在德育网络中,起主导作用的是()
A、家长委员会
B、学校
C、关心下一代工作委员会
D、居民委员会
参考答案:B
屋面涂膜防水层的平均厚度应符合设计要求,最小厚度不应小于设计厚度的( )。
A.75%
B.80%
C.85%
D.90%
Could it be in the classroom ________ we had a talk last night ________ you left your keys? [ ]
A. that; where
B. in which; where
C. where; that
D. where; in which