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Passage 1．（2021•焦作二模）
When music cmes n， sme peple are te﹣lappers r head﹣bbbers， thers shake their hips，and then there are thse wh let the rhythm mve them t a full﹣bdy bgie （布吉舞）. But， whatever it is， the way we dance t a beat is s nticeable t an individual that a cmputer can nw identify us by ur unique dancing "fingerprint".
VResearchers at the Centre fr Interdisciplinary Music Research at Finland's University f Jyv skyl have been using mtin capture（动作捕捉） technlgy t study what a persn 's dance mves say abut his r her md， persnality， and ability t sympathize. They recently made an accidental discvery while trying t see if an ML machine， a frm f artificial intelligence， wuld be able t identify which kind f music was playing based n hw the participants f the study were dancing. In their study， the researchers mtin captured 73 participants with the AI technlgy while they danced t eight different music genres； electrnica， jazz， metal， pp， rap， reggae， cuntry， and blues. The nly instructin the dancers were given was t mve in a way that felt natural.
But what it culd d was mre shcking. The cmputer was able t crrectly identify which music ne f the participants was dancing t 94 percent f the time， regardless f what kind f music was playing， based n the pattern f a persn's dance style. It was the mvement f participants' heads， shulders and knees that were imprtant markers in distinguishing between individual. "It seems as thugh a persn's dance mvements a kind f fingerprint. Each persn has a unique mvement signature that stays the same n matter what kind f music is playing，" said Pasi Saari， a c﹣authr f the study， in a class.
It's pssible that dance﹣recgnitin sftware culd becme smething similar t face﹣recgnitin sftware it desn't seem as practical. Fr nw， researchers say that they are nt as interested in pssible surveillance （监视） uses f this technlgy， but rather what the results f this study say abut hw humans respnd t music. S dn't wrry abut being identified at nightclub by an AI via yur signature dance mves yet.
（1）What did the researchers expect t d with the ML machine？
A. Test the dancers' flexibility. B. Make dancers accustmed t the beat.
C. Identify the music using dancers' mves. D. Check the accuracy f mtin capture technlgy.
（2）What might nt help the AI technlgy determine a dancer's identity？
A. Head mvement. B. Ft mvement. C. Knee mvement. D. Shulder mvement.
（3）What d researchers want t use the results fr？
A. Putting it n the applicatin market. B. Prgramming it t wrk at nightclub.
C. Learning abut the human respnse t music. D. Develping a sftware like face﹣recgnitin.
（4）What can be the best title f the text？
A. A music style matters less than its beat.
B. New AI can generate yur next dance mve.
C. A dance﹣recgnitin sftware will becme mre ppular.
D. New AI can identify yu by yur dancing "fingerprint".
Passage 2．（2021•焦作二模）
Many wildflwers f spring in eastern Nrth America blm thanks t ants. The tiny six﹣legged gardeners have partnered with thse plants and abut 11， 000 thers t spread their seeds. The plants，in turn， "pay" fr the service by attaching a calrie﹣laded appendage （附属物） t each seed， much like fleshy fruits remunerate birds and mammals that desert seeds r pp （排泄） them ut. But there's mre t the ant﹣seed relatinship than that exchange， researchers reprted last week at the annual meeting f the Eclgical Sciety f America， which was held nline.
Many ants eat seeds. Certain plants attach a nutritive glbe called an elaisme t their seed cats， which serves as a favrite lunch fr the ants' yung and gives ants a handle n seeds that can be bigger than their heads. Until nw， researchers assumed the ants simply carry the seeds t their nests， feed the elaisme t their yung， and depsit the seed either utside r inside at the clny's "garbage dump"， which prvides a rich envirnment fr shting.
In bth the field and the lab， Chelsea Miller presented ants with seeds frm varius trillium （延龄花） species and fund the ants were quick t pick up sme species' seeds while leaving thers t rt， Miller said. T find ut hw ants make their chices， Miller and Susan Whitehead at the Virginia Plytechnic Institute and State University （Virginia Tech） used techniques t analyze the chemical makeup f elaismes. They fund that ants pick seeds based n the specific cmbinatin and cncentratins f acid and ther cmpunds （化合物） made by the plant， 20 f which are unique t trilliums. The ants' tastes may affect plant species' distributins， say Kirsten Prir， an eclgist at Binghamtn University： "Widespread trillium species are preferred by seed﹣dispersing ants cmpared t rare trillium species."
Melissa Burt， an eclgist at Virginia Tech， hpes these studies bring ants new respect. "Many peple that a I talk t abut ants nly knw them as insects that are taking ver their kitchens， but many ants perfrm imprtant functins in ecsystems，" she says. "Seed dispersal is just ne f thse."
（1）What des the underlined wrd "remunerate" prbably mean？
A. Attract. B. Track. C. Free. D. Reward.
（2）What des the text say abut elaisme in paragraph 2？
A. It's a tasty treat fr yung ants. B. It's n smaller than ants' heads.
C. It is used as yung ants' new nest. D. It can be used as a weapn t prtect ants.
（3）Why did Miller and his team figure ut the chemicals f sme seeds？
A. T analyze the specific cmbinatin affecting the plant grwth.
B. T find ut the reasn fr ants preferring sme seeds t thers.
C. T prve the accuracy f their lab techniques applied in the field.
D. T understand the way f ants distributing different plant species' seeds.
（4）What d mst peple think f ants accrding t Melissa？
A. Annying. B. Greedy. C. Creative. D. Hardwrking.
Passage 3．（2021•宜昌模拟）
"I dn't want t sigh when I get an invitatin in the mail， but I can't help it，" Susan， aged 30， tells us. "I want t g， but hw d I explain I can't？" Weddings are suppsed t be abut fun and tgetherness ﹣ a time t get tgether and celebrate a huge life milestne.
Hwever， mre and mre， they've becme a surce f tensin and distance. When wedding seasn appraches and anther wave f wedding invites start t rll in， many millennials （千禧年一代） are facing an uncmfrtable truth ﹣ they're just t expensive.
Because it's nt just the wedding. It's the engagement party， the gifts and the airfare in the middle f high seasn t a destinatin wedding. The average bachelr party nw csts an eye﹣watering ＄1，532 and the average bachelrette （单身女郎） party isn't far behind at ＄1，106， and that's befre we even get t the wedding， which， by the way， csts the average guest ＄1，386. It desn't matter hw many times the thrifty amng us can restyle the same ld jumpsuit because the mney yu're saving isn't ging t tuch yur Air BNB bill.
It's n surprise that mre peple are saying n t wedding invitatins because f the cst. And wh can blame them？ It's hard t see anther slutin. It's natural t want everyne yu care abut t be at yur wedding， but it's als understandable if yu can't affrd t fly t three different weddings during six weeks.
The wedding machinery shws n signs f slwing dwn， s all we can d is have a little mre sympathy. If yu're thrwing a wedding， try t be sensitive abut the cst and understanding when smene just can't make it. We have t create mre scially acceptable ways f celebrating a marriage withut spending a mnth's salary t be there t celebrate the big day. It really shuld be the thught that cunts.
（1）What des the underlined part in Paragraph 3 mst prbably mean？
A. The average bachelr. B. The expensive wedding. C. The ecnmical peple. D. The saved mney.
（2）Why d mst peple want t decline the wedding invitatins？
A. The weddings are t cstly t attend. B. They dn't care abut the wedding.
C. They dn't have enugh time t g. D. The weddings are ften disappinting.
（3）Accrding t the passage， what idea may the authr agree with？
A. Peple shuld spend a mnth's salary t prepare a gift.
B. When thrwing a wedding， peple shuld be thughtful.
C. A luxurius wedding cntributes t a gd marriage.
D. Wedding invitatins shuld g unnticed.
（4）Which culd be the best title f this passage？
A. Weddings are abut fun and tgetherness. B. It is an art t say n t wedding invitatins.
C. Millennials are facing mre and mre tensin. D. Wedding invitatins bring jy and burden t Millennials.
Passage 4．（2021•龙岗区模拟）
Traditinal Chinese Medicine（TCM）， alng with Chinese Kungfu and Peking Opera， is ne f China's cultural symbls recgnized wrldwide. It is a gem f Chinese civilizatin， and it has als made great cntributins t wrld civilizatin by imprving peple's health and prmting scial prgress.
There used t be a debate in China abut whether TCM r Western medicine was better，and arguments can still be heard tday. But actually， TCM and western medicine are tw different medical theretical systems that can nt replace each ther. In sme aspects such as surgery， Western medicine is better than TCM，but in ther areas， such as recvery after surgery and treatment f chrnic（慢性的） diseases， TCM is mre effective. This is way sme Chinese hspitals prvide bth TCM and Western medicine treatments. A cmbinatin f bth has been accepted by many Chinese peple as the mst effective treatment.
Tday， prmting and innvating TCM has becme a cnsensus （共识） in Chinese sciety.The Chinese gvernment has frmulated plicies t supprt the develpment and innvatin f TCM， with a view t establishing a Chinese healthcare develpment mdel paying equal attentin t bth.
The supprtive plicies f the Chinese Gvernment will fcus n three aspects. The first is the strengthening f TCM services in medical institutins. The secnd is t apply Internet technlgy t TCM management，including setting up a database cntaining TCM electrnic medical recrds and prescriptins （处方） . The third is t give better play t the advantages f TCM， especially acupuncture （针灸） and naprapathy（推拿）. The functin f TCM in disease preventin and recvery will als be enhanced.
As lng as TCM keeps its cre strengths and respects the rules f develpment and innvatin， it will surely be able t maintain its vitality and bring mre benefits t peple in China and the wrld.
（1）What advantage des Western medicine have ver TCM？
A.It is a symbl f natinal civilizatin. B.It is mre effective in surgery.
C.It is mre successful in recvery after surgery. D.It is mre effective in treating chrnic diseases.
（2）What is the characteristic f the Chinese healthcare develpment mdel？
A.It stresses the imprtance f Western medicine.
B.It attaches equal attentin t TCM and Western medicine.
C.It has been established by the Chinese gvernment.
D.It pays equal attentin t develping and innvating TCM.
（3）Accrding t paragraph 4， which f the fllwing aspects is nt included in the Chinese gvernment supprts fr TCM？
A.It makes better use f the advantages f TCM. B.It cmbines Internet Technlgy with TCM.
C.It calls n the public t supprt TCM. D.It increases TCM services in hspitals and medical centers.
（4）What can be a suitable title fr the text？
A.TCM Breaks New Grund. B.Chinese Gvernment Prmtes TCM.
C.TCM is One f China's Cultural Symbls. D.TCM Beats Western Medicine.
Passage 5．（2021•莆田模拟）
A new clr changing ink culd aid in health and envirnment mnitring fr example，allwing clthing t switch clrs when expsed t sweat r a wlen blanket t shift clrs if a dangerus gas enters the rm. The ink culd be printed n anything frm a T﹣shirt t a tent.
Wearable sensing devices like smart watches use electrnics just t mnitr heart rate， bld sugar，and mre. Nw researchers at Tufts University's Silklab say the new silk﹣based ink can respnd t，and quantify the presence f chemicals n r arund the bdy."Silk has the ability t add necessary sensing and clr changing chemical substances t the ink withut lsing their functins." says Firenz Omenett，a bimedical engineer at Silklab.
The researchers imprved n an earlier repetitin that wrked with inkjet printers， thickening the ink with a chemical t make it capable fr screen printing，and then added varius reactive substances. With the new ink， they can nw easily print a large number f reactive elements nt large surfaces.
The team made the ink by breaking dwn raw silk fibers int prteins，which the researchers suspended in water. Next they mixed in varius reactive mlecules （分子） and analyzed hw the resulting prducts changed hues when expsed t changes in their envirnment. When printed n fabric，pH indicatrs， fr example，culd cnvey infrmatin abut skin health and a wearer's tiredness levels. The changes are visible t eyes，but the researchers als used a camera﹣imaging analysis t cntinuusly mnitr the clr variatins and create a database f values.
Omenett says that the ink culd be adapted t track envirnmental changes in a rm， r t respnd t bacteria and fllw disease prgressin.
Mechanical engineer Tyler Ray f Hawaii University ntes that mst f tday's wearable mnitrs are rigid， fairly large and heavy. "The new ink technlgy has the ptential t transfrm cnsumer wearable mnitrs frm entertainment devices int bdy wrn， clinical grade physilgical measurement tls prviding useful infrmatin and making it easier fr physicians t perate." he says.
（1）What can the new ink be used fr？
A. Making pictures. B. Printing dcuments.
C. Breaking dwn fibers and prteins. D. Detecting health and envirnment changes.
（2）What des Firenz Omenett mentin in paragraph 2？
A. The chemical substances in silk. B. The practical functins f smart watches.
C. The rle f silk in the new ink technlgy. D. The influence f the new ink n the human bdy.
（3）What des the underlined wrd "hues" in paragraph 4 prbably mean？
A. Levels. B. Clrs. C. Wearers. D. Analysis.
（4）Hw des Tyler Ray expect f the wearable mnitrs using the new ink？
A. Practical. B. Sft. C. Large and heavy. D. Small but incnvenient.
Passage 6．（2021•重庆模拟）
The fashin industry urgently needs t transitin t a "slw" fashin mdel t reduce its heavy envirnmental damage， accrding t researchers at Aalt University， Finland.
The envirnmental impact f fashin's glbal supply chain cntinues t rise， they say in a paper published in the jurnal Nature. The industry currently prduces ver 92 millin tns f waste and cnsumes 79 trillin liters f water per year. It causes arund 10 percent f the wrld's greenhuse gas emissins （排放） and is als a high surce chemical pllutin. Develping cuntries tend t suffer mst frm the industry， since prductin ften ccurs there.
The fashin industry is als prjected t grw significantly in the cming decades. Fashin brands are already prducing almst twice the amunt f clthing they did 20 years ag， while glbal cnsumptin f textiles （纺织品） is prjected t increase by ver 60 percent t 102 millin tns by 2030， the paper said.
"It's critical that we， as cnsumers， accept that these cheap clthes are nt pssible if the envirnmental impacts are really all taken care f，" said Dr. Kirsi Niinimaiki. "In the future we shuld prduce less. If we buy less， there will be less waste."
Peple in the UK buy mre clthes per persn than any ther cuntry in Eurpe. Last year， a crss﹣party parliamentary cmmittee in the UK called n the gvernment t add a 1 penny "prducer respnsibility charge" n each item f clthing t pay fr better cllectin and recycling f unwanted clthes.
Dr. Mark Sumner， a lecturer in sustainability in retail and fashin at the University f Leeds， said that the paper gave a gd verview f the material aspects f the industry， but missed the pprtunity t highlight effrts by mre respnsible brands t address these envirnmental prblems.
"There are definitely success stries ut there in terms f what industry has dne，" said Sumner， adding that nt enugh brands are using that best practice. He als said it's imprtant nt t see "slw" fashin as the nly answer.
（1）What is ne f the majr cncerns abut the fast fashin industry？
A. Emissin f greenhuse gases. B. Waste f clthing materials.
C. A sharp increase in diseases. D. A fierce cmpetitin in fashin.
（2）What is the purpse f paragraph 5？
A. T supprt the idea f less clthing prductin. B. T illustrate hw fast fashin industry develps.
C. T prve that British peple buy mre clthes. D. T shw a measure t reduce clthes purchase.
（3）What d Dr. Mark Sumner's wrds imply？
A. "Slw" fashin is a must. B. Cnsumers shuld buy less.
C. A new apprach is needed. D. Industry has dne well enugh.
（4）What des the text mainly talk abut？
A. Future f the fashin industry. B. Needs t deal with fast fashin.
C. Reductin f clthing prductin. D. Changes t sustainability in fashin.
Passage 7．（2021•肇庆一模）
Fr many students tday， distance learning has becme the new nrmal. But distance learning means lts f screen time.
Research has shwn that kids wh spend a lt f time n screens are mre likely t have varius health prblems and truble with reading and language. Yet in the cuntries still suffering frm the epidemic （流行病），screens are the nly safe way fr many yung peple t learn r scialize. It's difficult fr kids and teens t navigate this dilemma.
In ne 2019 study， Taren Sanders， a health scientist at Australian Cathlic University in Nrth Sydney， lked at hw kids spent their screen time. His grup then investigated whether the type f screen time made a difference in health and schl achievements. The researchers srted screen time int five types： passive （such as watching a mvie） ， interactive （such as playing a vide game）， scial， educatinal r smething else.
Educatinal screen time was linked t ding better in schl and had n bad health effects. Mre passive screen time was linked t wrse utcmes in health and schl achievements， Sanders' grup fund， cmpared with the ther categries. But the impact was quite small. Majr prblems shwed up mainly in kids spending mre than eight hurs a day n screens.
The mst serius prblem caused by t much screen time is that peple usually sit still while they are in frnt f a screen. "If students are spending all day sitting n screens， when are they mving？" asks Guerrer， wh studies patterns f diseases. "Extended time sitting and nt mving arund leads t besity， diabetes， heart disease and ther health issues. S an imprtant questin t ask yurself is nt hw much screen time are yu getting， but hw active are yu？"
Sanders agrees. "Overall， I'm nt t cncerned abut the additinal screen time kids are having because f distance learning，" he says. "The things yu shuld wrry abut： The amunt f exercise they get and the way they spend their free time. "
（1）What des the underlined wrd "navigate" in Paragraph 2 mean？
A. Handle. B. Assume. C. Observe. D. Seize.
（2）What des the 2019 study find？
A. There are mainly five types f screen time. B. Educatinal screen time damages kids' health.
C. Passive screen time has a majr influence n kids. D. T much screen time is the majr cause f prblems.
（3）What des Guerrer cncern mst？
A. The prblem f lacking exercise. B. Kids way f spending their free time.
C. The number f diseases related t screen time. D. Distance learning causes additinal screen time.
（4）What is the purpse f the text？
A. T guide parents t educate their kids. B. T explain the finding f a new study.
C. T discuss the influence f screen time. D. T analyse the effect f distance learning.
Passage 8．（2021•佛山一模）
Mving can be daunting ﹣ whether it's t a new city r an entirely new cuntry. The gd news？ Vlunteering can be a great way t settle int a new cmmunity， meet peple， and learn valuable skills.
Kajal Patil mved t the United States frm India in February 2017. Having previusly vlunteered fr tw years as an assistant yga teacher in her hme cuntry， Kajal was enthusiastic abut vlunteering and began lking fr vlunteer pprtunities that match her interests. She was drawn t a vlunteer pprtunity t review applicatins n behalf f the Yung Leaders f the Americas Initiative （YLAI）， which aims t help Latin American and Caribbean business t bring psitive changes t their scieties and cntribute mre fully t ecnmic develpment， prsperity and security in thse places.
After cnnecting with the pprtunity and successfully cmpleting the applicatin prcess， Kajal gt t wrk. Her rle invlved reviewing 44 in﹣depth applicatins frm ptential candidates acrss Latin America and the Caribbean fr a fur﹣week fellwship in the U.S. She was respnsible fr describing the business ideas presented by these candidates， assessing the scial impact f their businesses， and determining the strength f candidates t carry ut their plans. With almst 4，000 applicants in 2017，vlunteers like Kajal were imprtant members f the YLAI team.
Kajal says that this vlunteer pprtunity super﹣charged her existing skills，while helping her build new nes such as time management， business analysis， decisin﹣making， planning， and presenting.
She is nw lking fr her next vlunteer pprtunity and reflects psitively n her experience with YLAI. "A new cuntry brings in a lt f new experiences and vlunteering helped me t settle int a new envirnment，" adds Kajal. "By helping thers， I felt needed in sciety. It prmted my cnfidence， and ther peple benefited t. Vlunteering is a great pprtunity t imprve yurself， thers， and the whle sciety."
Whether yu recently mved t a new place r are lking t expand yur influence n yur current cmmunity， find a vlunteer pprtunity t empwer yurself， and thers.
（1）What d we knw abut Kajal？
A.She is an experienced vlunteer. B.She received educatin in the U.S.
C.She funded a vlunteer rganizatin. D.She wrked as a prfessinal yga teacher.
（2）What was included in Kajal's vluntary wrk fr YLAI？
A.Carrying ut the selected business plans. B.Assessing the applicatins f candidates.
C.Helping candidates think up business ideas. D.Simplifying candidates' applicatin prcess.
（3）What des Kajal think f vlunteering？
A.It cntributes t lcal ecnmy. B.It fcuses n skills develpment.
C.It helps develp peple's interests. D.It benefits individuals and sciety.
（4）What is the purpse f this text？
A.T share experience f vlunteering. B.T recgnize the cntributin f YLAI.
C.T suggest a way t settle int a new place. D.T evaluate the benefits f vlunteering abrad.
Passage 9．（2021•莆田模拟）
Swimming in water temperatures f 41 degrees F and belw，with air temperatures between 6.8 degrees F and ﹣4 degrees F，wearing just a swimsuit，a cap， and a pair f glasses，may sund flish t sme. But that is precisely what 400 athletes frm 33 cuntries had t bear in the Internatinal Swimming Champinships，held in Murmansk， Russia.
Organized by the Internatinal Ice Swimming Assciatin （IISA），the event was held in a 25﹣meter lng swimming pl created by carving ut slabs （平板） f the 2﹣ft thick surface layer f ice n Lake Semynvakaya with chain saws （锯子）.
Each event als has a strict time limit. Due t the danger f the lw bdy temperature，cmpetitrs wh are in the water must be pulled ut in time. Swimmers d nt dive in. Instead，they g int the water slwly using ladders. They must als stay flat in the water at all times and are frbidden t perfrm turns which culd endanger the rgans. Upn cmpleting their race. swimmers are quickly led t a recvery center. Once their bdy temperature stabilizes，they settle dwn fr a ht bath.
Jny Warneken said，"There are three reasns why a lt f us d this. There's the physical challenge f actually swimming in water that is belw five degrees. We lve being ut in nature. And the third thing is that the friendship amng the swimmers is fantastic."
Jade Perry said，"It's fantastic when I get in the cld water﹣﹣I'm just free. The mst imprtant is that I'm nt wrrying abut wrk，my huse，r anything like that in my life. I'm in the water，and I'm just thinking abut swimming."
Ice swimming is enjyed by a few brave suls. Hwever，Ram Barkai，the funder f IISA，is trying t cnvince Chinese fficials t include it as a cmpetitive event in the 2022 Winter Olympics in Beijing，China. While be even persuaded the decisin makers t cme t the Murmansk Champinships，there is n wrd yet n if he met with any success.
（1）What d we knw abut the swimming pl？
A. It is 2﹣feet﹣wide. B. It lies in an ice lake.
C. It is as deep as 25 meters. D. It serves as a recvery place fr patients.
（2）What shuld swimmers d in the cmpetitin？
A. Make sme turns in the water. B. Finish swimming at a fixed perid f time.
C. Dive int the water as quickly as pssible. D. Find a chance t get ut f the water fr a ht bath.
（3）What's the main pint f ice swimming fr Jade Perry？
A. The challenge f the physical bdy. B. The happiness f cnquering nature.
C. The jy f escaping frm the reality. D. The friendship with ther swimmers.
（4）What is Ram Barkai trying t d？
A. Invite sme brave swimmers t Murmansk. B. Make swimming becme a mre cmpetitive sprt.
C. Persuade Chinese swimmers t jin the cmpetitin.D. Have ice swimming included in the Winter Olympics.
Passage 10．（2021•佛山一模）
Scial distancing is nt a new cncept in the natural wrld， where infectius diseases are cmmnplace. Thrugh specialized senses animals can detect certain diseases and change their behavir t avid getting ill.
In 1966， while studying chimps （猩猩） in a Tanzanian natinal park， zlgist Jane Gdall bserved a chimp named McGregr wh had caught a highly infectius virus. His fellw chimps attacked him and threw him ut f the trp. In ne instance， McGregr apprached chimps in a tree. He reached ut a hand in greeting， but the thers mved away withut a backward glance.
"Fr a full tw minutes， ld McGregr sat mtinless， staring after them，" Gdall ntes in her 1971 bk In the Shadw f Man. "It's really nt that different t hw sme scieties react tday t such a tragedy."
Nt all animals are s aggressive tward their ailing neighbrs. Smetimes it's as simple as aviding thse wh may infect yu.
When Kiesecker， a lead scientist in America， studied American bullfrg in the late 1990s， he fund that bullfrgs culd nt nly detect a deadly smell f infectin in ther bullfrgs， but healthy members actively avided thse that were sick. Bullfrgs rely n chemicals signals t determine wh is sick r nt.
Caribbean lbsters als shun diseased members f their cmmunity， well befre they becme infectius. It takes abut eight weeks fr lbsters infected with the deadly virus Panulirus argus mininucevirus t becme dangerus t thers. Nrmally scial animals， lbsters begin keeping away frm the diseased as early as fur weeks after infectin ﹣ nce the lbsters can smell certain chemicals released by sick individuals.
Overall， it's imprtant t nte that， unlike us， animals dn't realize if they stay hme， they might actually reduce the infectin rate，" Kiesecker explains. "As humans， we have that ability. It's a big difference."
（1）What can we learn abut the chimps frm Gdall's bservatin？
A.They kept a distance frm ne anther. B.They became aggressive when infected.
C.The infected avided cntact with thers. D.The infected were frced t leave the grup.
（2）What des the underlined wrd "shun" in Paragraph 6 prbably mean？
A.Avid. B.Cure. C.Get rid f. D.Get alng with.
（3）Hw are humans different frm animals accrding t Kiesecker？
A.Humans are mre sensitive t virus. B.Humans are less likely t get infected.
C.Humans treat infectius diseases in a wiser way. D.Humans can detect chemical signals mre quickly.
（4）Which might be the best title fr the text？
A.Help Me Out B.Leave Me Alne C.Stay Away Frm Us D.Stay Hme Stay Healthy
Passage 1．（2021•焦作二模）
When music cmes n， sme peple are te﹣lappers r head﹣bbbers， thers shake their hips，and then there are thse wh let the rhythm mve them t a full﹣bdy bgie （布吉舞）. But， whatever it is， the way we dance t a beat is s nticeable t an individual that a cmputer can nw identify us by ur unique dancing "fingerprint".
VResearchers at the Centre fr Interdisciplinary Music Research at Finland's University f Jyv skyl have been using mtin capture（动作捕捉） technlgy t study what a persn 's dance mves say abut his r her md， persnality， and ability t sympathize. They recently made an accidental discvery while trying t see if an ML machine， a frm f artificial intelligence， wuld be able t identify which kind f music was playing based n hw the participants f the study were dancing. In their study， the researchers mtin captured 73 participants with the AI technlgy while they danced t eight different music genres； electrnica， jazz， metal， pp， rap， reggae， cuntry， and blues. The nly instructin the dancers were given was t mve in a way that felt natural.
But what it culd d was mre shcking. The cmputer was able t crrectly identify which music ne f the participants was dancing t 94 percent f the time， regardless f what kind f music was playing， based n the pattern f a persn's dance style. It was the mvement f participants' heads， shulders and knees that were imprtant markers in distinguishing between individual. "It seems as thugh a persn's dance mvements a kind f fingerprint. Each persn has a unique mvement signature that stays the same n matter what kind f music is playing，" said Pasi Saari， a c﹣authr f the study， in a class.
It's pssible that dance﹣recgnitin sftware culd becme smething similar t face﹣recgnitin sftware it desn't seem as practical. Fr nw， researchers say that they are nt as interested in pssible surveillance （监视） uses f this technlgy， but rather what the results f this study say abut hw humans respnd t music. S dn't wrry abut being identified at nightclub by an AI via yur signature dance mves yet.
（1）What did the researchers expect t d with the ML machine？
A. Test the dancers' flexibility. B. Make dancers accustmed t the beat.
C. Identify the music using dancers' mves. D. Check the accuracy f mtin capture technlgy.
（2）What might nt help the AI technlgy determine a dancer's identity？
A. Head mvement. B. Ft mvement. C. Knee mvement. D. Shulder mvement.
（3）What d researchers want t use the results fr？
A. Putting it n the applicatin market. B. Prgramming it t wrk at nightclub.
C. Learning abut the human respnse t music. D. Develping a sftware like face﹣recgnitin.
（4）What can be the best title f the text？
A. A music style matters less than its beat.
B. New AI can generate yur next dance mve.
C. A dance﹣recgnitin sftware will becme mre ppular.
D. New AI can identify yu by yur dancing "fingerprint".
Passage 2．（2021•焦作二模）
Many wildflwers f spring in eastern Nrth America blm thanks t ants. The tiny six﹣legged gardeners have partnered with thse plants and abut 11， 000 thers t spread their seeds. The plants，in turn， "pay" fr the service by attaching a calrie﹣laded appendage （附属物） t each seed， much like fleshy fruits remunerate birds and mammals that desert seeds r pp （排泄） them ut. But there's mre t the ant﹣seed relatinship than that exchange， researchers reprted last week at the annual meeting f the Eclgical Sciety f America， which was held nline.
Many ants eat seeds. Certain plants attach a nutritive glbe called an elaisme t their seed cats， which serves as a favrite lunch fr the ants' yung and gives ants a handle n seeds that can be bigger than their heads. Until nw， researchers assumed the ants simply carry the seeds t their nests， feed the elaisme t their yung， and depsit the seed either utside r inside at the clny's "garbage dump"， which prvides a rich envirnment fr shting.
In bth the field and the lab， Chelsea Miller presented ants with seeds frm varius trillium （延龄花） species and fund the ants were quick t pick up sme species' seeds while leaving thers t rt， Miller said. T find ut hw ants make their chices， Miller and Susan Whitehead at the Virginia Plytechnic Institute and State University （Virginia Tech） used techniques t analyze the chemical makeup f elaismes. They fund that ants pick seeds based n the specific cmbinatin and cncentratins f acid and ther cmpunds （化合物） made by the plant， 20 f which are unique t trilliums. The ants' tastes may affect plant species' distributins， say Kirsten Prir， an eclgist at Binghamtn University： "Widespread trillium species are preferred by seed﹣dispersing ants cmpared t rare trillium species."
Melissa Burt， an eclgist at Virginia Tech， hpes these studies bring ants new respect. "Many peple that a I talk t abut ants nly knw them as insects that are taking ver their kitchens， but many ants perfrm imprtant functins in ecsystems，" she says. "Seed dispersal is just ne f thse."
（1）What des the underlined wrd "remunerate" prbably mean？
A. Attract. B. Track. C. Free. D. Reward.
（2）What des the text say abut elaisme in paragraph 2？
A. It's a tasty treat fr yung ants. B. It's n smaller than ants' heads.
C. It is used as yung ants' new nest. D. It can be used as a weapn t prtect ants.
（3）Why did Miller and his team figure ut the chemicals f sme seeds？
A. T analyze the specific cmbinatin affecting the plant grwth.
B. T find ut the reasn fr ants preferring sme seeds t thers.
C. T prve the accuracy f their lab techniques applied in the field.
D. T understand the way f ants distributing different plant species' seeds.
（4）What d mst peple think f ants accrding t Melissa？
A. Annying. B. Greedy. C. Creative. D. Hardwrking.
Passage 3．（2021•宜昌模拟）
"I dn't want t sigh when I get an invitatin in the mail， but I can't help it，" Susan， aged 30， tells us. "I want t g， but hw d I explain I can't？" Weddings are suppsed t be abut fun and tgetherness ﹣ a time t get tgether and celebrate a huge life milestne.
Hwever， mre and mre， they've becme a surce f tensin and distance. When wedding seasn appraches and anther wave f wedding invites start t rll in， many millennials （千禧年一代） are facing an uncmfrtable truth ﹣ they're just t expensive.
Because it's nt just the wedding. It's the engagement party， the gifts and the airfare in the middle f high seasn t a destinatin wedding. The average bachelr party nw csts an eye﹣watering ＄1，532 and the average bachelrette （单身女郎） party isn't far behind at ＄1，106， and that's befre we even get t the wedding， which， by the way， csts the average guest ＄1，386. It desn't matter hw many times the thrifty amng us can restyle the same ld jumpsuit because the mney yu're saving isn't ging t tuch yur Air BNB bill.
It's n surprise that mre peple are saying n t wedding invitatins because f the cst. And wh can blame them？ It's hard t see anther slutin. It's natural t want everyne yu care abut t be at yur wedding， but it's als understandable if yu can't affrd t fly t three different weddings during six weeks.
The wedding machinery shws n signs f slwing dwn， s all we can d is have a little mre sympathy. If yu're thrwing a wedding， try t be sensitive abut the cst and understanding when smene just can't make it. We have t create mre scially acceptable ways f celebrating a marriage withut spending a mnth's salary t be there t celebrate the big day. It really shuld be the thught that cunts.
（1）What des the underlined part in Paragraph 3 mst prbably mean？
A. The average bachelr. B. The expensive wedding. C. The ecnmical peple. D. The saved mney.
（2）Why d mst peple want t decline the wedding invitatins？
A. The weddings are t cstly t attend. B. They dn't care abut the wedding.
C. They dn't have enugh time t g. D. The weddings are ften disappinting.
（3）Accrding t the passage， what idea may the authr agree with？
A. Peple shuld spend a mnth's salary t prepare a gift.
B. When thrwing a wedding， peple shuld be thughtful.
C. A luxurius wedding cntributes t a gd marriage.
D. Wedding invitatins shuld g unnticed.
（4）Which culd be the best title f this passage？
A. Weddings are abut fun and tgetherness. B. It is an art t say n t wedding invitatins.
C. Millennials are facing mre and mre tensin. D. Wedding invitatins bring jy and burden t Millennials.
Passage 4．（2021•龙岗区模拟）
Traditinal Chinese Medicine（TCM）， alng with Chinese Kungfu and Peking Opera， is ne f China's cultural symbls recgnized wrldwide. It is a gem f Chinese civilizatin， and it has als made great cntributins t wrld civilizatin by imprving peple's health and prmting scial prgress.
There used t be a debate in China abut whether TCM r Western medicine was better，and arguments can still be heard tday. But actually， TCM and western medicine are tw different medical theretical systems that can nt replace each ther. In sme aspects such as surgery， Western medicine is better than TCM，but in ther areas， such as recvery after surgery and treatment f chrnic（慢性的） diseases， TCM is mre effective. This is way sme Chinese hspitals prvide bth TCM and Western medicine treatments. A cmbinatin f bth has been accepted by many Chinese peple as the mst effective treatment.
Tday， prmting and innvating TCM has becme a cnsensus （共识） in Chinese sciety.The Chinese gvernment has frmulated plicies t supprt the develpment and innvatin f TCM， with a view t establishing a Chinese healthcare develpment mdel paying equal attentin t bth.
The supprtive plicies f the Chinese Gvernment will fcus n three aspects. The first is the strengthening f TCM services in medical institutins. The secnd is t apply Internet technlgy t TCM management，including setting up a database cntaining TCM electrnic medical recrds and prescriptins （处方） . The third is t give better play t the advantages f TCM， especially acupuncture （针灸） and naprapathy（推拿）. The functin f TCM in disease preventin and recvery will als be enhanced.
As lng as TCM keeps its cre strengths and respects the rules f develpment and innvatin， it will surely be able t maintain its vitality and bring mre benefits t peple in China and the wrld.
（1）What advantage des Western medicine have ver TCM？
A.It is a symbl f natinal civilizatin. B.It is mre effective in surgery.
C.It is mre successful in recvery after surgery. D.It is mre effective in treating chrnic diseases.
（2）What is the characteristic f the Chinese healthcare develpment mdel？
A.It stresses the imprtance f Western medicine.
B.It attaches equal attentin t TCM and Western medicine.
C.It has been established by the Chinese gvernment.
D.It pays equal attentin t develping and innvating TCM.
（3）Accrding t paragraph 4， which f the fllwing aspects is nt included in the Chinese gvernment supprts fr TCM？
A.It makes better use f the advantages f TCM. B.It cmbines Internet Technlgy with TCM.
C.It calls n the public t supprt TCM. D.It increases TCM services in hspitals and medical centers.
（4）What can be a suitable title fr the text？
A.TCM Breaks New Grund. B.Chinese Gvernment Prmtes TCM.
C.TCM is One f China's Cultural Symbls. D.TCM Beats Western Medicine.
Passage 5．（2021•莆田模拟）
A new clr changing ink culd aid in health and envirnment mnitring fr example，allwing clthing t switch clrs when expsed t sweat r a wlen blanket t shift clrs if a dangerus gas enters the rm. The ink culd be printed n anything frm a T﹣shirt t a tent.
Wearable sensing devices like smart watches use electrnics just t mnitr heart rate， bld sugar，and mre. Nw researchers at Tufts University's Silklab say the new silk﹣based ink can respnd t，and quantify the presence f chemicals n r arund the bdy."Silk has the ability t add necessary sensing and clr changing chemical substances t the ink withut lsing their functins." says Firenz Omenett，a bimedical engineer at Silklab.
The researchers imprved n an earlier repetitin that wrked with inkjet printers， thickening the ink with a chemical t make it capable fr screen printing，and then added varius reactive substances. With the new ink， they can nw easily print a large number f reactive elements nt large surfaces.
The team made the ink by breaking dwn raw silk fibers int prteins，which the researchers suspended in water. Next they mixed in varius reactive mlecules （分子） and analyzed hw the resulting prducts changed hues when expsed t changes in their envirnment. When printed n fabric，pH indicatrs， fr example，culd cnvey infrmatin abut skin health and a wearer's tiredness levels. The changes are visible t eyes，but the researchers als used a camera﹣imaging analysis t cntinuusly mnitr the clr variatins and create a database f values.
Omenett says that the ink culd be adapted t track envirnmental changes in a rm， r t respnd t bacteria and fllw disease prgressin.
Mechanical engineer Tyler Ray f Hawaii University ntes that mst f tday's wearable mnitrs are rigid， fairly large and heavy. "The new ink technlgy has the ptential t transfrm cnsumer wearable mnitrs frm entertainment devices int bdy wrn， clinical grade physilgical measurement tls prviding useful infrmatin and making it easier fr physicians t perate." he says.
（1）What can the new ink be used fr？
A. Making pictures. B. Printing dcuments.
C. Breaking dwn fibers and prteins. D. Detecting health and envirnment changes.
（2）What des Firenz Omenett mentin in paragraph 2？
A. The chemical substances in silk. B. The practical functins f smart watches.
C. The rle f silk in the new ink technlgy. D. The influence f the new ink n the human bdy.
（3）What des the underlined wrd "hues" in paragraph 4 prbably mean？
A. Levels. B. Clrs. C. Wearers. D. Analysis.
（4）Hw des Tyler Ray expect f the wearable mnitrs using the new ink？
A. Practical. B. Sft. C. Large and heavy. D. Small but incnvenient.
Passage 6．（2021•重庆模拟）
The fashin industry urgently needs t transitin t a "slw" fashin mdel t reduce its heavy envirnmental damage， accrding t researchers at Aalt University， Finland.
The envirnmental impact f fashin's glbal supply chain cntinues t rise， they say in a paper published in the jurnal Nature. The industry currently prduces ver 92 millin tns f waste and cnsumes 79 trillin liters f water per year. It causes arund 10 percent f the wrld's greenhuse gas emissins （排放） and is als a high surce chemical pllutin. Develping cuntries tend t suffer mst frm the industry， since prductin ften ccurs there.
The fashin industry is als prjected t grw significantly in the cming decades. Fashin brands are already prducing almst twice the amunt f clthing they did 20 years ag， while glbal cnsumptin f textiles （纺织品） is prjected t increase by ver 60 percent t 102 millin tns by 2030， the paper said.
"It's critical that we， as cnsumers， accept that these cheap clthes are nt pssible if the envirnmental impacts are really all taken care f，" said Dr. Kirsi Niinimaiki. "In the future we shuld prduce less. If we buy less， there will be less waste."
Peple in the UK buy mre clthes per persn than any ther cuntry in Eurpe. Last year， a crss﹣party parliamentary cmmittee in the UK called n the gvernment t add a 1 penny "prducer respnsibility charge" n each item f clthing t pay fr better cllectin and recycling f unwanted clthes.
Dr. Mark Sumner， a lecturer in sustainability in retail and fashin at the University f Leeds， said that the paper gave a gd verview f the material aspects f the industry， but missed the pprtunity t highlight effrts by mre respnsible brands t address these envirnmental prblems.
"There are definitely success stries ut there in terms f what industry has dne，" said Sumner， adding that nt enugh brands are using that best practice. He als said it's imprtant nt t see "slw" fashin as the nly answer.
（1）What is ne f the majr cncerns abut the fast fashin industry？
A. Emissin f greenhuse gases. B. Waste f clthing materials.
C. A sharp increase in diseases. D. A fierce cmpetitin in fashin.
（2）What is the purpse f paragraph 5？
A. T supprt the idea f less clthing prductin. B. T illustrate hw fast fashin industry develps.
C. T prve that British peple buy mre clthes. D. T shw a measure t reduce clthes purchase.
（3）What d Dr. Mark Sumner's wrds imply？
A. "Slw" fashin is a must. B. Cnsumers shuld buy less.
C. A new apprach is needed. D. Industry has dne well enugh.
（4）What des the text mainly talk abut？
A. Future f the fashin industry. B. Needs t deal with fast fashin.
C. Reductin f clthing prductin. D. Changes t sustainability in fashin.
Passage 7．（2021•肇庆一模）
Fr many students tday， distance learning has becme the new nrmal. But distance learning means lts f screen time.
Research has shwn that kids wh spend a lt f time n screens are mre likely t have varius health prblems and truble with reading and language. Yet in the cuntries still suffering frm the epidemic （流行病），screens are the nly safe way fr many yung peple t learn r scialize. It's difficult fr kids and teens t navigate this dilemma.
In ne 2019 study， Taren Sanders， a health scientist at Australian Cathlic University in Nrth Sydney， lked at hw kids spent their screen time. His grup then investigated whether the type f screen time made a difference in health and schl achievements. The researchers srted screen time int five types： passive （such as watching a mvie） ， interactive （such as playing a vide game）， scial， educatinal r smething else.
Educatinal screen time was linked t ding better in schl and had n bad health effects. Mre passive screen time was linked t wrse utcmes in health and schl achievements， Sanders' grup fund， cmpared with the ther categries. But the impact was quite small. Majr prblems shwed up mainly in kids spending mre than eight hurs a day n screens.
The mst serius prblem caused by t much screen time is that peple usually sit still while they are in frnt f a screen. "If students are spending all day sitting n screens， when are they mving？" asks Guerrer， wh studies patterns f diseases. "Extended time sitting and nt mving arund leads t besity， diabetes， heart disease and ther health issues. S an imprtant questin t ask yurself is nt hw much screen time are yu getting， but hw active are yu？"
Sanders agrees. "Overall， I'm nt t cncerned abut the additinal screen time kids are having because f distance learning，" he says. "The things yu shuld wrry abut： The amunt f exercise they get and the way they spend their free time. "
（1）What des the underlined wrd "navigate" in Paragraph 2 mean？
A. Handle. B. Assume. C. Observe. D. Seize.
（2）What des the 2019 study find？
A. There are mainly five types f screen time. B. Educatinal screen time damages kids' health.
C. Passive screen time has a majr influence n kids. D. T much screen time is the majr cause f prblems.
（3）What des Guerrer cncern mst？
A. The prblem f lacking exercise. B. Kids way f spending their free time.
C. The number f diseases related t screen time. D. Distance learning causes additinal screen time.
（4）What is the purpse f the text？
A. T guide parents t educate their kids. B. T explain the finding f a new study.
C. T discuss the influence f screen time. D. T analyse the effect f distance learning.
Passage 8．（2021•佛山一模）
Mving can be daunting ﹣ whether it's t a new city r an entirely new cuntry. The gd news？ Vlunteering can be a great way t settle int a new cmmunity， meet peple， and learn valuable skills.
Kajal Patil mved t the United States frm India in February 2017. Having previusly vlunteered fr tw years as an assistant yga teacher in her hme cuntry， Kajal was enthusiastic abut vlunteering and began lking fr vlunteer pprtunities that match her interests. She was drawn t a vlunteer pprtunity t review applicatins n behalf f the Yung Leaders f the Americas Initiative （YLAI）， which aims t help Latin American and Caribbean business t bring psitive changes t their scieties and cntribute mre fully t ecnmic develpment， prsperity and security in thse places.
After cnnecting with the pprtunity and successfully cmpleting the applicatin prcess， Kajal gt t wrk. Her rle invlved reviewing 44 in﹣depth applicatins frm ptential candidates acrss Latin America and the Caribbean fr a fur﹣week fellwship in the U.S. She was respnsible fr describing the business ideas presented by these candidates， assessing the scial impact f their businesses， and determining the strength f candidates t carry ut their plans. With almst 4，000 applicants in 2017，vlunteers like Kajal were imprtant members f the YLAI team.
Kajal says that this vlunteer pprtunity super﹣charged her existing skills，while helping her build new nes such as time management， business analysis， decisin﹣making， planning， and presenting.
She is nw lking fr her next vlunteer pprtunity and reflects psitively n her experience with YLAI. "A new cuntry brings in a lt f new experiences and vlunteering helped me t settle int a new envirnment，" adds Kajal. "By helping thers， I felt needed in sciety. It prmted my cnfidence， and ther peple benefited t. Vlunteering is a great pprtunity t imprve yurself， thers， and the whle sciety."
Whether yu recently mved t a new place r are lking t expand yur influence n yur current cmmunity， find a vlunteer pprtunity t empwer yurself， and thers.
（1）What d we knw abut Kajal？
A.She is an experienced vlunteer. B.She received educatin in the U.S.
C.She funded a vlunteer rganizatin. D.She wrked as a prfessinal yga teacher.
（2）What was included in Kajal's vluntary wrk fr YLAI？
A.Carrying ut the selected business plans. B.Assessing the applicatins f candidates.
C.Helping candidates think up business ideas. D.Simplifying candidates' applicatin prcess.
（3）What des Kajal think f vlunteering？
A.It cntributes t lcal ecnmy. B.It fcuses n skills develpment.
C.It helps develp peple's interests. D.It benefits individuals and sciety.
（4）What is the purpse f this text？
A.T share experience f vlunteering. B.T recgnize the cntributin f YLAI.
C.T suggest a way t settle int a new place. D.T evaluate the benefits f vlunteering abrad.
Passage 9．（2021•莆田模拟）
Swimming in water temperatures f 41 degrees F and belw，with air temperatures between 6.8 degrees F and ﹣4 degrees F，wearing just a swimsuit，a cap， and a pair f glasses，may sund flish t sme. But that is precisely what 400 athletes frm 33 cuntries had t bear in the Internatinal Swimming Champinships，held in Murmansk， Russia.
Organized by the Internatinal Ice Swimming Assciatin （IISA），the event was held in a 25﹣meter lng swimming pl created by carving ut slabs （平板） f the 2﹣ft thick surface layer f ice n Lake Semynvakaya with chain saws （锯子）.
Each event als has a strict time limit. Due t the danger f the lw bdy temperature，cmpetitrs wh are in the water must be pulled ut in time. Swimmers d nt dive in. Instead，they g int the water slwly using ladders. They must als stay flat in the water at all times and are frbidden t perfrm turns which culd endanger the rgans. Upn cmpleting their race. swimmers are quickly led t a recvery center. Once their bdy temperature stabilizes，they settle dwn fr a ht bath.
Jny Warneken said，"There are three reasns why a lt f us d this. There's the physical challenge f actually swimming in water that is belw five degrees. We lve being ut in nature. And the third thing is that the friendship amng the swimmers is fantastic."
Jade Perry said，"It's fantastic when I get in the cld water﹣﹣I'm just free. The mst imprtant is that I'm nt wrrying abut wrk，my huse，r anything like that in my life. I'm in the water，and I'm just thinking abut swimming."
Ice swimming is enjyed by a few brave suls. Hwever，Ram Barkai，the funder f IISA，is trying t cnvince Chinese fficials t include it as a cmpetitive event in the 2022 Winter Olympics in Beijing，China. While be even persuaded the decisin makers t cme t the Murmansk Champinships，there is n wrd yet n if he met with any success.
（1）What d we knw abut the swimming pl？
A. It is 2﹣feet﹣wide. B. It lies in an ice lake.
C. It is as deep as 25 meters. D. It serves as a recvery place fr patients.
（2）What shuld swimmers d in the cmpetitin？
A. Make sme turns in the water. B. Finish swimming at a fixed perid f time.
C. Dive int the water as quickly as pssible. D. Find a chance t get ut f the water fr a ht bath.
（3）What's the main pint f ice swimming fr Jade Perry？
A. The challenge f the physical bdy. B. The happiness f cnquering nature.
C. The jy f escaping frm the reality. D. The friendship with ther swimmers.
（4）What is Ram Barkai trying t d？
A. Invite sme brave swimmers t Murmansk. B. Make swimming becme a mre cmpetitive sprt.
C. Persuade Chinese swimmers t jin the cmpetitin.D. Have ice swimming included in the Winter Olympics.
Passage 10．（2021•佛山一模）
Scial distancing is nt a new cncept in the natural wrld， where infectius diseases are cmmnplace. Thrugh specialized senses animals can detect certain diseases and change their behavir t avid getting ill.
In 1966， while studying chimps （猩猩） in a Tanzanian natinal park， zlgist Jane Gdall bserved a chimp named McGregr wh had caught a highly infectius virus. His fellw chimps attacked him and threw him ut f the trp. In ne instance， McGregr apprached chimps in a tree. He reached ut a hand in greeting， but the thers mved away withut a backward glance.
"Fr a full tw minutes， ld McGregr sat mtinless， staring after them，" Gdall ntes in her 1971 bk In the Shadw f Man. "It's really nt that different t hw sme scieties react tday t such a tragedy."
Nt all animals are s aggressive tward their ailing neighbrs. Smetimes it's as simple as aviding thse wh may infect yu.
When Kiesecker， a lead scientist in America， studied American bullfrg in the late 1990s， he fund that bullfrgs culd nt nly detect a deadly smell f infectin in ther bullfrgs， but healthy members actively avided thse that were sick. Bullfrgs rely n chemicals signals t determine wh is sick r nt.
Caribbean lbsters als shun diseased members f their cmmunity， well befre they becme infectius. It takes abut eight weeks fr lbsters infected with the deadly virus Panulirus argus mininucevirus t becme dangerus t thers. Nrmally scial animals， lbsters begin keeping away frm the diseased as early as fur weeks after infectin ﹣ nce the lbsters can smell certain chemicals released by sick individuals.
Overall， it's imprtant t nte that， unlike us， animals dn't realize if they stay hme， they might actually reduce the infectin rate，" Kiesecker explains. "As humans， we have that ability. It's a big difference."
（1）What can we learn abut the chimps frm Gdall's bservatin？
A.They kept a distance frm ne anther. B.They became aggressive when infected.
C.The infected avided cntact with thers. D.The infected were frced t leave the grup.
（2）What des the underlined wrd "shun" in Paragraph 6 prbably mean？
A.Avid. B.Cure. C.Get rid f. D.Get alng with.
（3）Hw are humans different frm animals accrding t Kiesecker？
A.Humans are mre sensitive t virus. B.Humans are less likely t get infected.
C.Humans treat infectius diseases in a wiser way. D.Humans can detect chemical signals mre quickly.
（4）Which might be the best title fr the text？
A.Help Me Out B.Leave Me Alne C.Stay Away Frm Us D.Stay Hme Stay Healthy
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