—What's this in English?
—It's ______.
[ ]
A. a pen
B. a ruler
C. an pen
D. an ruler
答案:A
The old couple often take a walk after supper in the park with their pet dog them. [ ]
A. to follow
B. following
C. followed
D. follows
下列体育比赛的场景中不能用惯性知识解释的是
A.铅球出手后仍向前运动
B.足球撞到门框上被反弹
C.跳高运动员离开地面后仍向上运动
D.运动员百米冲刺后不能立即停下来