Of the 500 million different species from living creatures that have appeared on earth, nearly 99 percent have vanished.

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问题 Of the 500 million different species from living creatures that have appeared on earth, nearly 99 percent have vanished.

选项 A、of
B、in
C、for
D、on

答案A

解析 本题重点考查常见介词的用法。画线部分的介词from表示“从……中”,但是从语义所属上来看,species应该是living creatures中的一部分,这里表示的是所属关系,因此使用from不如of准确。四个选项中从语义上首先可以排除C和D。B和画线部分是同样的错误,故选A,用of表示所属关系。
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