Our teacher said that light faster than sound.

A. travels B. was travelling

C. was travelled D. travelled

A 【解析】句意：我們老師說光比聲音傳播快。分析題干可知said之后是賓語從句，結(jié)合語境可知賓語從句中描述的是客觀真理，所以用一般現(xiàn)在時，主語light表示抽象含義，是不可數(shù)名詞，所以謂語動詞用單數(shù)；故答案選A。
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