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• Theexperimentshowsthatproperamountsofexercise，if 

• 问题详情：Theexperimentshowsthatproperamountsofexercise，if __ regularly，canimproveourhealth．（）A．beingcarriedout     B．carryingoutC．carriedout  D．tocarryout【回答】C知识点：非谓语动词题型：选择题...
• 2019-08-1923430