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    It is reported that the United States uses    energy as the whole of Europe.

    A．as twice           B．twice much        C．twice much as much D．twice as much

     

    【答案】

    D

    【解析】

    试题分析：形容词原级as…as的前面可以用表示倍数的词twice，意思是“是……的多少倍”，故选D。

    考点：as…as用法的考查

    点评：as…as其基本意思为“与…一样”，其中的第一个as为副词，其后通常接形容词或副词(用原级)，第二个as可用作介词(后接名词或代词)或连词(后接从句)。使用时应注意该结构根据情况可用使用以下修饰(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等，并且这些修饰语必须置于第一个as之前，而不能置于其后。

     

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    　　Number sense is not the ability to count．It is the ability to recognize a 　　1　　 in number．Human beings are born with this ability．　　2　　, experiments show that many animals are, too．For example, many birds have good number sense．If a nest has four eggs and you remove one, the bird will not 　　3　　．However, if you remove two, the bird 　　4　　 leaves．This means that the bird knows the 　　5　　 between two and three．

    　　Another interesting experiment showed a bird's 　　6　　 number sense．A man was trying to take a photo of a crow(乌鸦)that had a nest in a tower, but the crow always left when she saw him coming．The bird did not 　　7　　 until the man left the tower．The man had an 　　8　　．He took another man with him to the tower．One man left and the other stayed, but they did not 　　9　　 the bird．The crow stayed away until the second man left, too．The experiment was 　　10　　 with three men and then with four men．But the crow did not return to the nest until all the men were 　　11　　．It was not until five men went into the tower and only four left that they were 　　12　　 able to fool the crow．

    　　How good is a human's number sense? It's not very good．For example, babies about fourteen months old almost always notice if something is taken away from a 　　13　　 group．But when the number goes beyond three or four, the children are 　　14　　 fooled．

    　　It seems that number sense is something we have in common with many animals in this world, and that our human 　　15　　 is not much better than a crow's．

    (1)
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    B．

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    sincerely

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    [　　]

    A．

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    different

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    A．

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    B．

    annoying

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    satisfying

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    hurt

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    catch

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    A．

    repo

    B．

    repeated

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    designed

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    approved

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    [　　]

    A．

    confused

    B．

    gone

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    tired

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    drunk

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    gradually

    B．

    luckily

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    A．

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    Number　 sense is not the ability to count. It is the ability to recognize a 　 1　 in number. Human beings are born with this ability. 2 ，experiments show that many animals are, too. For example, many birds have good number sense. If a nest has four eggs and you remove one, the bird will not　 3 . However, if you remove two, the bird 4 leaves. This means that the bird knows the 　5　 between two and three.

    Another interesting experiment showed a bird's 6 number sense. A man was trying to take a photo of a crow(乌鸦)that had a nest in a tower, but the crow always left when she saw him coming. The bird did not 7 until the man left the tower. The man had an 8 .He took another man with him to the tower. One man left and the other stayed, but they did not 9 the bird. The crow stayed away until the second man left, too. The experiment was　 10 with three men and then with four men. But the crow did not return to the nest until all the men were 11 .It was not until five men went into the tower and only four left that they were 12 able to fool the crow.

    How good is a human's number sense? It's not very good. For example, babies about fourteen months old almost always notice if something is taken away from a 　13 group. But when the number goes beyond three or four, the children are 14　 fooled.

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    14. A. seldom　　　　　　　 B. temporarily C. merely　　　 D. often

    15. A. sight　　　　　　　　　 B. nature　　　 C. ability　　　　 D. belief

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