—What did the teacher say just now?      

—He said that the earth _____ round the sun.      [ ]

A. go            

B. goes          

C. going          

D. will go

机动车进出厂房、仓库大门、停车场、加油站、上下地中衡、危险地段、生产现场、倒车或拖带损坏车辆时最高行驶速度为（）。

A.10km/h

B.5km/h

C.8km/h