题干
---- There is only three days left, but w still have a pile of papers to deal with.
---- Don’t worry. We have already __________ two thirds of them after all.
---- Don’t worry. We have already __________ two thirds of them after all.
A：got over
B：got through
C：given u
D：given away
答案(点此获取答案解析）
B
s拍一次照，得到的照片如图3所示，则小球在图中过程运动的平均速度是 ( )