题目

--What does the boy like?  --He is _______ his father. He also_______ eating mangoes.        A. likes; like   B. like; like   C. likes; likes   D. like, likes 答案：D下列说法中正确的是（　　）A.质量很小的物体一定能看作质点B.参考系必须是静止不动或正在做直线运动的物体C.“前3秒钟”“最后3秒钟”“第3秒钟”指的都是时间D.加速度是描述了物体速度变化多少的物理量