题干
---Which bag would you like to choose?
---The one there is a Mickey Mouse.
---The one there is a Mickey Mouse.
A：where
B：which
C：what
D：that
答案(点此获取答案解析）
A
时刻，将一金属小球从弹簧正上方某一高度处由静止释放，小球落到弹簧上压缩弹簧到最低点，然后又被弹起离开弹簧，上升到一定高度后再下落，如此反复。通过安装在弹簧下端的压力传感器，测出这一过程弹簧弹力
随时间
变化的图像如图（乙）如示，则
