题目内容

Our teacher told us that light _____ much faster than sound.
A．traveledB．travelsC．is travelingD．was traveling
B
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。
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