Unit 7 Signs around us（校本练习题）英语牛津上海版七年级第一学期

这是一份Unit 7 Signs around us（校本练习题）英语牛津上海版七年级第一学期，共21页。

Unit 7 Signs around us
单元分析：本单元的主要内容是主要讨论现实生活中4种标志的含义和出现的地点，以及一些规则的重要意义。重点学习了It means…，学会用情态动词（must, mustn’t等）表示义务及禁忌。会用介词(in, on等)指明地点。通过本单元的学习，唤起学生遵守交通规则的意识。
单元核心词汇： silence, useful, camp, player, land, miss, luck, a direction/ warning sign, an instruction/information sign, in the park, in the countryside, on the road, at school等。

Exercise One
I. Fill in the blanks with the given words or phonetic symbols 5%
1. An ______________ /ɪnˈstrʌkʃən/ sign tells us how to do something.
2. We shall go to Britain for our winter _________./kQMP/
3. Can you _________us how to go to his house?(information)
4. Can you give me some_________about the project. (instruct)
5. Why don’t we go _________ this weekend? (camp)
6. It is _________ (use) to speak English as much as possible.
II. Read and choose the best answer. 5%
( )1. Which of the following underlined parts is different in pronunciation from the others?
A. There are some children playing on the playground.
B. Tomorrow will be a cloudy day.
C. My uncle moved to a new house last month.
D. That little boy is my cousin.
( )2. This sign tells us _____ right.
A. turn B. to turn C. turns D. turning
( )3. _____ are used to tell us how to do something.
A. Instructions B. Directions C. Warning D. Information
( )4. Look, there are some pieces of paper on the floor. Please _____.
A. pick up it B. pick up them
C. pick them up D. pick it up
( )5. You _____ park your car in front of the school gate.
A. needn’t B. mustn’t C. couldn’t D. must
( )6. ---Can I help you? ---_________.
A. That’s right. B. Please go ahead. C. Yes, please. D. You’re welcome.
III. Rewrite the sentences as required. 10%
1. The dog put the meat under the tree.（改为一般疑问句）
__________ the dog __________ the meat under the tree?
2. This sign means you can have a barbecue here.（对划线部分提问）
__________ does this sign __________ ?
_________ the ________ of this sign?
3. Turn right, and you’ll find a big supermarket. (保持原句意思)
__________ you turn right, you __________ find a big supermarket.
4. We didn’t go outside because it is raining.(划线提问)
__________ __________ you go outside?
5. can, find, signs, different, we , kinds, of , our, in , life.(连词成句)
_____________________________________________________
IV. Complete the following passage with the words or phrases in the box. Each can only be used once(将下列单词或词组填入空格。每空格限填一词，每词只能填一次)
A. looks B. same C. different D. there E. why
Dear Samia,
Thank you for your letter. I enjoyed reading it because I miss my friends. But London is exciting, and the people at my new school are nice.
My teacher says I must practise my English. That’s ___1___ I’m writing to you in English. My teacher helped me.
A lot of things are ___2___ here. The weather is cold, and it often rains. I need an umbrella, but I haven’t got one yet, so I often get wet! The weekend is different, it’s on Saturday and Sunday, not Friday. The buses are different, they are red and they have two floors. I like riding on the top floor.
Our neighbourhood is OK. Near our house, ___3___ is a big park with lots of green grass, trees, water and a really good playground, I can go there after school.
Last weekend, I went to the London Eye with my parents. That was great! The London Eye ___4___ like a big bicycle wheel. In fact, it’s the biggest wheel in the world. We went into a big glass box, and the wheel lifted us up high. We could see all of London from the top.
Write again soon.
Love from Hanan.
1.________ 2.________ 3.________ 4.__________
V. Read the passage and fill in the blanks with proper words.
We have been in Australia for three days. We’re having a good time here. Australia is the sixth l___1___ country in the world. There are too many things to see, so it is impossible for me to tell you everything. Sydney is a beautiful city. There are many big trees and beautiful flowers around the houses and they look really beautiful. There are also some special a___2___ in Australia, such as kangaroos and koalas. They are really lovely.
During the past three days we’ve visited many p___3___ of interest around Sydney. I’d like to spend more time here, but we will f___4___ to another city, Cairns, to see coral beds (珊瑚礁) tomorrow. It is said that words cannot describe the beauty of the colourful corals. Many famous cartoon films were made there. Now we are b___5___ packing our bags so that we will not lose time when we leave. We can enjoy o___6___ in Cairns this time tomorrow. I’m looking f___7___ to going there!
1. ________2. ________3. _______ 4. _______ 5. _________ 6. _________ 7. _________


Exercise Two
I. Fill in the blanks with the given words or phonetic symbols 5%
1. Please show me the ____________ /dE'rekSn/.
2. ________ signs tell us things we must not do. /wO:nIN/
3. Mary is a lovely girl. She is always __________ and helpful. (friend)
4. No __________ here. (fish)
5. We must wash these __________ in warm water. (cloth)
6. What’s the _________ (mean) by your words?
II. Read and choose the best answer. 5%
( )1. It’s convenient to have a car in your home. Which of the following is correct for the underlined word in the sentence?
A. /kVn'vi:nIEnt/ B. /kEn'vi:nIEnt/ C. /kEn'vInIEnt/ D. /kEn'vEnIEnt/
( )2. We must wash these clothes in warm water. This is ___________sign.
A. a direction B. an instruction C. a warning D. an information
( )3. This sign tells us___________ smoke here.
A. not B. don’t C. not to D. to not
( )4. A:Must I finish the homework now?
B: ___________. You can hand them in tomorrow.
A. Yes, you must. B. Yes, you need.
C. No, you mustn’t. D. No, you needn’t.
( )5. If it ___________ tomorrow, we will go hiking.
A. will rain B. doesn’t rain C. won’t rain D. rain
( )6. ─ _______ will I get to the Country Park？
─You can go there by underground.
A. What B. Where C. How D. Why
III. Rewrite the sentences as required. 10%
1. We’ve found some information. (改否定句)
We_______ _______ any information.
2. This is a warning sign. (就划线部分提问)
_______ _______of sign is this?
3. It takes us about 30 minutes to get there by taxi. (就划线部分提问)
_______ _______ _______it _______ you to get there by taxi?
4. We can find the sign in the countryside. (就划线部分提问)
_______ _______we find the sign?
5. We have different rules to live happily. .(划线提问)
________ _______we have different rules?
6. turn ,must, we, right, here. (连词成句)
__________________________________________________
IV. Complete the following passage with the words or phrases in the box. Each can only be used once(将下列单词或词组填入空格。每空格限填一词，每词只能填一次)
A. before B. by C. noise D. never E. rang
Miss Mona lives alone in a small flat. She was old and did not like ___1___ at all, so she was very pleased when the noisy young man and woman in the flat above her moved out. A new young man moved in and Miss Mona thought, “ Well, he looks silent.”
But at three o’clock the next morning. Miss Mona was woken up (吵醒) ___2___ the barking of a dog. She thought, “ I have ___3___ heard a dog here before. It must belong to (属于) the new man in the flat above.” So she telephoned the young man, said some unpleasant words to him about the dog and then hung the telephone up before he could answer.
Nothing more happened the next morning. Then Miss Mona’s telephone ___4___ . When she answered, a voice said, “ I’m the man above, I have to ring up (打电话) to say that I haven’t got a dog.”
1. ________ 2._________ 3. ________ 4. _______
V. Answer the questions.
I love to write! Ever since I was a five-year-old girl, I wrote stories in my notebooks and on small pieces of paper. I told stories to my friends. As a grown-up, I have written over 100 books! That’s a lot! As a teacher, it’s my goal to encourage all of my students to love to write.
Writing is easy if you’re careful enough, I told them. Anyone can be a writer. You just put your pencil on your paper and write what you like to read, step by step:
※Create great characters. If you know your characters well, they’ll write the story for you.
※Interest the readers right at the beginning. You can start your stories with a dialogue or an action. If the reader asks questions about your book, that means he or she is interested in it.
※Follow the steps. The steps for every story are almost the same: Introduce the characters and the conflict(争端); things get worse; all seems lost; the hero saves the day!
※Humour is important. Remember, when writing, it doesn’t hurt to add some humour (幽默). That’s because everyone enjoys reading the humor in the book.
1. When did the writer start to write stories?
________________________________________________
2. How many books has the writer written when she is a grown-up?
________________________________________________
3. What’s the writer’s goal(目标) to be a teacher?
________________________________________________
4. How do you know readers are interested in the book?
________________________________________________
5. Why should we add the humour in the book?
________________________________________________
6. How many steps are usually in a story? What are they?
_________________________________________________




Exercise Three
I. Fill in the blanks with the given words or phonetic symbols. 5%
1. The children are sleeping. Please keep ____________ / 5saIlEnt/.
2. If you ________ on a sign, you must say what it means./LQnd/
3. Tom was so _________that he caught the last bus.(luck)
4. All the _________took active part in the sports players. (play)
5. It is my _________time to visit Beijing. I’m so excited. (one)
6. We must not ride bicycles. It’s a ______ (warn) sign.
II. Read and choose the best answer. 5%
( )1. Which of the following underlined parts is different in pronunciation from others?
A. The boy with a ball looks cool.
B. My father enjoys cooking very much.
C. The boys and girls stood in a circle.
D. Rose goes to school on foot.
( )2. The baby is sleeping. Stop making ___________noise.
A. more B. much C. many D. enough
( )3. Please wash these clothes ___________warm water.
A. on B. in C. for D.by
( )4. A:Must I finish the work now?
B: ___________. The boss is looking forward to it.
A. Yes, you must. B. Yes, you need.
C. No, you mustn’t. D. No, you needn’t.
( )5. “Keep silent.” It is ___________ sign.
A. a direction B. an instruction C. a warning D. an informationn
III. Rewrite the sentences as required. 10%
1. You must throw rubbish into the river. (否定)
You ____________ ____________ rubbish into the river.
2. “No fishing” is a warning sign. (划线提问)
____________ ____________ of sign is it?
3. What an exciting film “Avatar” is! (保持句意)
____________ ____________ the film “Avatar” is !
4. This sign means you can have a barbecue here.（对划线部分提问）
__________ does this sign __________ ?
5. my , it , turn, roll , is , to , the, dice..(连词成句)
__________________________________________________________
IV. Complete the following passage with the words or phrases in the box. Each can only be used once(将下列单词或词组填入空格。每空格限填一词，每词只能填一次)
A. get B. all C. write about D. Where E. down
When he was just a lad (少年), Sam fell in love with the water. He would go to the bank to sit and look at all ships that went by. “ ____1____ does all water go ?” To see all of the big rivers was his wish.
At last Sam had his wish. He got a job to run a boat ____2____ the river. This was a big test. The first day there was a fog. Sam could not see past the deck. He did not know how much water there was in the river.
“ Will the boat be out and into the bank?” he asked. “ What if it stops in the mud?” “ Can I ____3____ the boat down the river?” He didn’t know.
Then came the cry, “ Mark Twain”. Sam knows he can get there now. For, like all river men, he knows the words. “ Mark Twain” means “Good water through round.”
Many years after that first day, Sam would make use of that cry. He would take the words “Mark Twain” for his name when he came to ____4____ his times on the water.
1. ________ 2._________ 3. ________ 4. _________
IV. Choose the best answer.
In the 13th century, the famous Italian traveler, Marco Polo, traveled a long way to China. During his stay in China, he saw many wonderful things. One of the things he discovered (发现) was that the Chinese used paper money. In western countries, people did not use paper money until 15th century. However, people in China has already begun to use paper money since the 7th century.
A Chinese man called Cai Lun invented (发现) paper almost 2,000 years ago. He made it from wood. He took the wood from trees and made it into paper. Now paper still comes from trees. We use a lot of paper every day . This means that we are cutting down trees every day. It is very bad for the environment. We must save paper now.
But how can we save paper? We can use both sides of every piece of paper. We can choose drinks in bottles instead of those in paper packets. We can also use cotton handkerchiefs (手帕) instead of issues (面巾纸). When we go shopping, we can bring our own bags and do not use paper bags.
By saving paper, we can help protect the environment. But we sould do it now, before it is too late.
( )1. People in western countries first used paper money in the _____ century.
A. 17th B. 15th C. 13th D. 7th
( )2. When Marco Polo was in China, he _________.
A. met Cai Lun, the inventor of paper.
B. learned to make paper from wood
C. saw the paper money used by Chinese
D. read a lot of books
( )3. _______ is bad for the environment.
A. Using paper B. Making paper C. Cutting down trees D. Saving paper
( )4. Which of the following is NOT a way of saving paper?
A. To use both sides of every piece of paper
B. To use our own bags.
C. To use cotton handkerchiefs instead of tissues.
D. To choose drinks in paper packets.
( )5. What does the underlined word “protect” in the last paragraph mean?
A. Save. B. Keep safe C. Make clean. D. Make beautiful.
( )6. Which is the best title (题目) of the passage?
A. Saving Paper. B. The History of Paper
C. Cotton Handkerchiefs Back Again. D. Cai Lun, a Great Inventor.


Exercise Four
I. Fill in the blanks with the given words or phonetic symbols 5%
1. I think this dictionary is very ____________ /'ju:sfl/.
2. When I heard that he would have a test, I said to him.’ Good ________. /lVk/
3. Give_________some candies. (I)
4. Do you know the _________about the writer? (inform)
5. We can turn left and go to People’s Square. It’s a_________sign. (direct)
6. People think computers are very_________in our life. (use).
II. Read and choose the best answer. 5%
( )1. Which of the following underlined parts is different in pronunciation from others?
A. Mr Brown is a manager in a hotel.
B. We are sad to learn the bad news.
C. An apple a day keeps the doctor away.
D. The doctor saved many people’s lives.
( )2. We must stop ___________the environment and help keep the environment clean.
A. pollution B. pollute C. polluting D. enough
( )3. All the players took ___________to roll the dice in the game.
A. turn B. turned C. turns D. turning
( )4. Before you use the DVD player, please read the ___________first.
A. direction B. instruction C. warning D. information
( )5. A: Must I wear the uniform?
B: ___________. But you can wear you own clothes at weekends.
A. Yes, you must. B. Yes, you need. C. No, you mustn’t. D. No, you needn’t.
III. Rewrite the sentences as required. (10%)
1. There is something important I want to tell you.(改为否定句)
There is ______ ________ I want to tell yoo.
2. Let’s go fishing, _______ _______? (反意疑问句)
3. We have rules to stop people from polluting the environment. (对划线部分提问)
_________ _________ we have rules for?
4. We are not allowed to take photos in the museum. (保持句意基本不变)
We _________ _________ photos in the museum.
5. must , these , clothes , warm , in , we , wash , water ( 连词成句)
_________________________________________________________________
IV. Complete the following passage with the words or phrases in the box. Each can only be used once(将下列单词或词组填入空格。每空格限填一词，每词只能填一次)
A. climb B. takes C. around D. good E. Too
Erden likes to be outside, enjoying nature. He wants to visit beautiful places ___1___ the world. “How can I travel without using gas?” Erden wonders. Using gas isn’t ___2___ for nature. It makes the world dirty. Ship and airplanes use gas. Cars and buses use gas. Can Erden travel without gas? “I can use my own power,” thinks Erden.
“I can ___3___ mountains,” says Erden. Erden walks up and down large mountains.
“I can ride a bike,” Erden thinks. Erden rides his bike on long roads.
“I’m good at rowing a boat,” he says. Erden rows a boat across the ocean, from America to Australia. It ___4___ a long time. Erden climbs and rides and rows around the world for many months!
Erden feels tired sometimes, but he doesn’t stop. He says, “I can do it!” In the end, Erden sees the world and keeps it beautiful, too.
1. _________ 2. _________3. _________ 4. _________
IV. Read the passage and fill in the blanks with proper words.
It’s my father’s 45th birthday today. I planned a birthday party for him.
First, I told Mum my p___1___. Next, I called Mr Norman, Dad’s best friend. He told me the name of Dad’s favourite restaurant. Then I gave it a call and o___2___ some tables. At last, I called some relatives and friends. I a___3___ them to the party. Aunt Jenny couldn’t believe it. She even asked, “Is it you, Bill? You always f___4___ your father’s birthday!”
This afternoon, I went to the restaurant e___5___ to make sure everything was ready. Half an hour later, Mum came here with Dad. When they came in, e___6___ said, “Happy birthday!”
Dad was very h___7___. We all had a good time. After the party, Dad said to me, “Thank you, Bill. This is my favourite birthday present. I’ll remember it.”


7AU7 单元练
I. Complete the sentences with the proper forms of the given words （用所给单词的适当形式填空）
1. The teacher ____________ students not to leave rubbish every day. (warn)
2. This game needs four or more__________, and a dice.(play)
3. That sign tells us to stop here. It’s an __________sign.(instruct)
4. We can get _____________information here.(use)
5. What ’s the ____________of the word?(mean)
6. It shows the _____________.(direct)
7. There is an _______ centre in this department store. (inform)
8. __________, he missed the bus and was late for the meeting. (luck)
9. Good __________ with your exams. (lucky)
10. Anakin was a ____________ boy. He won the first prize in the contest. (luck)
II. Complete the sentences with proper words. The first letters are given. (用适当的单词完成句子，首字母已给)
1. D_________ signs tell us how and where to go.
2. W_________ signs tell us things we must not do.
3. I wish you good l_______.
4. Tim got up late and m______ the bus, so he was late for school.
III. Translate the following sentences into English (将下列句子翻译成中文)
1. 它是一个说明标志。
__________________________________________________________________
2. 这个标志告诉我们怎么去和去哪儿。
__________________________________________________________________
3. 这个标志告诉我们想要知道的事。
_________________________________________________________________
4. 我们可以在这儿得到有用的信息。
__________________________________________________________________
5. 我必须在这儿停下我的车。
__________________________________________________________________
IV．Choice （选择题）
( )1. Which of the following underlined parts is different in pronunciation with others?
A. May is the fifth month of the year.
B. We can go to school together.
C. I don’t think you are right.
D. My parents are both doctors.
( )2. The baby is sleeping. Please keep silent.
A. /saI'LEnt/ B. /'saILEnt/ C. /sI'LEnt/ D. /sI'Lent/
( )3. My aunt works in ______ office and always wears ______ uniform in her job.
A. a, a B. a, an C. an, an D. an, a
( )4. The accident happened ______ 4 April, 2003.
A. on B. in C. at D. to
( )5. There ______ some chalk and two boxes on the teacher’s desk.
A. is B. have C. has D. are
( )6. Now it’s our ________ to put on performances.
A. turns B. turn C. order D. orders
( )7. Can you keep the children ______, please? It’s too noisy.
A. quietly B. quiet C. quietly D. quite
( )8. What does the teacher want to ______?
A. speak B. say C. tell D. talk
( )9. You_______ be careful when you start a fire.
A. need B. can C. must D. may
( )10. There are so ______ people and so _______ noise in the street.
A. many…much B. few…much C. much…few D. many…many
( )11. If my father ______ free next Sunday, he ______ me to the park.
A. is …will take B. will be…takes C. is…takes D. will be…will take
( )12. –Which sign can’t we see in the hospital? —“______”.
A. No smoking B. Toilet C. Silence D. Barbecue
( )13. I have two brothers. ______ is a driver, ______ is a policeman.
A. One, one B. One, other C. One, the other D. The one, the one
( )14. Look, there is a lot of paper on the floor. Please ______.
A. pick up it B. pick up them C. pick them up D. pick it up
( )15. I’ve got ______ information about the match.
A. many B. an C. a lot D. a piece of
( )16. You can’t ______ the road when you see the ‘red man’.
A. across B. to cross C. cross D. crossing
( )17.The old man ______ to take medicines .He’s already fine.
A. needn’t B. need C. doesn’t need D. needs not
( )18. Would you like ______ on such a hot day?
A. to going cycling B. to go cycling C. go cycling D. going cycling
( )19. Mum is ______ a new flat for my family these days.
A. finding B. looking for C. looking at D. finding out
( )20. The teacher told him ________ late for school again.
A. to be B. not to be C. being D. not to
( )21. We should take turns ______ the bus.
A. get on B. to get on C. getting on D. to getting on
( )22. — You mustn’t swim in deeper water, Jack!
— __________.
A. Yes, I will B. Yes, I won’t C. Ok. I won’t D. Not at all
( )23. This sign tells us how ________ thick clothes.
A. can wash B. can I wash C. wash D. to wash
( )24. We have rules to keep us ________, so we must obey them.
A. safely B. safety C. safe D. unsafe
( )25. –You look very nice in dark blue. —_______.
A. I don’t mind B. No, not at all C. That’s all right D. Thank you
V. Rewrite the sentences as required (按要求改写句子)
1. This sign means you can have a barbecue here.（对划线部分提问）
__________ does this sign __________ ?
2. Turn right, and you’ll find a big supermarket. (保持原句意思)
__________ you turn right, you __________ find a big supermarket.
3. This sign tells us to dive here. (改为否定句)
This sign tells us ____________ to ____________ here.
4. We are not allowed to take photos in the museum. (保持句意)
We ____________ ____________ photos in the museum.
5. not, us, we, do, things, this, tells, sign, must (连词成句)
________________________________________________.
VI．Complete the following passage with the words or phrases in the box. Each word or phrase can only be used once（将下列单词或词组填入空格。每空格限填一词，每词或词组只能填一次） (A)
A. say B. restaurant C. much D. talk E. sorry
It is interesting to visit another country, but there are sometimes problems when we don’t know the country very well. It may be difficult to talk with the people there. We may not know how to use the telephone in the country we are visiting. We may not know how to buy the things we need. In a strange country we might not know where to eat or what to order in a 1. _________. It is not easy to decide how 2. _________ to tip waiters or taxi drivers. When we need help, we might not know how to ask for help. It is not pleasant to have an experience like that. In a short time, however, we learn what to do and what to 3. _________. We learn to enjoy life in another country, and then we may be 4. _________ to leave.
1. ________ 2._________ 3. ________ 4. _________
(B)
A. add B. users C. college (大学) D. join E. age
Facebook is the largest social network in the world. Mark Zuckerberg founded(建立) it in February 2004 with the help of his roommates. Mark Zuckerberg was a 1. _________ student at Harvard at that time. At first, Facebook was only for Harvard students. But now, if you are aged 13 and over, you can be a user of Facebook. Users can upload photos, 2. _________ other users as friends and exchange messages with other users. At the same time, you may 3. _________ all kinds of interesting groups.
Till now, Facebook has more than 500,000,000 4. _________. Each user spends 19 minutes a day on Facebook on average.
1. ________ 2._________ 3. ________ 4. _________

VII. Picture talk
Marry
Harry
Dick
Are they right or wrong? Find out what they have done wrong and tell what they must or mustn’t do.(at least four)

For example:
John
Tom boy is wrong.
He is picking the flowers on the grass.
Tom
It is not allowed because there is a warning sign there.
Peter
It says we mustn’t pick flowers .



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______________________________________________________________________________
______________________________________________________________________________






Unit 7 Signs around us
参考答案

Exercise One
I. 1. instruction 2. camp 3. inform 4. instructions 5. camping 6. useful
II. DBACBC
III. 1. Did put 2. What does/What’s meaning 3. If will 4. Why didn’t
5. We can find different kinds of signs in our life. / In our life we can find different kinds of signs.
IV. ECDA
V. 1. largest 2. animals 3. places 4. fly 5. busy/beginning , 6. ourselves



Exercise Two
I. 1. direction 2.Warning 3.friendly 4. fishing 5. clothes 6. meaning
II. BBCDBC
III. 1. haven’t found 2.What kind 3. How long does take 4. Where can
5. We must turn right here.
IV. CBDE
V. 1. When she was 5 years old./At her age of 5.
2. Over 100 books.
3. Her goal is to encourage all of my students to love to write.
4. If they ask questions about your book, that means they are interested in it.
5. Because everyone enjoys reading the humor in the book.
6. 4/Four.



Exercise Three
I. 1. silent 2. land 3. lucky 4. players 5. first 6. warning
II. ABBAB
III. 1. mustn’t throw 2. What kind, 3. How exciting , 4. What mean
5. It is my turn to roll the dice.
IV. DEAC
V. BCDAA




Exercise Four
I. 1. useful 2. luck 3. me 4. information 5. direction 6. useful
II. DCCBA
III. 1. nothing important 2. shall we 3.Why do 4. mustn’t take ,
5. We must wash these clothes in warm water.
IV. CDAB
V. 1. plan 2.ordered 3. asked , 4.forget 5. early 6.everyone/everybody 7.happy


U7单元练
I. warning, players, instruction, useful, meaning, direction, information, Unluckily, luck, lucky
II. Direction, Warning, luck, missed
III. 1. It’s an instruction sign.
2. This sign tells us when and where to go.
3. This sign tells us things we want to know.
4. We can get useful information here.
5. I must stop my car here.
IV. 1-5 BBDAA 6-10 BBBCA 11-15 ADCDD 16-20 CCBBD 21-25 BCDCD
V. 1. What， mean 2. If ，will 3. not， dive 4. mustn’t take
5. This sign tell us things we must not do.
VI. (A)BDAE (B) CADB
VII. (omitted)