【Doyouoftenfeeltiredorhardtoconcentrate(集中精力)inclass?Ifyouranswerstothisquestionisyes,小题1:..Notgettingenoughsleepcanleadtomanykindsofproblems.NewstudiesshowthatnotonlyChinesestuden】

　　Doyouoftenfeeltiredorhardtoconcentrate(集中精力)inclass?Ifyouranswerstothisquestion isyes, 小题1: . .Notgettingenoughsleepcanleadtomanykindsofproblems.

　　NewstudiesshowthatnotonlyChinesestudentssuffersfromlack(不足)ofsleep，Americanstudentsalsohavethesameproblem. 小题2: Whyaretheysotired?Onebigreasonistheuseofelectronicproducts（电子产品）.

　　Arecentsurveyfindsoutthat71%ofAmericankidsaged8to18haveTVsintheroomsand about36%havecomputersintheirrooms. 小题3: ,playingvideogames,sendingtextmessagestofriendsandwatchingTVbeforebedtime.

　　Howtosolvetheproblem?Scientistadvise “ 小题4: .”Spendingmoretimeonsleepcanhelpstudentsstayhealthy 小题5:

　　根据以上内容，从下列五个选项中选择适当的句子还原到短文中，使短文完整与正确。将其标号在答题卡上涂黑。（每小题2分，共10分）

　　A.SomeAmericanprimaryschoolstudentsareverytiredandsometimestheyevenfallasleepinclass.

　　B.perhapsitmeansyouneedmoresleep.

　　C.It’snevertoolatetochangebadsleephabits

　　D.ManykidsspendalotoftimesurfuringtheInternet,

　　E.anddowellatschool.