In the experiment on rats, a sweet smell was added to the rats’ drinking water to      .

试卷相关题目

• 1The government of China is trying to reduce ______.

  A.only the air pollution

  B.only the air and water pollution

  C.only the water pollution

  D.the air, water and noise pollution

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• 210 percent of the workers in Britain are being deafened because _______ .

  A.they are working in noisy places

  B.they often listen to pop music

  C.they live near airports

  D.they are too busy to listen to others’talk

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• 3According to the passage, a continuous noise of _______decibels can make people deaf.

  A.less than 85

  B.less than 65

  C.about 65

  D.more than 85

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• 4The passage is mainly about ______ .

  A.air pollution

  B.water pollution

  C.noise pollution

  D.world pollution

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• 5What can we learn from the story、

  A.Think twice before you make a judgment.

  B.Blustering is a poor father and husband.

  C.Blustering would rather live alone than be considered a thief.

  D.Blustering is an example we should learn from.

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• 6Talking about eating habits, babies and rats are just like each other because        .

  A.both have the wisdom to choose a balanced diet

  B.both prefer flavored food and drink

  C.both have the same eating habits

  D.both develop a taste for the same kinds of flavors

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• 7In the experiment mentioned in the second paragraph, babies were      .

  A.given many choices of drinks

  B.given all kinds of baby food

  C.placed and fed in a hospital

  D.trained to select a balanced diet

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• 8According to the passage, grown-up people’s eating habits differ from those of babies in that    _______ .

  A.they know better than babies what kinds of food are good for their health

  B.they usually cannot say no to all kinds of delicious foods

  C.their eating habits have much to do with the social and cultural customs (文化习俗)

  D.they have more choices of food than babies in eating patterns

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• 9According to the advertisements, the four books are all intended for ________.

  A.teachers

  B.adults

  C.children

  D.women

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• 10Some of the four books were illustrated in order to _________.

  A.help readers understand the book

  B.persuade readers to buy them

  C.reduce the cost of the books

  D.make the books suitable to different readers

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