油管及管道堵塞时，可以用重锤敲打进行疏通。
参考答案：错
We're just trying to reach a point _____ both sides will sit down together and talk. [ ]
A. where
B. that
C. when
D. which
提出绘画“妙在似与不似之间”的是 ( )
A．徐悲鸿
B．刘海粟
C．傅抱石
D．齐白石
