The government had hoped to draw as much attention as possible to this problem but it didn’t  ______that way.

A．work out

B．give out

C．go out

D．pick out

修井过程中，钻柱接触某些腐蚀物介质时，容易发生应力（）。

A、表面粗糙

B、硬度下降

C、腐蚀断裂

D、疲劳