2012初三二模专项阅读D篇.doc

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1、2012初三二模专项：阅读D篇01.东城DChildrencanspendhoursadaylookingatcomputerscreensandotherdigitaldevices(数码设备).Someeyedoctorssaythisleadstoanincreasein“computervisionsyndrome(电脑视力综合症).”NathanBonilla-Warfordisanoptometrist（验光师）inTampa,Florida.Hehasseenanincreaseinprob

2、lemsinchildren.“Alotmorechildrencomeintotheofficeeitherbecausetheirparentshavenoticedthattheyhaveheadachesorredorwateryeyesordiscomfort,orbecausetheirnearsightednessappearstobeincreasingandthey’reworried,”hesays.Dr.Bonilla-Warfordsayspartoftheproblemistha

3、tchildrenmaybemorelikelytopaynoattentiontoearlywarningsignsthanadults.“Eveniftheireyesstarttofeeluncomfortableortheystarttogetaheadache,they’relesslikelytotelltheirparents,becausetheydon’twanttohavethegameorthecomputerorwhatevertakenaway,”heexplains.Hesay

4、sanotherpartoftheproblemisthatpeopleblink（眨眼）lessoftenwhentheyusedigitaldevices.Hesays,“Apersonwhousesanelectronicdeviceblinksaboutonethirdasmuchaswenormallydoineverydaylife.Andsothatcanresultinthefrontpartoftheeyedryingandnotstayingprotectedlikenormal.”E

5、yedoctorsoffersuggestionslikefollowingwhichisknownasthe20/20/20rule.Thatmeanseverytwentyminuteslookawaytwentyfeetormoreforatleasttwentysecondsfromwhateverdeviceyou’reusing.Othersuggestionsincludeputtingmoredistancebetweenyouandthedeviceandusinggoodlightin

6、g.Ofcourse,anotherwayistospendlesstimelookingatscreens.Manyexpertssaychildrenshouldspendnomorethantwohoursadayusingdigitaldevices—withnoscreentimeforchildrenundertwo.Butnotalleyedoctorshavenoticedanincreaseinproblemsinchildren.Dr.DavidHunter,fromChildren’

7、sHospitalBoston,hasnotseenanincreaseinhispractice.“Whileitispossibletodevelopfatiguelookingatscreensforalongperiodoftime,there’scertainlynoproofthatitactuallycausesanydamage（伤害）totheeyes.”hesays.57.Whichofthefollowingistrueaccordingtothepassage?A.Dr.Bonil

8、la-Warfordthinksusingcomputerscausesnearsightedness.B.Peoplekeeptheireyesprotectedagainstdryingbyblinkingnormally.C.ChildrenundertwocanwatchTVforlessthantwohoursaday.D.Dr.DavidHuntersaysheadachecausesanincreaseineye