调和的美是变化的（）。
A．重复
B．组合
C．统一
D．构成
参考答案：C
Not only ______ prepare lunch for us, but also _______ clothes for us.
A．he did , he washed
B．he did , did he wash
C．did he , he washed
D．did he, did he wash
用友报表系统中，报表数据处理一般是针对某一特定表页进行的。( )
