_A container weighs more after air is put in, proves that air has weight.A. asB. itC. that

发布时间：2020-08-17 14:41:40

_A container weighs more after air is put in,     proves that air has weight.
A. as
B. it
C. that
D. which

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A. as
B. it
C. that
(答案→)D. which
解析：考查连词。which 引导非限制性定语从句，修饰整个主句的内容，这时不能用that。
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