Scientists have always believed that snails are not able to find their way home. But Briton Ruth Brooks, a retired teacher, has found that it is not true.Brooks started working on snails after she got 题目和参考答案——青夏教育精英家教网—

题目内容

Scientists have always believed that snails are not able to find their way home. But Briton Ruth Brooks, a retired teacher, has found that it is not true.

Brooks started working on snails after she got angry with the snails in her garden. The snails ate her vegetables. She didn't want to kill them, so she took them to another place. But she found they always seemed to come back. Brooks tried to mark the snails in her garden with nail polish (指甲油). She placed the snails in the place around her home and made notes of their movements. She found that snails have a strong homing instinct (本能); the longest returning snail traveled back 90 meters.

People started to call Brooks Britain's best amateur (业余的) scientist after her work won the BBC's prize “To Be A Scientist”. She said, “I've always wanted to know whether the snails that eat my plants just come back when I move them, and if they do, how far is it from their home?” "I would say on the evidence (证据) that it would be safe to take your snails away 100 meters or even farther. If you put them somewhere nice with some food, you can be almost sure that they won't come back."

1.What does the underlined word “it” in the first paragraph refer to?

A. The snails are in her garden. B. Ruth Brooks has a garden.

C. Snails have a strong homing instinct. D. Snails can't find their way home.

2.Why did Brooks take the snails to another place?

A. She wanted to kill them in a quiet place. B. She wanted to know about the snails' growth.

C. The snails ate her vegetables D. She is retired and has a lot of free time

3.She marked the snails to fiind out________.

A. which one ate her vegetables B. whether they could come back

C. which one would travel the farthest D. how many snails there were in her garden

4.According to Brooks, which of the following statements is TRUE?

A. Snails are good at finding their way home. B. Most of her snails traveled 90 meters

C. It's impossible to stop snails from coming home. D. Snails can travel anywhere and come back

5.What is Brooks' advice for keeping snails away?

A. You'd better kill them. B. Take them to scientists.

C. Mark them with nail polish. D. Move them to a nice place with food.

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完成短文:根据首字母提示填空，使短文完整正确。(每空限填一词) (共 10小题)

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