Theexperimentshowsthatproperamountsofexercise,ifregularly,canimproveourhealth.
A.beingcarriedout
B.carryingout
C.carriedout
D.tocarryout
上一篇 ___________A. presentedB. markedC. litD. associated
下一篇 ( Ⅱ)试判断以线段MN 为直径的圆是否过点F,并说明理由.
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