The atmosphere______of certain gases mixed together in definite proportions.

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问题 The atmosphere______of certain gases mixed together in definite proportions.

选项 A、composes
B、comprises
C、consists
D、constitutes

答案C

解析 consist of由……组成(或构成)(作此意解时该短语只有主动态，没有被动态，不能说be consisted(of)。compose vt．(若干部分)构成(整体)(其被动态be composed of与consist of同义)。comprise vt．包括，包含，由……组成；组成，构成(该词相当于compose和be composed of两个意思)。constitute vt．组成，构成，形成。

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考博英语

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The atmosphere______of certain gases mixed together in definite proportions.

考博英语

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CrossingWesleyanUniversity’scampususuallyrequireswalkingovercolorfulmessageschalkedontheground.Theycanbeasinno

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PresidentBushwarnedCongressonWednesdaythatinactiononhispushto_____SocialSecuritycouldbreedpoliticalrepercussions

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