The output of our factory is now twice______it was three years ago.

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问题 The output of our factory is now twice______it was three years ago.

选项 A、what
B、that
C、as
D、which

答案A

解析倍数的表达方式可以是倍数+名词，此句中，名词是一个由what引导的名词从句，what是从句的表语，故选A。

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大学英语三级A级

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