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1、Unit 4 Problems and advice课前检测语法选择（共10小题；每小题2分，满分20分） It can be dangerous _11_ by sea. Ships sometimes sink far away from land. When this happens, the sailors have to get into small boats. If another ship does not come and help them and they do not have enough food or water, they _12_. Most people b
2、elieve we must not drink sea water. They believe that if we _13_ we shall be very ill _14_ all the salt in the water. A doctor called Alain Bombard did not believe this. He thought that people could stay alive by _15_ small fish, animal and plants from the sea. On 19th October 1953, he set out in a
3、small boat to _16_ the Atlantic Ocean(大西洋). He did not take any food _17_ water with him. Every day Dr. Bombard drank just a little sea water. He also caught fish and they had water in them. He drank this water. He could not cook the fish, so he ate them as they were. He took small plants from the s
4、ea, _18_ gave him more food. Dr. Bombard became hot, tired and quite ill, but after 65 days at sea, he was still alive. He travelled 2750 miles from one side of the Atlantic ocean to the other, and on 24th December 1953, he _19_ Barbados.He lost 20 kilos, but he showed that people could live _20_ se
5、a water and the animals and plants in the sea.11. A. travel B. to travel C. travelled D. to travelling12. A. are dead B. die C. died D. will die13. A. do B. did C. have done D. will do14. A. because B. as C. for D. because of15. A. drink sea water and eatB. to drink sea water and to eat C. drinking
6、sea water and eating D. drinking sea water and eat 16. A. across B. crossing C. cross D. through 17. A. and B. or C. but D. nor18. A. that B. which C. those D. what19. A. arrived B. got C. reached D. arrived to20. A. on B. about C. by D. in完形填空（共10小题；每小题2分，满分20分） There are mind reading skills that a
7、re helpful to anyone. _21_ peoples thoughts or feelings has a lot to do with body language, because the mind can _22_ the body what to do and how it should do it.A persons eyes can show you a lot. If a persons pupils get bigger (unless the room is dark), then you can know that he or she is intereste
8、d or afraid. If the pupils get smaller (unless the room is bright), then the person is not interested. Practice reading _23_ by studying your own pupils in front of a mirror. _24_ something you like and watch how your pupils change.When you are at a meeting and you see somebody with _25_ arms, it pr
9、obably means this person is closing himself or herself from the rest of the group. He or she might be _26_ with what is being discussed. In this situation, perhaps you can _27_ this person a drink, ask him about his opinion, or change the meeting to a _28_ topic.Mind reading skills are _29_ in most
10、situations. Though you dont know what the person is thinking _30_, you at least have an idea of whats going on in that persons mind. 21. A. Thinking B. ReadingC. SeeingD. Watching 22. A. tellB. showC. askD. hear23. A. mouthB. headsC. eyesD. hands24. A. TakeB. EatC. Hear of D. Think of25. A. openB. c
11、rossedC. crossingD. closed26. A. uncomfortableB. comfortableC. impoliteD. polite27. A. needB. offerC. requireD. want28. A. sameB. difficultC. different D. easy29. A. harmfulB. friendlyC. frequent D. essential30. A. exactlyB. trulyC. cheerfully D. rapidly阅读理解（共5小题；每小题2分，满分10分）Animals do many differen
12、t, amazing things to get through the winter. Some of them migrate. They travel to other places where the weather is warmer or where they can find food.Many birds migrate in autumn. Because the trip can be dangerous, some travel in large groups. For example, geese fly in noisy, “V”-shaped groups. Som
13、e other kinds of birds fly alone.Some animals stay active in winter. They must change themselves as the weather changes. Many change their behaviors or their bodies. For example, a kind of rabbits called snowshoe rabbits grow white fur to help them hide in the snow.Food is hard to find in winter. So
14、me animals, like mice, collect lots of food in autumn and store it to eat later. Some animals eat different kinds of food as the seasons change.Some animals hibernate for part or all of the winter. This is a special, very deep sleep. The animals body temperature drops, and its heartbeat and breathin
15、g slow down. It uses very little energy. In autumn, these animals get ready for winter by eating much more food than in summer and storing it as body fat. They use this fat to keep them alive while hibernating.Water makes good protection for many animals. When the weather gets cold, they move to the bottom of lakes and rivers. There, frogs and many fish hide under roc
