英语试题2Glaciers begin to form------more snow falls during the winter than melts and evaporates in the summer.A is whenB when there areC whenD when does为什么选C 不是B

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英语试题2Glaciersbegintoform------moresnowfallsduringthewinterthanmeltsandevaporatesinthesummer.AiswhenB

英语试题2Glaciers begin to form------more snow falls during the winter than melts and evaporates in the summer.A is whenB when there areC whenD when does为什么选C 不是B
英语试题2
Glaciers begin to form------more snow falls during the winter than melts and evaporates in the summer.
A is when
B when there are
C when
D when does
为什么选C 不是B

英语试题2Glaciers begin to form------more snow falls during the winter than melts and evaporates in the summer.A is whenB when there areC whenD when does为什么选C 不是B
when引导时间状语从句.
若选B,即构词句子 there are more snow falls during the winter than melts and evaporates in the summer. 此句存在语法错误,因为后面出现了谓语动词falls和evaporates. 故不能用there be 型.
故选C.

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