读“板块运动示意图”,回答下列问题.
________my mother is very tired after a whole day's hard work, she tries to spare time for me.
读图回答问题
在划龙舟比赛中,为使龙舟快速前进,需用力向后划水,这利用了物体间力的作用是____ .到达终点后,停止划水,龙舟由于____ 仍会向前移动.
罚篮数/次
100
200
500
800
进球数/次
90
178
453
721