如图所示,在水平路面上一运动员驾驶摩托车跨越壕沟,壕沟两侧的高度差为0.8m,水平距离为8m,则运动员跨过壕沟的初速度至少为(取g=10m/s2)( )
A:0.5m/s
B:2m/s
C:10m/s
D:20m/s
Look at the ____. It can ride a ____. Its ____ are big and its mouth is ____ too. Its tail is____.