- 问题详情:Everyoneknowsthatexerciseisimportant.Weallneedtoexercise.Doctorssayitisgoodforus.Itmakesyourheartandbodystrong.Childrenwhooftenexercisearemorealert(机灵的).Thismeanstheydobetterintestsandschoolworkthanthosewhodon’texercise. Therearemanyways...
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