— Guess yesterday.— I think you went to see the movie The Lion King.
A:where did I go
B:what did I do
C: when I did it
D:what I did
短跑运动员5秒跑了50米,羚羊奔跑速度是20米/秒,汽车的行驶速度是54千米/时,三者速度从小到大的排列顺序是( )
如图是实验室制取和收集气体的常见仪器.请回答下列问题.