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单选题 英语运用能力测试
2011-10-20

The pressure ________causes American to be energetic, but it also puts them trader a constant emotional strain.

A．to compete
B．competing
C．to be competed
D．having competed
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参考答案

A

答案解析

动词不定式作定语时，不定式置于被修饰的名词之后。A项与c项的差别在于语态，compete属不及物动词，不能构成被动形式。

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