初中英语语法题 ＋ 简单物理题1.I decided to go to the health club as soon

初中英语语法题 ＋ 简单物理题
1.I decided to go to the health club as soon as I________________.
A:finsh what I read B:finished what I read
C:finished what I was reading D:would finish what I was reading
请给出正确明了的解释 谢谢.
2.为什么传送带上的物体与匀速行驶车中的人水平方向上都不受力?