题目

---How do you feel your travel to Hainan?    --- _______ ,I enjoyed it very much, although the weather of some days was unpleasant. A. In addition           B. On the whole     C. In other words        D. On the other hand 答案：B把物体以一定速度水平抛出，不计空气阻力，g=10m/s2，那么在落地前的任一秒内A．物体的末速度大小一定等于初速度大小的10倍B．物体的末速度大小一定比初速度大10m/sC．物体的位移比前一秒多10 mD．物体下落的高度一定比前一秒多10m