( )
A:People can cook with it.
B:People can take photos with it.
C:People can tell the time with it.
读下图,据此完成:B处多水灾的原因是( )
短跑运动员5s跑了50m,羚羊奔跑的速度是20m/s,汽车的行驶速度是54km/h,三者速度从小到大的排列顺序是( )