题目内容：
The output of our factory is now twice ________ it was three years ago.A)
what
B)
that
C)
as
D)
which
参考答案：
选择题：The output of our factory is now twice ________ it
- 题目分类：华北水利水电大学-水利水电建筑工程-大学英语2
- 题目类型：选择题
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A)
what
B)
that
C)
as
D)
which