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some maddals came to live in the sea is notA.WhichB.SinceC.AlthoughD.How

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some maddals came to live in the sea is notA.WhichB.SinceC.AlthoughD.How

__________ some maddals came to live in the sea is not

A.Which

B.Since

C.Although

D.How

试题答案

D

该句的从句由疑问副词how引导的主语从句。选项B、C中的since和a1though不能引导主语从句;选项A中的which虽能引导主语从句,但与some矛盾。