一道英语完形填空题,Howmuchsleepdoyouneed?Wearealldifferent.Somepeopleneedonlythreehour#39;ssleepanight,__1__needtenhoursofsleepanight.Afteragefifty,theaveragesleeptimegoes__2__to6.5hoursanight.Mostofpeopleh

问题：一道英语完形填空题,Howmuchsleepdoyouneed?Wearealldifferent.Somepeopleneedonlythreehour#39;ssleepanight,__1__needtenhoursofsleepanight.Afteragefifty,theaveragesleeptimegoes__2__to6.5hoursanight.Mostofpeopleh

答案：↓↓↓

陈申的回答：

网友采纳　　3.D这里是说明1/3的美国人都有睡眠问题.是上一句Mostofpeoplehaveanightwhentheycan'tsleep中Mostofpeople的具体说明.　　5.B说明这不是一个newproblem,很多历史上著名的人物都有过.