Unit 6 The Unexplained Lesson 17 True Stories?(第一课时含答案)

Lesson 17　True Stories (第一课时)
Ⅰ. 英汉互译
1. 走开 　　　　　　　
2. 制造噪声 　　　　　　　
3. 朝某人扔某物 　　　　　　　
4. 过了一会儿 　　　　　　　
5. 照相 　　　　　　　
6. get scared 　　　　　　　
7. come up 　　　　　　　
8. know about 　　　　　　　
9. take out 　　　　　　　
10. on the other side 　　　　　　　
Ⅱ.用括号中所给单词的适当形式填空
11. He opened the door 　　　　(slow).
12. I am afraid of the 　　　　(hair) animals.
13. The boy got 　　　　(scare) when he saw the snake.
14. We enjoy 　　　　(dive) under the sea.
15. Every coin has two 　　　　(side).
16. There are many 　　　　(imagine) things in this movie.
17. It’s 　　　　(danger) for kids to go boating alone.
18. After taking the medicine, she felt a bit 　　　　(well) and could speak.
19. We should brush our 　　　　(tooth) twice a day.
Ⅲ. 单项填空
(　　)20. There are a lot of trees on both 　　　　of the street.
A. tops B. bottoms
C. sides D. opposites
(　　)21. It is raining 　　　　. Let’s put on our raincoats and go out, Tom.
A. beside B. outside
C. inside D. besides
(　　)22. There are many restaurants in our city. And most of 　　　　are clean and cheap.
A. us B. we
C. them D. they
(　　)23. —Why are the sunflowers always 　　　　the sun
—Sorry, I don’t know.
A. for B. down
C. above D. toward
(　　)24. It’s our duty to keep the classroom clean. Please don’t 　　　　rubbish everywhere.
A. catch B. put
C. throw D. carry
(　　)25. We should talk 　　　　in public places. It’s very impolite to shout.
A. loudly B. quietly
C. slowly D. quickly
(　　)26. It’s a good habit to read in the library. There are many kinds of magazines and 　　　　.
A. footballs B. desks
C. bookshelves D. newspapers
(　　)27. Bob is about 　　　　. He is the tallest in our class.
A. 1. 8-metre-tall B. 1. 8-metres-tall
C. 1. 8 metre tall D. 1. 8 metres tall
(　　)28. Don’t make any 　　　　when you are in the library.
A. sounds B. voices
C. noises D. songs
(　　)29. Don’t walk 　　　　the street when the traffic lights are red. It’s very dangerous.
A. cross B. across
C. over D. crossing
Ⅳ. 阅读理解
　　The zebra is a kind of animal that comes from Africa. They can be seen in almost all the zoos around the world. Many people like them because of their black and white stripes(条纹).
For a long time, scientists have been trying to find out why zebras have stripes and the use of these black and white stripes. But no one can give an exact answer.
The early scientists thought these black and white stripes could help them avoid being caught and eaten by tigers, lions and other animals. Because as they run, it’s difficult for other animals to estimate(估计) their speed and direction.
But is it true Scientists from England have been taking a much closer look. They have been testing the idea using a game called Dazzle Bug. That’s where you have to catch a bug, but it keeps changing its pattern(图案) in an effort to stop you doing so. What the scientists have found is that even when they are moving, the bugs still lose their clear patterns.
So scientists believe that how zebras protect themselves while moving may depend on a completely different mechanism(机制). No one knows how to explain the stripes on a zebra. But while the results may raise more questions than they answer, it does tell the idea that even for scientists, nature is a moving goal.
(　　)30. What do scientists want to know
A. Zebras’ living conditions.
B. The mystery behind zebras’ stripes.
C. The best ways to protect zebras.
D. Zebras’ living habits.
(　　)31. Which of the following is the early scientists’ idea
A. Stripes can protect zebras.
B. Stripes can help zebras run faster.
C. Stripes can help zebras estimate directions.
D. It’s difficult for zebras to lose stripes.
(　　)32. What’s the result of the test that scientists in England have taken
A. The bugs can lose their patterns but zebras can’t.
B. The bugs can avoid being caught while moving.
C. The early scientists’ idea may be wrong.
D. The stripes can help zebras run away easily.
(　　)33. What can we know from the passage
A. Scientists have known how zebras protect themselves.
B. No one can tell the mystery of zebras’ stripes exactly.
C. A completely different mechanism can be used to study zebras.
D. The early scientists knew more about zebras.
(　　)34. What does the underlined sentence in the last paragraph mean
A. Scientists can know more about nature as it is changing.
B. Scientists are good at studying moving things in nature.
C. It’s easier for scientists to know about nature.
D. Even for scientists, nature is always full of mysteries.
Ⅴ. 阅读短文,根据短文内容回答问题
One day, a baby snail(蜗牛) found that he had to carry a big and heavy shell(壳) at any time. He was confused(困惑的), so he went up to his mother and asked, “Why was I born with a shell that grew so hard and heavy ” His mother said, “Because we don’t have bones(骨头) to hold us up. We can only move slowly, so we need a shell to protect us. ”
The baby snail asked again, “The caterpillar(毛毛虫) has no bones, either, and she can’t move quickly. Why can she live without a shell ” The mother snail answered, “That’s because a caterpillar will become a butterfly. She can fly high into the sky. The sky can protect her. ”
The baby snail had one more question, “But the earthworm(蚯蚓) moves like us. He has no bones and he won’t turn into a butterfly. Why doesn’t he carry a hard and heavy shell ” His mother said, “He can dig a hole and hide in the ground, and then the earth can protect him. ”
The baby snail then cried, “We are so poor! We have no protection from the sky or from the ground!” His mother smiled at him, “That’s why we have a shell. My dear, imagine that if we don’t have the shells, what will happen to us Hot sun will dry out our bodies and we’ll have nowhere to sleep. What’s worse, we’ll die in the heavy rain. How terrible it is! We don’t depend on the sky or the ground for protection. We should depend on ourselves. ”
35. Whom did the baby snail ask for help, his mother or father
36. What will the caterpillar in the story become when she grows up
37. Where can an earthworm hide
38. How many questions did the baby snail ask
39. Who should the snails depend on according to the story
教师详解详析
Lesson 17　True Stories (第一课时)
Ⅰ. 1. walk away　2. make noise(s)
3. throw sth at sb　4. after a while
5. take photos　6. 害怕起来　7. 出现　
8. 知道,了解　9. 拿出,取出　
10. 在另一边
Ⅱ. 11. slowly　12. hairy　13. scared　
14. diving　15. sides　16. imaginary
17. dangerous　18. better　19. teeth
Ⅲ. 20. C　句意为“在街道的两边有许多的树”。
21. B　考查副词辨析。下句的“穿上雨衣出去”提示用副词outside,表示“外面”,符合句意“外面正下着雨”。故选B。
22. C
23. D　问句句意为“为什么向日葵总是朝着太阳 ”toward意为“朝,向,接近”。
24. C　根据第一句句意“保持教室的干净是我们的职责”可知第二句句意为“请不要到处扔垃圾”。
25. B　loudly意为“大声地”; quietly意为“轻声地”; slowly意为“缓慢地”; quickly意为“快速地”。结合本题语境可推断,我们在公共场合应该“轻声地”说话,大喊大叫是不礼貌的,故所缺的词是quietly。故选B。
26. D　根据第一句句意“在图书馆里阅读是一个好习惯”可知第二句句意为“这儿有许多种类的杂志和报纸”。
27. D　28. C　
29. B　walk across相当于cross,表示“穿过,横过”。
Ⅳ. 【主旨大意】 很长一段时间以来,科学家们一直试图弄明白斑马的身上为什么有黑白条纹,以及这种条纹是如何帮助它们抵御掠食者的袭击的。早期的科学家给出了答案,但现在科学家们发现,斑马可能依赖一种完全不同的机制保护自己。
30. B　细节理解题。由文章第二段中的“For a long time, scientists have been trying to find out why zebras have stripes and the use of these black and white stripes. ”可知,科学家们一直想弄明白斑马为什么有条纹以及这些黑白条纹的作用,即科学家们想弄明白斑马条纹的奥秘。
31. A　细节理解题。根据第三段中的“The early scientists thought these black and white stripes could help them avoid being caught and eaten by tigers, lions and other animals. ”可知,早期科学家认为条纹能保护斑马。
32. C　推理判断题。根据第四段中的“What the scientists have found is that even when they are moving, the bugs still lose their clear patterns. ”可推断出,条纹并不保护斑马,所以早期科学家的结论可能是错误的。
33. B　细节理解题。由最后一段中的“No one knows how to explain the stripes on a zebra. ”可知,没有人确切知道斑马条纹的奥秘。
34. D　推理判断题。根据文章最后一段可知,科学家们虽然发现早期科学家们的理论不一定正确,但他们并不能确切解释斑马条纹的奥秘,所以,对科学家们来说,大自然总是充满了奥秘。
Ⅴ. 35. He asked his mother for help. /His mother.
36. The caterpillar/She will become a butterfly. /A butterfly.
37. He can hide in the ground. /In the ground.
38. He/The baby snail asked three/3 questions. /3. /Three.
39. They should depend on themselves. /Themselves.