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    Some plants can take in carbon dioxide we breathe out and give ______ oxygen to us.

       A. in case               B. in turn              C. in return        D. in addition

     

    【答案】

    C

    【解析】介词短语辨析。A以防；B依次，轮流；反过来；C作为回报；D另外；结合句意可知C正确。句意：一些植物能够吸收我们呼出的二氧化碳，作为回报并给我们氧气。

     

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    完形填空(Cloze Test)

    　　Many of our traditional medicines come from plants that grow wild throughout the world．Folk medicine keeps the health of the body by using medicines taken from surrounding plants since 　　1　　 for making medicine can be 　　2　　 everywhere, one can 　　3　　 folk medicine in any place of the world．They provide the basic ingredients(成分)that were used in the preparation of medicines and remedies(治疗方法)．

    　　The practice of folk medicine 　　4　　 all the way back to the time of early man when both man and animal used plants in order to 　　5　　 healthy．It is not 　　6　　, for example, to see an animal suck the sap of some plant after being 　　7　　 by a poisonous snake．　　8　　 animals seem to have their 　　9　　 gift for knowing which plant will 　　10　　 what illness, man probably learned how to 　　11　　 for himself by animal watching．

    　　Man 　　12　　 learned other things from animals．He observed that wild animals when sick remained quiet and rest, depending upon nature's remedies(治疗方法)for 　　13　　 well－the medicine in plants and pure air．He saw that an animal with a 　　14　　 could often be 　　15　　 resting in a cool place, eating nothing and often drinking a lot until the fever was gone．

    (1)
    [　　]

    A．

    material

    B．

    liquids

    C．

    chemistry

    D．

    vapour

    (2)
    [　　]

    A．

    uncovered

    B．

    made

    C．

    found

    D．

    produced

    (3)
    [　　]

    A．

    do

    B．

    get

    C．

    complete

    D．

    practice

    (4)
    [　　]

    A．

    comes

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    goes

    C．

    reaches

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    keeps

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    A．

    have

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    remain

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    continue with

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    [　　]

    A．

    usual

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    uncommon

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    comfortable

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    easy

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    [　　]

    A．

    hurt

    B．

    wounded

    C．

    eaten

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    damaged

    (8)
    [　　]

    A．

    Unless

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    However

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    Because

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    [　　]

    A．

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    A．

    cure

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    develop

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    raise

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    cause

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    A．

    wait

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    think

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    long

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    [　　]

    A．

    almost

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    mainly

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    also

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    hardly

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    A．

    growing

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    getting

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    turning

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    becoming

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    A．

    disease

    B．

    wound

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    fever

    D．

    cold

    (15)
    [　　]

    A．

    watched

    B．

    found

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    stared

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    uncovered

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