题目内容

You must ________ when you hear the sound of starting gun in the race.

[  ]

A.keep the pace
B.run faster
C.slow down
D.start running
答案:D
解析:

(句意:比赛时当你听到发令枪响的时候,你必须起跑.  keep the pace跟上步伐  slow down减速)


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