思想政治教育的“三性”？
参考答案：
主动性、针对性、实效性。
雾天行车多使用喇叭可引起对方注意；听到对方车辆鸣喇叭，也应鸣喇叭回应。
Some young people these days just ____ go out of their homes to contact the real world. [ ]
A. mustn't
B. won't
C. mightn't
D. shouldn't
