2. 公务员
  3. Animals and people blind from birth have a regular body clock that，in many studies，has been shown to______just over 24 hours a d

Animals and people blind from birth have a regular body clock that，in many studies，has been shown to______just over 24 hours a d

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问题 Animals and people blind from birth have a regular body clock that，in many studies，has been shown to______just over 24 hours a day．
选项 A、run
B、gain
C、average
D、say
答案A
解析 此句意为“眼盲的动物和人从出生时，体内就有一个生物钟。许多研究表明这个生物钟一天24小时在运行”。run“运作，运转，运行”，故A符合题意，为正确答案。gain“获得”；average“计算……的平均值”；say“说”，均不符合题意。
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