问题
选择题
如图所示为物体做直线运动的v-t图象.若将该物体的运动过程用x-t图象表示出来(其中x为物体相对出发点的位移),则图中的四幅图描述正确的是

A、
B、
C、
D、
答案
答案:C
如图所示为物体做直线运动的v-t图象.若将该物体的运动过程用x-t图象表示出来(其中x为物体相对出发点的位移),则图中的四幅图描述正确的是
A、
B、
C、
D、
答案:C
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Tom: No, John is not here. Look, he's over there. Mr. Black: 2____________________ Is he running to us? Tom: No, he is playing with Chen Jie. Mr. Black: Go and tell him to come here, Tom. (Tom runs to John and Chen Jie.) Tom: John and Chen Jie, it's time to leave now. 3____________________ John: No, we are doing an experiment on insects. Tom: 4____________________ John: Yes, they like it very much. Tom: 5____________________ |