Every field of chemistry______different chemical reactions.A、holdsB、consistsC、

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问题 Every field of chemistry______different chemical reactions.

选项 A、holds
B、consists
C、composes
D、involves

答案 D

解析本题考查的是动词辨析。hold意为“持有，容纳”；consist of意为“由…构成”：com—pose意为“组成”，常用作被动，固定搭配；be composed of意为“由…构成”；involve意为“涉及，包括”。故选D。

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