2019-2020年高二上学期第二次阶段性检测英语试题含答案

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1、2019-2020年高二上学期第二次阶段性检测英语试题含答案第一部分：听力（略）第二部分：阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下面短文，从每题所给的四个选项中选出最佳选项。ASomecolorspeopleseelateatnightcouldcausesignsofclinicaldepression.Thatwasthefindingofastudythatbuildsonearlierstudyfindings.Theyshowthatindividualswholiveorworkinlowle

2、velsoflightovernightcandevelopclinicaldepression.Doctorsusetheword“clinicaldepression”todescribesevereformofdepression.Signsmayincludelossofinterestorpleasureinmostactivities,lowenergylevelsandthoughtsofdeathorsuicide.Inthenewstudy,Americaninvestigatorsdesignedanexperimentth

3、atexposedhamsters（仓鼠）todifferentcolors.Theresearcherschosehamstersbecausetheyarenocturnal,whichmeanstheysleepduringthedayandareactiveatnight.Theanimalswereseparatedintofourgroups.Onegroupofhamsterswaskeptinthedarkduringtheirnight-timeperiod．Anothergroupwasplacedinfrontofablu

4、elight,athirdgroupsleptinfrontofawhitelight,whileafourthwasputinfrontofaredlight.Afterfourweeks,theresearchersnotedhowmuchsugarywaterthehamstersdrank.Theyfoundthatthemostdepressedanimalsdranktheleastamountofwater.RandyNelsonheadstheDepartmentofNeuroscienceatOhioStateUniversi

5、ty.Hesaysanimalsthatsleptinblueandwhitelightappearedtobethemostdepressed．“Whatwesawisthattheseanimalsdidn’tshowanysleepuneasinessatallbuttheydidmessupbiologicalclockgenesandtheydidshowdepressivesignwhileiftheywereinthedim（微弱）redlight,theydidnot.”RandyNelsonnotesthatphotosens

6、itive（感光）cellsintheeyeshavelittletodowitheyesight.Hesaysthesecellssendsignalstotheareaofthebrainthatcontrolswhathasbeencalledthenaturalsleep-wakecycle.Hesaysthere’salotofblueinwhitelight.Thisexplainswhythebluelightandwhitelighthamstersappeartobemoredepressedthanthehamstersse

7、eingredlightordarkness.21．Researchersusehamstersintheexperimentbecause__________.A．theyaresimilartohumansindealingwithcolorsB．theyareeasytoobserveandstudyC．theyareactiveatnightandsleepduringthedayD．theyaresensitivetocolorslikehumanbeings22．Whatsignshowsthatthehamstersarebein

8、gdepressed?A．Theydon’tsleepwell.B．Theydrinklesssugarywater.C．Theireyesightb