问题:

【(2010·广东华南师大附中高三综合测试一)Judgingfromrecentsurveysmostexpertsinsleepbehaviouragreethatthereisvirtuallyanepidemic(流行病)ofsleepinessinthenation.“Ican’tthinkofasingle】

更新时间:2024-03-29 20:31:38

问题描述:

(2010·广东华南师大附中高三综合测试一)

Judgingfromrecentsurveysmostexpertsinsleepbehaviouragreethatthereisvirtuallyanepidemic(流行病)ofsleepinessinthenation.“Ican’tthinkofasinglestudythathasn’tfoundAmericansgettinglesssleepthantheyoughtto”saysDr.David.Evenpeoplewhothinktheyaresleepingenoughwouldprobablybebetteroffwithmorerest.

Thebeginningofoursleep-deficit(lack)crisescanbetracedbacktotheinventionofthelightbulbacenturyago.Fromdiaryentriesandourpersonalaccountsfromthe18thand19thcenturiessleepscientistshavereachedtheconclusionthattheaveragepersonusedtosleepabout9.5hoursanight.“Thebestsleephabitsoncewereforcedonuswhenwehadnothingtodointheeveningdownonthefarmanditwasdark.”Bythe1950sand1960sthesleepschedulehadbeenreduceddramaticallytobetween7.5and8hoursandmostpeoplehadtowaketoanalarmclock.“Peoplecheatintheirsleepandtheydon’tevenrealizethey’redoingit”saysDr.David.“Theythinkthey’reokeybecausetheycangetbyon6.5hourswhentheyreallyneed7.58orevenmoretofeelideallyenergetic.”

Perhapsthemostmercilessrobberofsleepresearchessayisthecomplexityoftheday.Wheneverpressuresfromworkfamilyfriendsandcommunityincreasemanypeopleconsidersleeptheleastexpensiveitemontheirprogramme.“Inoursocietyyou’reconsidereddynamicifyousayyouneedonly5.5hours’sleep.Ifyou’vegottoget8.5hourspeoplethinkyoulackdriveandambition.”

Todeterminetheconsequencesofsleep-deficitresearchershaveputsubjectsthroughasetofpsychologicalandperformancetestsrequiringthemforinstancetoaddcolumnsofnumbersorrecallapassagereadtothemonlyminutesearlier.“We’vefoundthatifyou’reinsleepdeficitperformancesuffers”saysDr.David.“Short-termmemoryisweakenedasareabilitiestomakedecisionsandtoconcentrate.”

41.Whatisthemaintopicofthepassage?

A.Researchonthecausesandconsequencesofsleep-deficit.

B.Theepidemicofsleepinessinthemoderntimes.

C.Thehistoryofpeople’ssleepingpatterns.

D.Theminimumofoursleepinghours.

42.WhichofthefollowingisDr.David’sopinion?

A.Peoplewhothinktheyare

曹雁锋回答:

  41-45ADCBC

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