From the fourth paragraph ,we can infer that      .

试卷相关题目

• 1What would be the best title for this passage、

  A.Plants and Animals

  B.How Plants Defend Themselves

  C.Attacks and Defenses

  D.How Animals Eat Plant Leaves

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• 2How does tobacco protect itself against an attack from a caterpillar、

  A.Its leaves fight against the attack by physical means.

  B.Its roots send a messenger to discourage the caterpillar.

  C.Its roots increase the production of nicotine when it is attacke

  D.D.Its leaves produce poisonous sand to drive the caterpillar away.

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• 3To defend themselves ,oak trees use        .

  A.chemical means

  B.physical means

  C.bitter chemicals

  D.sandy materials

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• 4The holly plant has more spines on the lower leaves because most animals      .

  A.are not tall enough

  B.like the lower leaves only

  C.are not clever enough

  D.can get the lower leaves easily

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• 5This passage mainly tells readers ___________.

  A.what happens on the opening day of the Sahara Festival

  B.how people celebrate during the three-day Sahara Festival

  C.what takes place at the closing ceremonies of the Sahara Festival

  D.how animals race on the first and the last days of the Sahara Festival

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• 6The underlined word “mingled” in the last paragraph most probably means    .

  A.simple

  B.mixed

  C.sad

  D.happy

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• 7What do you think the author is most likely to suggest if he continues to write、

  A.Further application of science to war.

  B.More reading of William Shakespeare.

  C.Proper use of science in the new century.

  D.Effective ways to separate the good from the ill.

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