问题
选择题
The villagers have already known _____ we will do is to rebuild the bridge. [ ]
A. this
B. that
C. what
D. which
答案
答案：C
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The villagers have already known _____ we will do is to rebuild the bridge. [ ]
A. this
B. that
C. what
D. which
答案：C
2NO在密闭容器中进行，下列措施能加快反应速率的是( )