You________all those clothes!We have a washing machine to do that sort of thing.[ ]

A. needn't have washed  

B. shouldn't have washed

C. must not have washed  

D. can not have washed

在风荷载作用下，高层建筑的水平变形有所限制，下列何种限制是正确的()

A．仅限制层间位移与层高的比值

B．仅限制顶点最大加速度

C．层间位移与层高之比及顶点最大加速度均限制

D．主要限制顶点最大加速度，层间位移与层高之比的限制可放宽