九上unit2 Saving the earth 全单元3个话题练习题(含答案)-2

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仁爱版九年级英语上册Unit2 saving the earth 单元测试题(附答案)

仁爱版九年级英语上册Unit2 saving the earth 单元测试题(附答案)

Unit 2单元测试题(满分120分,时间100分钟)第一部分听力(25分)Ⅰ.听句子,选择正确图片。

每个句子读一遍。

(5分)1._____2._____3._____4._____5._____Ⅱ.听句子,选择正确答语。

每个句子读一遍。

(5分)( )6.A.Since I was born. B.Four times. C.In two weeks.( )7.A.He’s gone home. B.He will go to his hometown.C.He’s on the way home.( )8.A.They’ll return next month. B.They’ll visit their parentsC.They’re doing some shopping.( )9.A.No, I didn’t. B.Yes, I went there last month.C.Yes, I will.( )10.A.It’s very interesting. B.Yes, I do. C.It’s a big city.Ⅲ.听对话,选择正确答案。

每段对话读两遍。

(5分)听对话,回答11-12题。

( )11.How long has the man taught at the school?A.For ten years.B.Since 1990.C.Since five years ago.( )12.How long has the man worked there?A.For about seven years.B.Since the factory opened.C.Since 20 years ago.听对话,回答第13-15题。

( )13.Where has Jack been?A.To a car factory.B.To a park.C.To a farm.( )14.Why has the lake become dirty?A.Because there was no one to protect it.B.Because there were too many dead fish.C.Because the visitors threw rubbish into the lake.( )15.What did Jack take to the leader of the park?A.Some news.B.A bottle of water and some dead fish.C.A report.Ⅳ.听短文,选择正确答案。

仁爱科普版九年级上册Unit 2 Saving the earth.Topic 3 学案(含答案)

仁爱科普版九年级上册Unit 2 Saving the earth.Topic 3 学案(含答案)

仁爱科普版九年级上册Unit 2 Saving the earth.Topic 3 学案(含答案)Unit2 Topic3 Section Aenvironmental protection 环境保护protect the environment 保护环境work for 为……而工作work out 算出,计算出both sides of paper 纸的两面plastic bags 塑料袋spread the message 传播消息encourage sb. to do sth. 鼓励某人做某事hurry up 快点give up doing sth 放弃做某事reduce 减少使用reuse 再次使用recycle 循环使用Section Bought to do sth. 应该做某事should do sth. 应该做某事be supposed to do sth. 应该做某事would like to do sth. = want to do sth. =feel like doing sth. 想要做某事shut off 关掉(机器);切断(水,煤气或电)instead of + n./pron./v-ing代替,而不是travel a short/long distance 短/长距离旅行take actions to do sth. 采取行动做某事Easier said than done.说起来容易,做起来难Actions speak louder than words.事实胜于雄辩。

save energy 节约能源clothing bags 布袋plastic bags 塑料袋cry for help 哭着求救after all 毕竟,归根结底Section Crenewable energy 可再生能源in people’s everyday/daily lives在人们的日常生活中require sb. to do sth. 要求某人做某事be required to do sth. 被要求做某事in the near future 在不久的将来reach a top speed of… 达到最高速……at a speed of 以...的速度up to 达到,至多有up to now 直到现在best-known 最知名的It takes sb. some time to do sth. 做某事花费某人...时间run out 用完,耗尽renewable sources 可再生能源sunlight 日光moonlight 月光sea waves 海浪Section Dremove…from… 把……从……除去though/although/even though even if 虽然,尽管.引导让步状语从句,不能和but连用,但可与yet,still 连用。

【最新】仁爱版九年级上册《Unit 2 Saving the Earth Topic 3 Section B》当堂训练

【最新】仁爱版九年级上册《Unit 2 Saving the Earth Topic 3 Section B》当堂训练

最新版英语学习资料《Unit 2 Saving the Earth Topic 3 Section B》当堂训练姓名:_____________班级:九(___)一、单项选择。

( ) 1. Everyone ought ______ a greener person.A. isB. beC. to beD. become( ) 2. He stayed home instead of _____ because of the heavy rain.A. go outB. went outC. going outD. goes out( ) 3. You’d better _____ on your coat. It is cold outside.A. putB. puttingC. to putD. puts( ) 4.The cleaners often collect all kinds of garbage in the park, then ____ them, so that they can be recycled.A. sortB. sortsC. recycleD. kind( ) 5. Please remember to _____ the tap after you using the water.A. turn offB. turn onC. closeD. shut off( ) 6. He used to be a good runner. He could run a long _____ without getting out of breath.A. pathB. distanceC. placeD. road( ) 7. You should come _____ next time. Don’t be late for class again.A. in timeB. on timeC. since timeD. by time( ) 8. ---What should you do to protect the environment? ----_______A. Turn on the lights when I leave a room.B. Throw wa ste everywhere.C. Take a cloth bag when I go shopping.D. Use plastic bags whenI go shopping.( ) 9. It’s easy _____ everyone to protect the earth.A. forB. ofC. toD. on( ) 10. ______ no one finds out about this.A. Mark sure ofB. MakeC. Make sureD. Be sure of二、句型大变脸。

英语九年级上册 Unit 2 Saving the Earth. Topic 3 What can we do to 同步练习-仁爱版

英语九年级上册 Unit 2 Saving the Earth. Topic 3 What can we do to 同步练习-仁爱版

Unit 2 Saving the earth - Topic 3 What can we do at home to protect theenvironment?同步练习核心词汇(Unit 2 Saving the earth - Topic 3 What can we do at home to protectthe environment?)同步练习(答题时间:20分钟)Ⅰ. 根据要求完成单词。

(A) 根据句意及汉语提示完成单词。

1. Biogas ________(技术)has been used in my hometown for nearly three years.2. Kris and Karl come from Europe. They’re _________(德国人).3. —How long will you ________(需要)to finish the work?—About three days.4. There are plenty of resources in the _________(深的)ocean.5. You need a ___(向导)to show you around the city.(B)根据句意及首字母提示补全单词。

6. My dog is ill. It _______ my care and attention.7. One _________ of my car is broken. I need to buy a new one.8. After these d_ days, everyone hopes for rain.9. The lake is so d________. Don’t swim in it.10. Nodding the head means a________.Ⅱ. 根据汉语意思完成英语句子。

1. 他的父母决定待在家里不出去了。

【初三英语试题精选】九年级英语上册Unit2SavingtheEarth词句巩固练(含答案)

【初三英语试题精选】九年级英语上册Unit2SavingtheEarth词句巩固练(含答案)
— Yes She ______ it two years ago
A visitsB visitedC has visitedD was visiting
3 Rick has learned a lot about Chinese culture ______ he came to China
A beforeB whenC untilD since
9This washing machine is very easy to use ________ can learn to use it in a very short time
ASomebodyBAnybodyCNobodyDFepeople
10None of us ________ running, but we all like swimming
4The boss made child laborers ________12 hours every day
AworkingBworksCworkDto work
5________ the environment is important for human beings
ATake care ofBTaking care ofCTook care ofDTake the care of
九年级英语上册Unit2SavingtheEarth词句巩固练(含答案)
Unit 2 Saving the Earth
词句巩固练习
I单项选择。
1— Holong ________ you ________ here?
— For about two years so far
Ahave; studiedBdid; liveCdo; stayDwere; swimming

九年级英语上册Unitt-2-Saving-the-Earth-Topic-3-What-can-w

九年级英语上册Unitt-2-Saving-the-Earth-Topic-3-What-can-w
C:…
13/16
1. You __o_u_g_h_t __t_o___(应该) throw the rubbish into the garbage.
2. You should _s_h_u_t__ _o_f_f ___(关闭)the electricity when you leave a room.
3. You’d better walk or ride a bikein__s_te_a_d_ of _____ (代替) taking a bus or a taxi if you travel a short distance.
4. It’s soe_a_s_y___(轻易) to be a greener person. 5. A__c_ti_o_n_s_ s_p__e_a_k l_o_u_d_e_r _t_h_a_n_ w__o_r_d_s___. 6. (行动胜于言辞)
You should sort the garbage. =You ought to sort the garbage.
ought to 应该 情态动词 ought to +动词原形 ought not to + 动词原形
2/16
You should /ought to …
n.电, 电能
shut off the electricity
10/16
2 Match them with the right pictures.
①Reduce waste.Don’t buy cups or boxes which can be used only once. ②Save electricity.Shut off the lights when you are not using them. ③Recycle boxes and plastic bottles. ④Grow fruit and vegetables

【仁爱版】九年级英语上册Unit2SavingtheEarth句式巩固练习(含答案)

【仁爱版】九年级英语上册Unit2SavingtheEarth句式巩固练习(含答案)

Unit 2 Saving the Earth句式巩固练习I. 单项选择。

1.He is tall, _____ his son is short.A.whenB.orC.whileD.and2.If we travel a short distance, we should walk _____ taking a bus. Then we’ll be greenerpeople.A.instead ofB.ratherC.whileD.but3.She bought a skate board online _____ she saved a lot of time.A.so thatB.as soon asC.such thatD.no matter4.You ought to return the book to the school library _____. Other students will borrow it.A.at timesB.in timeC.on timeD.at the same time5.He said that he _____ to Canada a few years ago.A.had been toB.have been toC.wentD.go6.—Can’t you stop making so much noise? I really can’t _____ it.—I’m terribly sorry for giving you so much trouble.A.keepB.standC.hearD.make7.Trees can stop the sand _____ towards the rich farmland in the south.A.movingB.to moveC.from movingD.moves8.There are five people in the room, but I know _____.A.both of themB. none of themC.all of themD.neither of them【真题链接】1. — ________ T-shirt is this?—I think it’s Tom’s.A. WhoseB. WhichC. WhatD. Who2. I will never forget the day ________ we spent in the old town with small houses.A. whoB. whomC. thatD. what3. We are supposed to ________ a solution to stop people from looking down at their mobile phones while driving cars.A. come up withB. come formC. come outD. come trueII. 完形填空。

九上unit2 Saving the earth 全单元3个话题练习题(含答案)

九上unit2 Saving the earth 全单元3个话题练习题(含答案)

第九册上单元2Topic3试题英语试题用英语写出下列词组1.环境的保护2.为……工作3.宣传有关……4. 减少浪费/ 空气污染5.……的两面6. (是)……而不是….7. 应当做某事8. 省钱/ 能源/ 电9. 占据许多空间10.从……获得能量11. 发动汽车12.推…….向前/向上/向下13. 通过做某事发电14. 水的流动15.被用作做某事16. 捡起垃圾17.作一个简短的口头报告I. Multiple choice (每小题1分)( ) 1.You’d better ride a bike to go to school taking a bus every day.A. instead ofB. insteadC. thanks toD. because of( ) 2.I don’t like the big computer.It too much money and up a lot of space.A. takes; notB. costs; takesC. takes; takesD. costs; costs( ) 3.Bad luck! My watch is broken, it doesn’t .A. and; workB. but; goC. so; turnD. or; run( ) 4.— These problems are really hard .— Let me help you them.A. to deal with; withB. to do with; withC. dealing with; forD. doing with; for( ) 5.She asked his son to the cup me when I wanted it.A. push; forwardB. push; towardsC. pull; towardsD. pull; to( ) 6.About 75% percent of the students can go swimming the rest can’tA. whileB. andC. soD. or( ) 7. Now the air in our hometown is than it was before, and we must do something for that.A. much betterB. more worseC. more betterD. much worse( ) 8.—is the Olympic Games held?— Every four years.A. How longB. WhereC. How oftenD. When( ) 9.Though the workers are tired, they don’t want to stop .A. workingB. workC. to workD. works( ) 10. Every student is to obey the school rules.A. supposeB. supposedC. shouldD. ought( )11.—When _____ he leave for the city?—He _____ next week.A.does; will leaveB.does; leavesC.has; has leftD.will; leaves( )12.—It’s a long story, but you can hardly find new words in it.—Good! _____ it will be too hard for children.A.SoB.AndC.ButD.Or( )13.Students ought _____ the truth.A.to tellB.tellC.tellingD.told( )14.He is tall, _____ his son is short.A.whenB.orC.whileD.and( )15.If we travel a short distance, we should walk _____ taking a bus.Then we’ll be greener people.A.instead ofB.ratherC.whileD.but( )16.She bought a skate board online _____ she saved a lot of time.A.so thatB.as soon asC.such thatD.no matter( )17.Every student is _____ to obey the school rules.A.supposeB.supposedC.shouldD.ought( )18.A farmer in England used animal waste to _____ his machine.A.manageeC.runD.start( )19.You ought to return the book to the school library _____. Other students will borrow it.A.at timesB.in timeC.on timeD.at the same time( )20.He is rich, _____ he is happy, too.A.andB.soC.orD.butII. Cloze test (本题共15分,每小题1分)Mr. Robinson had to travel somewhere on business, and as he was in ahurry, he decided to go by __1__ . He liked sitting __2__ a window when he was flyi ng, so he got onto the plane, he looked for a window seat. He __3__ all of them taken except one. There was a young man __4__ beside it, andRobinson was surprised that he had not taken the one by the window. Anyhow, he went towards it.When he __5__ it, however, he saw that there was a notice on it, written __6__ larg e letters, __7__ “This seat is kept for proper balance. Thank you.” Mr.Robinson had never seen such a notice before, but he thought the plane must be carryin g something particularly heavy in its room __8__ made itnecessary to have the passengers properly balance. So he walked on and found __9__ empty seat, not beside the window __10__ .Two or three other people __11__ to sit in the window seat next to theyoung man, but they also read the notice and went on. Then when the plane was nearly 12__ a very beautiful girl __13__ into the plane. The young man, who was watching th e passengers coming in, 14__ took the notice __15__ the seat beside him, and by this means succeeded in having a pretty companion duringthe whole trip.( )1. A. air B. water C. train D. bus( )2. A. on B. nearly C. beside D. far from( )3. A. wanted B. found C. thought D. hoped( )4. A. seating B. seated C. seat D. sat( )5. A. arrived B. sat on C. reached D. left( )6. A. through B. by C. with D. in( )7.A. said B. saying C. spoken D. speaking( )8. A. and B. this C. who D. which( )9. A. another B. other C. the other D. the only( )10. A. to sit B. to be sat C. to sit on D. to be sat in( )11. A. stuck B. tried C. managed D. refused( )12. A. empty B. full C. up D. down( )13. A. reached B. stepped C. entered D. left( )14. A. quickly B. fast C. slowly D. soon( )15. A. onto B. away C. off D. upmunication (每小题2分)Complete the dialogue with proper words or sentences.(Zhang=Z Mr.Smith=M)Z: Hello, are you Mr. Smith from the United States?M: Yes, Robert Smith. Please call me Robert. . 1. _________________.Z: My pleasure. Welcome to China. My name is Zhang Lin. You can call me Lin.This is my card.M: Thank you. And 2. _________________________.Z: Oh, good, thanks. How was the journey?M: 3. ______________________, although a little tiring.Z: Then let’s get your things and go to the hotel now.M: Oh, thank you. 4. ___________________________?Z: It’s about thirty minutes’ drive. By the way, we are going to have a dinner party for you this evening.M: It’s very kind of you. 5. _____________________?Z: Six thirty. I’ll pick you up at six o’clock.M: OK. See you then.Z: Bye.IV. Reading comprehension ,(A)It is important to learn about protecting our environment. Here is a 5R rule for us:1. ReduceIf you want to reduce the waste, you should use things wisely. People are cuttingdown millions of trees to make paper; if everyone uses paper carelessly and throws it out, soon we should not have any trees left. We are also wasting other things and don’t know what to do with the waste in big cities, so it is necessary to reduce thewaste.2. ReuseYou should always think of reusing the things before throwing them away. Giveyour used clothes or small ones to the poor. Within a family, you may pass on such clothes to younger brothers or sisters.3. RecycleWe can recycle bottles, cans and paper easily. By doing this we save lots of time and money. For example, We can send waste coke cans to a factory. Workers smash them flat and melt them, and then the metal things are made for new coke cans.4. RecoverWhen you buy a box of apples, there may be a few rotten apples, you have two choices: one is to throw the whole apples away, or you should cut off the rotten parts and use the good parts. In this way, you are recovering the eatable parts of food.5. RepairIf one of the legs of your table is broken, you can repair it instead of throwing thetable away. If you want to change for better ones, it is better for you to sell the old things or give them to other people who can use them after doing some repair. It is true that North Amer ica is a “throw-away” society, but the time has come to change our way of life so that we can protect our environment. Everyone should try our best. ( )1. Which of the following is TRUE?A. We’ll have no resources of nature unless we can deal with the w aste.B. Recycling is the best way to save resources.C. If we waste less, we can save more resources of nature.D. More things are wasted in developed countries than in developing countries.( )2. The “Reuse” rule mainly requires us .A. to make full use of our thingsB. to give our things to those who want themC. to use our things again and againD. not to throw away our things( ) 3. can be recycled.A. Only hard thingsB. Many thingsC. Few soft thingsD. All things( )4. What’s the right order of recycling coke cans?a. collect the used cansb. melt themc. smash them flatd. send them to a factoryA. a b c dB. a d c bC. d b c aD. c a b d( )5. The “Recover” rule mainly requires us .A. to use the good parts of thingsB. to cover waste thingsC. to throw away the useful partsD. to throw the whole things awayUnit2.3参考答案environmental protection 环境的保护spread message about… 宣传有关……reduce the waste/ air pollution 减少浪费/ 空气污染bo th sides of … ……的两面rather than (是)……而不是….save money/ energy/ electricity 省钱/ 能源/ 电be supposed to do sth. 应当做某事take up a lot of space 占据许多空间produce power from… 从……获得能量run the car 发动汽车push…forward /up /down 推…….向前/向上/向下power machines 发动机器produce electricity by doing sth. 通过做某事发电the movement of water 水的流动be used for doing sth 被用作做某事make a short journey 短途旅行pick the litter up 捡起垃圾produce a short oral report 作一个简短的口头报告一、单项选择.1—5 ABAAB 6—10 ADCAB11.B 本题考查一般现在时指将来,表示按日程表将要发生的动作或事件。

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第九册上单元2Topic1试题英语试题用英语写出下列词组1.忍受/改善/保护环境2.产生难闻的气味2.情绪好/差 4.把废水倒入河里5. 对某人/某物有害6.城市面貌7. 对某人大喊大叫;斥责某人8.目前9.打扰别人10.在吵杂的条件下11. 变聋了12.相当少13.几乎)与……一样差14.引发高血压15.在强烈、易变的光线下I. Multiple choice (每小题1分)( )1.—How long _____ you _____ here?—For about two years so far.A. have; studiedB. did; liveC. do; stayD.were; swimming ( )2.We have known each other _____ ten years ago.A. forB. everC. aboutD. since( )3.There is _____ pollution in the world. We must stop it.A. much tooB. too muchC. many tooD. too many( )4.—Is the flower beautiful?—Yes, at _____ it’s _____ the one you bought for me.A. last; as bad asB. least; no better thanC. last; not betterD. least; no worse than ( )5.I can’t stand _____ for you so long.A. to waitB. waitingC. waitsD. waited( )6.The boss made child laborers _____ 12 hours every day.A. workingB. worksC. workD. to work( )7._____ the environment is important for human beings.A. Take care ofB. Taking care ofC. Took care ofD. Take the care of( )8.—Have you finished your homework?—Not _____. There are still some exercises to be done.A. alreadyB. yetC. justD. ever( )9.—It smells terrible. What has happened here?—Look, there is much waste gas _____ from the chemical factory.A. pourB. pouringC. pouredD. pours( )10.When I was walking in the street yesterday, I saw a UFO _____ over my head.A. flyingB. fliesC. flewD. to fly()11.—Mum,I want to ask grandpa a question.—Oh. is reading newspaper upstairs.A.HeB.HimC.HisD.Himself()12.Mrs Liu is kind and always her help to others.A.sharesB.receivesC.makesD.offers()13.—You didn’t send me an e mail last night,did you?—Sorry.My broke down.I couldn’t get on line.puterB.carC.clockD.camera()14.John,you needn’t do your work today,you do it tomorrowif you’re tired.A.mustB.mayC.can’t()15.—Alice,you dance very well!—.A.Not so wellB.That’s all rightC.Thank youD.I agree with you()16.The Olympic Games every four years.A.are heldB.were heldC.are holdingD.will hold()17.Many trees and flowers in our school last year,and they made our school a beautiful garden.A.plantB.plantedC.have plantedD.were planted()18.—Must we finish giving out the posters today?—Yes,we .It can’t be put off any longer.A.canB.mayC.must()19.The plane at three o’clock in the afternoon.A.takes offB.takes awayC.takes outD.takes down()20.—Did you have any plans for your summer vacation?—I am for London next Sunday.A.going toB.leavingC.will goII. Cloze test (本题共15分,每小题1分)Joe wanted a computer. He asked his ____ 1 for the money and themsaid he must get it himself. But how did he get it? He ___ 2 about thiswhen he walked home.Not many people wanted to ask children to work for them. Maybe he couldtake away snow for the neighbors (邻居). But this was not _____ 3 . He hadto wait a long time for that. He couldn’t cut for their gardens ___ 4 he hadno tools (工具) to do the work with.Then he saw one of his classmates, Dick, delivering (送) _____ 5 . I coulddo that, he thought. Maybe I could even get the computer ____ 6 away. I couldpay _____ 7 it a little each week. He ran to ______8 up with Dick. Joe askedhim a lot of questions. He learned that it was _____ 9 to get twenty-five dollarseach week. He learned that the job (工作) took _____ 10 three hours each night. Dick _ ___ 11 him the phone number of the newspaper manager (经理).Joe almost flew home. After he had told his mother _______ 12 he thought,she _____ 13 .“I think it is a ____ 14 idea,” she said, “I’ll call the newspaper….”“Wait,Mum,” Joe said, “I’ll call. After that, I’m going to be a businessman now.” Joe ’s mother smiled _____ 15 .( )1. A. teachers B. parents C. classmates D. friends( )2. A. said B. told C. thought D. spoke( )3. A. spring B. summer C. autumn D. winter( )4. A. because B. when C. while D. after( )5. A. newspaper B. bikes C. computers D. tools( )6. A. now B. right C. just D. only( )7. A. on B. to C. of D. for( )8. A. take B. catch C. carry D. get( )9. A. friendly B. kind C. possible D. wrong( )10. A. at B. about C. before D. after( )11. A. taught B. gave C. made D. asked( )12. A. that B. when C. what D. where( )13. A. smiled B. shouted C. cried D. worried( )14. A. big B. large C. great D. bad( )15. A. sadly B. happily C. politely D. angrilymunication (每小题2分)Complete the dialogue with proper words or sentences.Dick: Excuse me, Lucy. Have you hot a dictionary?Lucy: Sorry, I haven’t. You may ask Meimei.1___________________________.Dick: Excuse me, Meimei. Have you got a dictionary?Meimei: Yes. 2. _____________________________.Dick: Thank you. I’ll give it back soon. By the way, tomorrow is my birthday. 3.________________?Meimei: Yes, I’d love to. 4._____________________?Dick: About seven o’ clockMeimei: I’ll try to be there on time, but 5 _____________________.Dick: It doesn’t matter. Work must come first.IV. Reading comprehension ,Mr. Smith’s friend lived in a place in the country. He asked Mr. Smith to go over and stay with him for a week. When he got to the house, Mr. Smith wanted to open his bag and take out his things. But suddenly he found that he had no key. “How foolish I am! Now I must go back to the city to get the key,” he said sadly.“Don’t worry,” his friend said. “I’ll call somebody to help you open your bag. But ne xt time don’t forget your key! Now let’s have lunch and after lunch you must liedown and have a rest. Your bed is in the next room. ”A month later, when he went to stay with his friend again, Mr. Smith didn’t forget the key. On the way to his friend’s house ,he thought ,“This visit will give me a chance to show him that I don’t always forget things! ”When his friend met him, Mr. Smith said proundly, “Look here! I have the key !”And where is your bag?He had no bag in his hand.Fill in the blanks according to the passage. Only one word for each blank.Mr. Smith’s friend lived in the country. He invited Mr. Smith to stay with him for a week. When he reached the house, Mr. Smith wanted to open his bag. But suddenly he found that he had 1 his key. He wanted to 2 home to get it. His friend said he would get someone to help open the bag. A month later, when he went to stay with his friend again, Mr. Smith 3 the key. On his way he thought he could show his friend that he also had a good 4 . When his friend met him, Mr. Smith said he had the key proudly. But this time he left his bag 5 .2Topic1参考答案stand /improve / protect the environment 忍受/改善/保护环境produce terrible gas 产生难闻的气味in a good / bad mood 情绪好/差be harmful to sb. / sth. 对某人/某物有害the look of our cities 城市面貌at present 目前shout at sb. 对某人大喊大叫;斥责某人disturb others 打扰别人in noisy conditions 在吵杂的条件下become deaf 变聋了quite a few 相当少no better than (几乎)与……一样差cause high blood pressure 引发高血压in strong, changeable light 在强烈、易变的光线下一、单项选择.I. 1.A 根据答语判断,本题考查带有“for+一段时间”的完成时态。

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