题目

下列关于自由落体运动的说法中，（g取9.8m/s2）正确的是（） A . 自由落体运动是一种匀速运动 B . 物体刚下落时，速度和加速度都为零 C . 下落过程中，物体速度每秒增加9.8m/s D . 物体越重，下落得越快 答案：C_____, there were also no lights in the houses along the street. [     ]A. There not only were no streetlights B. Not only there were no streetlightsC. Not only were there no streetlights D. There were only no streetlights