问题
选择题
| 做匀加速直线运动的物体，加速度为2m/s2，它的意义是（ ） |
A．物体在任一秒末的速度是该秒初的速度的两倍 B．物体在任一秒末速度比该秒初的速度大2m/s C．物体在任一秒的初速度比前一秒的末速度大2m/s D．物体在任一秒的位移都比前一秒内的位移增加2m |
答案
答案：B
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| 做匀加速直线运动的物体，加速度为2m/s2，它的意义是（ ） |
A．物体在任一秒末的速度是该秒初的速度的两倍 B．物体在任一秒末速度比该秒初的速度大2m/s C．物体在任一秒的初速度比前一秒的末速度大2m/s D．物体在任一秒的位移都比前一秒内的位移增加2m |
答案：B
Mr Smith from London. Now he is in China. He is .He teaches English a middle school. He works very hard. His students like very much. He can a little Chinese . His students often teach him Chinese Sundays. Mr Smith likes playing football . He often plays football his students. Mr Smith a son. His name is Jack. He is student. He studies in a middle school. He goes to school bike everyday. He gets back home at four in the afternoon. He likes TV in the evening.
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