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________ is often the case, we have worked out the production plan.

时间:2022-06-19 21:56:14

________ is often the case, we have worked out the production plan.

A.Which

B.When

C.What

D.As

答案及解析: D

解析:

本题考从句。句中逗号后已构成句子,逗号前则不能是独立句子,只能是一个从句,句子不缺主、宾、表等成分,不需要名词性从句,排除what,从句中缺主语,when只是连词(或副词),不能充当主语,故排除。which和as都能引导定语从句,先行词都可以是一句话(或一个短语或从句),但which引导的定语从句不能放在句子开头,故选D,排除A。

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