题目

------It was really very kind of you to give me a life home.   -------Oh, don’t mention it. I_____ past your house anyway.   A. was coming       B. will come   C. had come   D. have come 答案：A 解析: 略 下列说法中正确的是 A．做匀速圆周运动的质点所受合外力一定不为零 B．做平抛运动的质点所受的合外力随速度的改变而改变 C．匀速圆周运动是一种匀变速曲线运动 D．平抛运动是一种变加速曲线运动