Oxygen is one of the elements ______ water consists.

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问题 Oxygen is one of the elements ______ water consists.

选项 A、of which
B、of that
C、by which
D、that

答案A

解析 of which  本题考查定语从句,consist of 包含,包括,为固定搭配,介词后的关系词只能用which,所以A选项为正确答案。
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