冀教版九年级英语上Unit5 Look into Science单元练习含答案.docx

1、冀教版九年级英语上Unit5 Look into Science单元练习含答案Unit5 Look into Science单元练习 一、单项选择 1. Father wont allow me to play outside I wash up the dishes. A. if not B. if C. unless D. because 2. Can you it? I didnt follow you just now. A. repeat B. remember C. reply D. report 3. - Oh no! What can I do with my computer

2、? - Press Enter and follow the on-screen(屏幕) . A. collection B. instructions C. education D. questions 4. I suggest next week. A. go mountain climbing B. will go mountain climbing C. to go mountain climbing D. going mountain climbing 5. This group is of seven men. A. made B. made up C. help with D.

3、connect with 6. the kid has no parents, his grandparents look after him well. A. As though; / B. As though; but C. Even though; / D. Even though; but 7. If you the book, youll find something surprising. A. turn down B. turn on C. turn off D. turn over 8. Betty went to the museum and saw many picture

4、s were drawn by a famous person. A. that B. who C. what D. whom 9. Ill remember the old buildings I visited in the village. A. where B. which C. who D. what10. - I want to find a partner to practice roller skating. - My friend Fred is a person may help you a lot. A. which B. whose C. who D. whom二、完形

5、填空 Technology has made life much easier for children today. It is 11 for them to play, to listen to music, and to 12 in touch with their friends. 13 the help of technology, there seems to be nothing that children cant do now. Technology also helps 14 to know more about their children. For example, i

6、f a child is given a mobile phone with a tracking(追踪) device, his parents can find out 15 he is going with the help of the mobile phone. However, there are also some bad 16 of technology. For example, it has become easier for bad people to get in touch with children with the help of technology. They

7、 can find personal information about children through special ways on the 17 . So it is very important for parents to 18 their children to keep personal information safe while surfing the Internet. Besides this, there is another bad thing about technology. Children now 19 less time doing exercise th

8、an before. They are too 20 playing online games. They can even play computer games all day long. If you dont push them out of the door, they wont volunteer to go out and play. This is not good for their health. Therefore, teaching children the right way to make good use of technology is very importa

9、nt.11. A. easier B. more difficult C. more important D. harder12. A. lose B. make C. keep D. contact13. A. For B. Under C. With D. Over14. A. teachers B. friends C. parents D. classmates15. A. when B. whom C. why D. where16. A. sides B. places C. choices D. winds17. A. phone B. TV C. radio D. Intern

10、et18. A. teach B. learn C. punish D. lend19. A. pay B. take C. cost D. spend20. A. lazy B. free C. busy D. hard-working三、阅读理解A What should you take in with you when you take an exam? Pen, pencil, eraser, ruler, and dont forget a bottle of water! According to a study at the British Psychological( 心理学

11、的) Society Annual Conference held in London, students who bring water into exams may improve their grades by up to 10 percent. Scientists at the University of East London and the University of Westminster, UK, did a study on 447 students. The students were studying for different degrees(学历) at the U

12、niversity of East London. Only 25 percent of them entered the exam hall with something to drink. Scientists then compared their exam results with their normal schoolwork grades. They found that all those who had brought drinks with them got better grades by between 2 and 10 percent. It is unclear wh

13、y drinking water improves exam results. But scientists say having enough water in our bodies and not feeling thirsty could have a helpful effect on our brains. Drinking water may also cut down on anxiety(焦虑), which has a bad effect on exam performances, according to Chris Pawson, PhD, of the Univers

14、ity of East London. Whatever the explanation, it is clear that students should try hard to stay hydrated(含水的) with water during exams, he said. So next time, when you are going to have a big exam, try bringing a bottle of water with you. Who knowsit may help you pass the exam!21. How much may the st

15、udents improve their grades most if they bring water into exams? A. By 2%. B. By 8%. C. By 10%. D. By 25%.22. How many students in the study got better grades? A. About 112 students who brought drinks or water into their exams. B. All the 447 students who come from the University of East London. C.

16、About 300 students who took part in the study. D. About 10 percent of the students who studied different subjects.23. The underlined phrase cut down on probably means . A. increase B. bring C. reduce D. change24. According to the passage, how does water help students in exams?a. It is good for their

17、 brains.b. It makes students smarter.c. It helps students stay cool.d. It helps students stay awake. A. a b B. a c C. b c D. c d25. Where can you probably read the article? A. Fashion magazine. B. Text book. C. Travel guide. D. Newspaper.B Have you ever rubbed your hands together when they get cold?

18、 Why do we do that? We do that for friction. Friction happens when two things that arent very smooth rub together to make heat energy. The faster you rub two things together, the more friction (and heat) you can make. Lets discover friction! WHAT YOULL NEED: Soap Water Your hands! WHAT TO DO: Make s

19、ure your hands are dirty. Rub your hands together until you feel the heat of your hands. Now, use soap and water to get your hands very slippery(滑的). Try to make friction happen while your hands are slippery. Please write down what has happened. LETS TALK! Friction is an energy that happens when two

20、 things tub together. When friction happens, it makes heat! When your hands are slippery, they wont make very much friction and your hands wont get so hot. DID YOU KNOW? Friction happens when you stop your fast running bike. Ancient people made fires by rubbing two pieces of wood together. Friction

21、happened though they didnt know it. Friction is everywhere. Have you ever noticed situations where friction is happening? If not, ask your parents to take you out in a car. If it is not hot, touch the tires(轮胎) of the car before and after a short drive to see how much warmer they get from friction.2

22、6. This text is most probably . A. a science report B. a car advertisement C. a rubbing introduction D. a chemistry programme27. Youd better make your hands to get heat when you rub them. A. slippery B. dry C. wet D. smooth28. What does the word friction in this text mean in Chinese? A. 摩擦 B. 冷却 C.

23、膨胀 D. 震动29. is not an example of friction. A. Bike riding B. Car driving C. Hands rubbing D. Friction discovering30. Whats the last column(栏目)? A. THINK IT OVER! B. WHAT HAPPENED? C. EVERYDAY ACTION D. WORK WITH PARENTSC We often praise the world of science. It explains the world and makes our lives

24、 easier with technology. One of the most exciting fields in science is artificial intelligence (人工智能,AI). This is an area where scientists are working on creating machines that think like humans. However, one of the most famous scientists has a very dark warning for us about this type of technology.

25、 The development of full artificial intelligence could spell the end of the human race, said Professor Stephen Hawking to the BBC. Hawking is a well-known British physicist and author of bestselling science book A Brief History of Time. This warning came after commenting(评论) the technology he uses t

26、o speak with. As Hawking has got a serious disease called ALS, he needs an AI computer to communicate. The computer learns how Hawking thinks and suggests the words he may want to use next. This is a basic type of AI, which is very useful, yet Hawking fears the possibility of creating technology tha

27、t can match or surpass human intelligence. And its easy to imagine how terrible things may be. Many TV shows and films show big, killer machines that are far cleverer than us. Humans, who are limited(限制) by slow biological evolution(进化), couldnt compete, said Hawking. But not every scientist is pess

28、imistic(悲观的) about AI technology. I believe we will be in control of the technology for a long time, said Rollo Carpenter, creator of Cleverbot in the UK, which is a software program that remembers past conversations, The advantages of it to solve many of the world problems will be realized. In what

29、 direction do you think AI is heading? Should we be hopeful or fearful?31. Which of the following is TRUE about AI? A. It makes our lives easier. B. The technology is not very popular now. C. Scientists havent controlled the technology.32. The writer took Hawking as an example to . A. explain how AI

30、 has helped us B. show AI has already become part of our life C. suggest that AI might become dangerous for humans33. What does the underlined word surpass mean in the passage? A. 象征 B. 促进 C. 超越34. We can know from the last paragraph that . A. Rollo agrees with Hawking B. Rollo is a British creator

31、C. Rollo invented Cleverbot in the US35. Which of the following can be a suitable title for this article? A. AI: A Friend or an Enemy B. The Future of Human Beings C. The Fight Between Humans and AID DNA is the whole map of the human body. It is something that all humans have, and it tells the body what to do. DNA is the reason that we look like our parents, because we get some of their DNA to make our own. People have been trying to understand the human body for a long time. In I860, Mr Mendel discovered why we look the same as other people in our family. It is because of small things