中国社会结构逐渐从传统礼会向近代礼会的转型开始于[ ]
A．鸦片战争
B．洋务运动
C．中 * * 党成立
D．新民主主义革命胜利
答案：B
Cathy went to the hospital alone. If she had told me about it, I ____ with her. [ ]
A. had gone
B. would have gone
C. would go
D. went
当制动力等于附着力时，车轮将被抱死而在路面上（）。
A、滑移
B、滑转
C、滚动
D、边滚边滑
