The experiment shows that proper amounts of exercise ,if _______regularly, can i
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The experiment shows that proper amounts of exercise ,if _______regularly, can improve our health.A.being carried out | B.carrying out | C.carried out | D.to carry out |
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答案
C |
解析
本题考查if条件句中的省略情况。本句的句子的主语是the experiment;谓语动词是shows;that引导宾语从句,宾语从句的主干事:proper amounts of exercise can improve our health,if_____ regularly是插入的条件从句,从句的主语是proper amounts of exercise,此时应用it代替前面提到的主语,条件句的主语与主句的主语一致,并且含有is,故省略了it is,完整形式是:if it is carried out。句意为:这项实验表明,适当的运动,如果有规律的进行,能够有助于我们的身体健康。 |
举一反三
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