题目内容
【题目】Gunpowder,__________ we all know, was invented in ancient China.
A. it
B. which
C. as
D. that
【答案】C
【解析】as we all know为固定搭配,意为“众所周知”。
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题目内容
【题目】Gunpowder,__________ we all know, was invented in ancient China.
A. it
B. which
C. as
D. that
【答案】C
【解析】as we all know为固定搭配,意为“众所周知”。