人教版八年级上Unit 3 Computers同步练习A卷.doc

人教版八年级上Unit 3 Computers同步练习A卷一、 单项选择 (共15题；共30分)1. （2分）This machine is easy to operate and maintain.A . makedirtyB . makecleanC . makework2. （2分）Will you buy the house?No. Its expensive. I cant afford it.A . not heavyB . not oldC . not cheap3. （2分）David is _ in his family. A . the tallerB . tallerC . the tallestD . tallest4. （2分）The Summer Palace is one of the parks in Beijing. A . best beautifulB . much beautifulC . most beautiful5. （2分）He is unaware of what happened.We must tell him all about it now.A . doesnt realizeB . has an idea ofC . doesnt agree6. （2分） Why dont you buy the computer? Its too . I cant afford it.A . expensiveB . patientC . helpful7. （2分）This bag is a little _ than that one. A . heavyB . more heavyC . heavierD . the heaviest8. （2分）Could you _ the letter for me, please?Sorry, my keyboard is broken. You have to ask someone else.A . watchB . readC . type9. （2分）Taking the underground in Shanghai is _ Than _ a taxi. A . more cheap; takingB . much cheaper; takingC . a little cheap; to take10. （2分）Thank you for _ us. I look forward to _ you again. A . helping; meetingB . to help; meetC . helping; meet11. （2分）The garden is becoming _. A . beautiful and beautifulB . more beautiful and beautifulC . beautifuler and beautifulerD . more and more beautiful12. （2分）Some young people always depend on their parents.They should learn to be independent.A . live withB . talk withC . need help from13. （2分）The _ of something is the rate at which it moves or travels.A . priceB . speedC . weight14. （2分）When you things, you consider them and discover the differences or similarities (相似点）between them.A . compareB . collectC . challenge15. （2分）These two books are in the same size, but this one is _ thicker. A . a littleB . veryC . quiteD . as二、 完形填空 (共1题；共10分)16. （10分）根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。The computer is fast, and never makes a mistake, while people are too1 and full of mistakes sometimes. Thats what people often say when they talk about computers. For over a quarter of a century, scientists have been2 better and better computers. Now a computer can do a lot of everyday3 wonderfully. It is4 used in factories, hospitals, post offices and airports. A computer can report, decide and control in almost every field. Many computer scientists are thinking of making the computer “think” like a man. With the5 of a person, a computer can draw pictures, write music, talk with people,6 chess, recognize voices, translate languages and so on. Perhaps computers will one day really think and feel. Do you think the people will be7 when they find that the computer is too clever to listen to and serve the people? No, people will make8 use of the computers in the future. Man is always the master of the computer. The computer9 only with the help of man. It cannot take the10 of man.（1）A . slow B . quick C . short （2）A . loving B . taking C . making （3）A . thoughts B . mistakes C . jobs （4）A . widely B . deeply C . hardly （5）A . question B . advice C . help （6）A . play B . serve C . sing （7）A . afraid B . happy C . rich （8）A . better B . faster C . worse （9）A . eats B . sleeps C . works （10）A . place B . prize C . price 三、 阅读理解 (共2题；共16分)17. （8分）根据短文内容，选择正确答案。EHave you ever seen a horse with toes? Millions of years ago, horses had many toes. They had four toes on each front foot. They had three toes on each back foot. The horses were no bigger than cats.These small horses lived in the forest. Their many toes helped the horses run over the soft, wet ground.It was very hot in the forest. But the weather changed. It became cold. Many trees could not live in cold weather. The trees died and fell. Open fields took the place of forests. The sun made ground dry and hard.Horses began to change, too. They began to get bigger. This took a long time. On the dry, hard land, horses needed only their middle toes for running. Their middle toes became hard. After a long while, horses had only one hard toe on each foot. We call this hard toe a hoof.（1）Long ago, the horse had toes on each of its front feet.A . fourB . threeC . oneD . two（2）Which of the following does this story lead you to believe?A . Animals have always been the same as they are today.B . When the earth changed, animals began to change, too.C . Weather stays the same all year long around the world.D . When the earth changed, animals didnt change.（3）What did the horses need on dry, hard land?A . On the dry, hard land, horses needed only their middle toes for running.B . On the dry, hard land, horses needed a lot of hoofs for running.C . On the dry, hard land, horses needed to get smaller.D . On the dry, hard land, horses needed nothing.（4）The main idea of the whole story is about .A . the weather never changesB . cats were once much bigger than horsesC . horses changed very much over the yearsD . horses have no toes today18. （8分）阅读理解 Tom? Are you in bed yet? called Mrs White. There was no answer. Mrs White put down her book and went to her 14-year-old sons room. Tom was sitting in front of a bright computer screen on which a motorbike was running fast.Oh, Tom. Youre still playing that computer game. You must stop now, because its half past eleven. If you dont go to bed soon, youll be very tired tomorrow, said Mrs White.But Ive nearly won the game, Tom said to Mrs White. She could see the excitement on his face. She sat beside him.Youre always playing on the computer. You spend more time on this machine than on your homework, said Mrs White.Today more and more families have computers. Parents hope computers can help their children improve their study at school But many of their children use computers to play games, listen to songs and watch videos instead of studying. We often see that computer net bars are crowded with people, especially young boys. They spend a lot of money competing(竞争) with the computerized(用机算机控制的)machines. The more they lose, the more they want to win The result is that they dont want to study.In some countries, even scientists hate computers. They say computers cause millions of people to lose their jobs or cause them a lot of trouble. Computer game addiction(瘾) is a serious problem in our social life. Something should be done to solve the problem.（1）How did Mrs White feel when she saw her son playing a computer game late? A . She felt excited.B . She felt happy.C . She felt worried.D . She felt wonderful.（2）Parents hope computers can _. A . help their children improve their study at schoolB . help their children play wellC . help their children know much Internet knowledgeD . help their children relax themselves（3）Many children use computers to _. A . watch videosB . listen to songsC . play gamesD . A, B and C（4）The writer thinks _. A . boys can go to the computer net bars, but girls cantB . computer net bars are very usefulC . children spend too much time on computer gamesD . children should play computer games四、 单词拼写 (共1题；共1分)19. （1分）I am u_ of the difficulties we a