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1、必修一 Unit 1 Friendship reading 课时作业第一节语法填空Researchers from the University of Michigan have found that astronauts brains change shape during spaceflight. It is the first study 1 (look) into how the brain changes in space. Researchers looked at high-tech MRI (磁共振成像)pictures of the brains of 6 astronaut
2、s 2 spent time in space. Twelve of the 3 (astronaut) spent two weeks on the Space Shuttle, and 14 spent six months on the International Space Station. All of them 4 (experience) increases and decreases in the size of 5 (differ) parts of the brain. The longer an astronaut spent in space, the 6 (big)
3、the size differences were.The research produced some interesting findings. One was that on gravity means fluids do not drop in the body, 7 there is a shift in the brains position inside the skull. The brain becomes either smaller or bigger. The findings could help doctors to treat problems that affe
4、ct the brains function. They could treat people with problems 8 (cause) by long-term bed rest. They could also help those who have a build-up of fluid in the brain, which can lead 9 brain damage. We will understand more about 10neurons (神经元)in the brain connect. The findingswill also help future tri
5、ps to Mars.【参考答案】1. to look 2. who 3. astronauts 4. experienced 5. different 6. bigger 7. so 8. caused 9. to1(). how第二节：完形填空请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最 正确选项，并在答题卡上将该项涂黑。A boy was walking home from school when he saw a large, tempting (诱人的) apple on one of the branches of an apple tree hangin
6、g out over a tall fence. The boy wasnt much of a fruit-eater, J a bar of chocolate if given the choice, 2,as they say, the forbidden fruit can be tempting. Seeing the apple, the boy wanted it. The more he looked at it, the 3 he felt and the more he wanted that apple.He stood on tiptoe(脚尖)， 4 as high
7、 as he could , but even as his tallest _5 he was unable to touch it. He began to 6 up and down , as high as he could, at the 7 of each jump stretching his arms to get the apple. Still it remained out of 8 .Not giving up , he thought, if only he had something to 9 on . His school bag wouldnt give eno
8、ugh height and he didnt want to 1() the things inside , like his lunch box , pencil case , and Gameboy. Looking jj, he hoped he might find an old box , a rock , or ,12 luck , even a ladder , but it was a tidy neighborhood andthere was nothing he could use .He had tried everything he could think to d
9、o. 13 seeing any other choices , he gave up and started to walk 14 . At first he felt angry and disappointed thinking about how hungry he had become from his J 5, and how he really wanted that apple. The more he 16 like this , the more unhappy he became.17 ,the boy of our story was a pretty smart gu
10、y, even if he couldnt always get what he wanted . He started to say to himself. This isnt 18. I dont have the apple and Im feeling miserable as well. Theres 19 more I can do to get the applethat is unchangcablc-but we arc supposed to be able to 20 our feelings. If thats the case, what can I do to fe
11、el better?1. A. preferringB. offeringC.receivingD. allowing2. A. soB. thenC.butD. or3. A. sadderB. angrierC. hungrierD. tastier4. A. expandingB. stretchingC.swingingD. pulling5. A. strengthB. lengthC.rangeD. height6. A. jumpB. lookC.walkD. glance7. A. tipB. stageC.topD. level8. A. hopeB. handC.sight
12、D. reach9. A. putB. standC.getD. hold10. A. breakB. shakeC.takeD. strike11. A. upB. forwardC.downD. around12. A. forB. withC.onD. of13. A. AfterB.ThroughC.WithoutD.Upon14. A. backB.awayC.叩D.down15. A. wishesB.beliefsc.effortsD.goals16. A. thoughtB.imaginedc.triedD.claimed17. A. ThereforeB.Howeverc.M
13、oreoverD.Otherwise18. A. skilfulB.cheerfulc.harmfulD.helpful19. A. somethingB.anythingc.everythingD.nothing20. A. changeB.expressc.forgetD.describe【参考答案】1. A2. C3. C4. B5.D6. A7. C8.D9. B 10. All.D 12. B13. C 14. B15. C 16. A 17. B18. D 19. D20. A第三节单句话法填空.he once felt like giving up, he now has the
14、 determination to push further and keep on going.1 .scientists have learned a lot about the universe, there is much we still dont know.3. the damage is done, it will take many years for the farmland to recover.4. It is so cold that you cant go outside fully covered in thick clothes.5. I really enjoy
15、 listening to music it helps me relax and takes my mind awayfrom other cares of the day.6. some people are motivated by a need for success, others are motivated by a fear of failure.7. If you dont understand something, you may research, study, and talk to other people you figure it out.8. Peter, ple
16、ase send us postcards weH know where you have visited.9. No sooner had he arrived/He had no sooner arrived she started complaining.10. Try he would, he couldnl lift the heavy box.【参考答案】1 Where 2. Though 3 Once 4 unless 5 because 6 While 7 until 8 so 9 when 10 as第四节七选五阅读下面短文，从短文后的选项中，选出可以填入空白处的最正确选项。
17、选项中 有两项为多余选项。Childhood has changed,and so has childrens future.When I was a kid,we were out and about all the time,playing with ourfriends in and out ofeach others houses. 1 . This is what you will hear if you ask anyone over 30 about theirchildhood in a rich country.2 . They often play with adults
18、rather than with siblings（兄弟姐妹or friends,and takepart in many organized activities probably for several hours every day. 3. Parents want toprotect their children from traffic,crime and other danger.They also want to give them everyopportunity to achieve success.Rich parents these days invesl（投资a lar
19、ge amount of time and money in their children tomake sure that they will do better than the parents themselves.Those endless extra math,physics,music lessons have proved very useful in securing the good grades.4.However,working-class parents in America lack the money to take up such parenting. 5 . N
20、otso long ago theAmerican dreamheld out the future that everyone,rich or poor,could succeed ifthey tried hard enough.But a recent report by the World Bank showed that the children from theworking-class families are unlikely to achieve great success.A.But today such children will spend most of their
21、time indoors.B.As a result,social gap from one generation to the next is set to widen.C.Many governments are offering extra help to children from disadvantaged backgrounds.D.Our parents hardly saw us from morning to night.E.And thats before many social effects of the new parenting gap have had time to show up.F.AI1 this is done with the best of intentions.G.And that will open the doors to lop universities and well-paid jobs.【七选五参考答案】1-5 DAFGB