Please take some photos the pandas and send them to me email.
A:of; in
B:of; by
C:by; in
D:to; by
咏“水”:____,____。(陆游《游山西村》)
用水平力推矿泉水瓶的下部,矿泉水瓶沿桌面滑动,改用同样大小的水平力推矿泉水瓶的上部时,矿泉水瓶被推倒,这说明力的作用效果与( )