立定跳远是中考体育项目之一,起跳时,两脚蹬地的力大于重力,使身体获得斜向上的初速度;跳起腾空后,当上升到最高点时,身体受到的重力方向为,此时人继续向前运动,是因为人具有. 答案:【1】竖直向下【2】惯性1.My boss doesn’t a
me to use the
telephone.
2.We should not p
the environment.
3.He promised to be here at four o’clock,
but didn’t a until six.
4.This two photographs are almost a .
5.I tried to w
him but he didn’t
listen.
6.Don’t e without knocking.
7.He wanted to b
a hotel room.
8.She looks very p
in that hat.
9.I asked him w
we should take the
exam.
10.That music s
beautiful.