边坡岩体主要在重力作用下沿贯通的剪切破坏面发生滑动破坏的现象，称为( )。
A．松弛张裂
B．蠕动变形
C．崩塌
D．滑坡
参考答案：D
You should _____ your exam paper again and again before you hand it in. [ ]
A. write
B. check
C. pass
D. cut
