Our teacher told us that light much faster than sound.
A. traveled
B. travels
C. is traveling
D. was traveling
网友回答
A. traveled
(答案→)B. travels
C. is traveling
D. was traveling
解析：此题考查宾语从句的时态。句意：老师告诉我们光比声音传播速度快。当宾语从句描述的是事实或客观真理，不管主句的谓语动词是什么时态都要用现在时。选B。