2. 外语
  3. It is one thing to accuse a person of a certain crime, but ______.

It is one thing to accuse a person of a certain crime, but ______.

admin2013-04-08  122
问题 It is one thing to accuse a person of a certain crime, but ______.
选项 A、proving it is different
B、how to give proof is no easy
C、when to prove it is difficult
D、to prove it is quite another matter
答案D
解析 因为句中it是形式主语，真正的主语是不定式to accuse。由but引导的分句中需用不定式to prove做主语，与to accuse是平行结构。A、B和C项不能与前面to accuse构成平行结构，所以排除。
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大学英语四级

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