Youareprobablyfamiliarwiththesaying：Anappleadaykeepsthe...
问题详情：Youareprobablyfamiliarwiththesaying：Anappleadaykeepsthedoctoraway.ArecentresearchcarriedoutbytheChineseUniversityofHongKongmaychangethesaying:Anappleadaymaykeepagingaway.Theresearchchosefruitfl...