英语人教版 (新课标)Unit 4 Learning effectively随堂练习题

这是一份英语人教版 (新课标)Unit 4 Learning effectively随堂练习题，共4页。试卷主要包含了用适当的介词或副词填空，根据汉语提示写出相应的单词，完成句子， 阅读理解等内容，欢迎下载使用。

一、用适当的介词或副词填空
1.Jack is late again.It is typical him t keep thers waiting.
答案:f
2.The develpmental histry f the sciety tells us that man has evlved the ape.
答案:frm
3.Parents attach much imprtance educatin.They will d their best t give their children that priceless gift.
答案:t
4.The mn shines brightly,as if it gave light by itself.
答案:ff
二、根据汉语提示写出相应的单词
1.The meat will (腐烂)if it isn’t kept cl.
答案:rt
2.The (蝙蝠)is a flying mammal.
答案:bat
3.He had spent several hurs in the library turning ver thse (有霉味的)dcuments.
答案:musty
4.They have (附加)a number f cnditins t the agreement.
答案:attached
5.This painting is (有代表性的)f his early wrks.
答案:typical
6.The surgen is perfrming a (精细的)peratin.
答案:delicate
7.The man mved clser, (压低)his vice.
答案:lwering
8.Scientists think that birds prbably (进化)frm reptiles.
答案:evlved
9.It’s very (阴暗的)tday but I dn’t think it’ll rain.
答案:dull
三、完成句子
1.The ball game was (因为大雨而推迟).
答案:pstpned because f the heavy rain
2.The cmpany has (演变成)a majr chemical manufacturer.
答案:evlved int
3.There was a message (附在花上).
答案:attached t the flwers
4.The teacher (向学生们发放课本)wh ask fr them.
答案:gave ut textbks t the students
四、 阅读理解
A
A rainfrest is an area cvered by tall trees with the ttal high rainfall spreading quite equally thrugh the year and the temperature rarely dipping belw 16℃.Rainfrests have a great effect n the wrld envirnment because they can take in heat frm the sun and adjust the climate.Withut the frest cver,these areas wuld reflect mre heat int the atmsphere,warming the rest f the wrld.Lsing the rainfrests may als influence wind and rainfall patterns,ptentially causing certain natural disasters all ver the wrld.
In the past hundred years,humans have begun destrying rainfrests in search f three majr resurces:land fr crps,wd fr paper and ther prducts,land fr raising farm animals.This actin affects the envirnment as a whle.Fr example,a lt f carbn dixide(二氧化碳)in the air cmes frm burning the rainfrests.Peple bviusly have a need fr the resurces we gain frm cutting trees but we will suffer much mre than we will benefit.
There are tw main reasns fr this.Firstly,when peple cut dwn trees,generally they can nly use the land fr a year r tw.Secndly,cutting large sectins f rainfrests may prvide a gd supply f wd right nw,but in the lng run it actually reduces the wrld’s wd supply.
Rainfrests are ften called the wrld’s drug stre.Mre than 25% f the medicines we use tday cme frm plants in rainfrests.Hwever,fewer than 1% f rainfrest plants have been examined fr their medical value.It is extremely likely that ur best chance t cure diseases lies smewhere in the wrld’s shrinking rainfrests.
1.Rainfrests can help t adjust the climate because they .
A.reflect mre heat int the atmsphere
B.bring abut high rainfall thrughut the wrld
C.rarely cause the temperature t drp lwer than 16℃
D.reduce the effect f heat frm the sun n the earth
答案:D
解析:细节理解题。从第一段第二句“Rainfrests have a great effect n the wrld envirnment because they can take in heat frm the sun and adjust the climate.”可知答案。
2.What des the underlined wrd“this”in the third paragraph refer t?
A.We will lse much mre than we can gain.
B.Humans have begun destrying rainfrests.
C.Peple have a strng desire fr resurces.
D.Much carbn dixide cmes frm burning rainfrests.
答案:A
解析:代词指代题。从第二段后面的叙述中可知人们失去的会比得到的多。
3.It can be inferred frm the text that .
A.we can get enugh resurces withut rainfrests
B.there is great medicine ptential in rainfrests
C.we will grw fewer kinds f crps in the gained land
D.the level f annual rainfall affects wind patterns
答案:B
解析:推理判断题。从最后一段的数字列举中可知B项最适合。
4.What might be the best title fr the text?
A.Hw t Save Rainfrests
B.Hw t Prtect Nature
C.Rainfrests and the Envirnment
D.Rainfrests and Medical Develpment
答案:C
解析:主旨大意题。本文是在向读者介绍热带雨林的减少会对环境造成的影响,呼吁人们要保护热带雨林,进而保护整个人类赖以生存的环境。
B
Plants can’t cmmunicate by mving r making sunds,as mst animals d.Instead,plants prduce vlatile cmpunds,chemicals that easily change frm a liquid t a gas.A flwer’s sweet smell,fr example,cmes frm vlatile cmpunds that the plant prduces t attract insects such as bugs and bees.
Plants can als detect vlatile cmpunds prduced by ther plants.A tree under attack by hungry insects,fr instance,may give ff vlatile cmpunds that let ther trees knw abut the attack.In respnse,the ther trees may send ff chemicals t keep the bugs away—r even chemicals that attract the bugs’ natural enemies.
Nw scientists have created a quick way t understand what plants are saying:a chemical sensr(传感器)called an electrnic nse.The “e-nse”can tell cmpunds that crp plants make when they’re attacked.Scientists say the e-nse culd help quickly detect whether plants are being eaten by insects.But tday the nly way t detect such insects is t visually inspect individual plants.This is a challenging task fr managers f greenhuses,enclsed gardens that can huse thusands f plants.
The research team wrked with an e-nse that recgnizes vlatile cmpunds.Inside the device,13 sensrs chemically react with vlatile cmpunds.Based n these interactins,the e-nse gives ff electrnic signals that the scientists analyze using cmputer sftware.
T test the nse,the team presented it with healthy leaves frm cucumber,pepper and tmat plants,all cmmn greenhuse crps.Then the scientists cllected samples f air arund damaged leaves frm each type f crp.These plants had been damaged by insects,r by scientists wh made hles in the leaves with a hle punch(打孔器).
The e-nse,it turns ut,culd identify healthy cucumber,pepper and tmat plants based n the vlatile cmpunds they prduce.It culd als identify tmat leaves that had been damaged.But even mre impressive,the device culd tell which type f damage—by insects r with a hle punch—had been dne t the tmat leaves.
With sme fine-tuning,a device like the e-nse culd ne day be used in greenhuses t quickly spt harmful bugs,the researchers say.A device like this culd als be used t identify fruits that are perfectly ripe and ready t pick and eat,says Natalia Dudareva,a bichemist at Purdue University in West Lafayette,Ind.wh studies smells f flwers and plants.Hpefully,scientists believe,the device culd bring large benefits t greenhuse managers in the near future.
5.We learn frm the text that plants cmmunicate with each ther by .
A.making sme sunds
B.waving their leaves
C.prducing sme chemicals
D.sending ut electrnic signals
答案:C
解析:推理判断题。从第一段中的“Plants can’t cmmunicate by mving r making sunds,as mst animals d.Instead,plants prduce vlatile cmpunds,chemicals that easily change frm a liquid t a gas.”可知选C项。
6.What did the scientists d t find ut if the e-nse wrked?
A.They presented it with all cmmn crps.
B.They fixed 13 sensrs inside the device.
C.They cllected different damaged leaves.
D.They made tests n damaged and healthy leaves.
答案:D
解析:细节理解题。从文章倒数第三段中的“T test the nse,the team presented it with healthy leaves frm...”可知答案为D项。
7.Accrding t the writer,the mst amazing thing abut the e-nse is that it can .
A.pick ut ripe fruits
B.spt the insects quickly
C.distinguish different damages t the leaves
D.recgnize unhealthy tmat leaves
答案:C
解析:细节理解题。由倒数第二段中的“But even mre impressive,the device culd tell which type f damage—by insects r with a hle punch—had been dne t the tmat leaves.”可知答案为C项。
8.We can infer frm the last paragraph that the e-nse .
A.is unable t tell the smell f flwers
B.is nt yet used in greenhuses
C.is designed by scientists at Purdue
D.is helpful in killing harmful insects
答案:B
解析:推理判断题。由最后一段第一句“With sme fine-tuning,a device like the e-nse culd ne day be used in greenhuses t quickly spt harmful bugs”可推断选B项。