小钢推着1000N重的车子在水平地面上匀速前进10m,他推车时重力所做的功是______J.
因为在重力的方向上没有移动距离,所以重力做功为0.
故答案为:0.
一个数个位上是3,十位上是4,这个数是( )。
Yao Ming will play in the basketball game between China and Japan in Shanghai. Let’s ______.
A.cheer him up
B. cheer on him
C.cheer him on
D.to cheer him on