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        1. My physics teacher told us light ______ faster than sound.
          A. travel         B. travels              C. traveled
          B
          考察時(shí)態(tài)。句意:我的物理老師告訴我們光比聲音傳播快。結(jié)合語境可知從句中描述的是客觀性動(dòng)作,故用一般現(xiàn)在時(shí)態(tài),選B。
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