基层灭火救援中的政治工作是平时政治工作的延伸和发展，是灭火救援胜利的重要保证。
参考答案：对
Our teacher often warns us ________ on the road.
A．to run
B．running
C．not to run
D．not run
There is _____ wrong with this computer. It doesn't work well. [ ]
A. something
B. anything
C. everything
D. nothing
