Fossil records indicate ______existing in the past have become extinct.A、that ma

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问题 Fossil records indicate ______existing in the past have become extinct.

选项 A、that many species of organisms
B、many species of organisms that
C、many species of organisms are
D、there are many organisms

答案 A

解析句子结构题。本句的第一层次是一个宾语从句，即fossil records indicate that…；宾语从句中的谓语动词是have become，主语是many species of organisms，existing in the past是主语的定语，其他选项均不符合语法。

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