河北省保定市高阳中学2014年高三下学期周考英语试卷

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1、河北省保定市高阳中学2014年高三下学期周考英语试卷AHowDoAnimalsCatchTheirZZZ’s?Differentcreatureshavedevelopedsomeprettycreativewaystogettheirrestandstaysafe.Thelizard（蜥蝎）likestosleepatthefarendofsmallbrancheshangingoutoverapondorlakeintherainforest.Ifasnaketriestoslitherupthe

2、branchtoeatit,itwillshakethebranchandknockthelizardoff,andthelizardwillfallsafelyintothewater.Chameleonscanchangecolortomatchtheirsurroundingsinordertohideevenwhilesleeping.Corillas（大猩猩）liketosleephighinthetrees.Theybuildanewbedeverynight,sometimestakin

3、guptohalfanhourtopilebranches,twigs,andleavesintoacomfortablebed.Birdsalsofinditsafetosleepinthetrees,butunlesstheyhaveeggsoryoungchicks,theydon’tuseanest.Theyjustlocktheirfeetaroundabranchandhangon.Aspecialtendon（腱）intheirlegsinautomaticallytightwhenth

4、eyareatrest,sotheywon’tletgoandfall.Dolphinsliveunderwater,butmustcometothesurfacetobreather.Scientistsnowbelievethatdolphinsmaysleepwithonlyhalftheirbrain,whiletheotherhalfstaysawaketokeepthemsafeandbreathing.Sealsalsodothis,lyingontheirsidesonthesurfa

5、ceofthewaterwithoneflipperunderwaterpaddlingtokeeptheirnosesabovethesurface.Someducksmayalsohavethisability,andactuallysleepwithoneeyeclosedandoneeyeopen.56．Howmanyanimalsarementionedinthispassage?A．6.B．7.C．8.D．9.57．Howdoesachameleonprotectitselfwhilesl

6、eeping?A．Bychangingitsbodycolors.B．Byhingingoutoverapond.C．Bysleepingwithhalftheirbrain.D．Bymakingbedswithbranches.58．Whywillnotbirdsfallwhentheyareatrest?A．Theybuildnestsandsleepinthem.B．Theyfallasleepautomatically.C．Theyhavealoosetendonintheirlegs.D．T

7、heylocktheirfeetaroundabranch.59．Whatdoesthewriterintendtotellus?A．Thecleverestanimalisthegorillabecauseitcanmakebeds.B．Differencesinhabitatcouldleadtodifferentlivinghabits.C．ThewaysanimalscatchtheirZZZ’sareprettymuchhesame.D．Inordertoprotectthemselvesm

8、ostanimalschoosenottosleep.BButIwonderaboutmyMommasometimes,andalltheotherNegro(blacks)motherswhogotupat6a.m.togotothewhiteman’shousewithsacksovertheirshoesbecauseitwassowetandcold.Iwonderhowtheymadeit.Theyworkedveryhardfortheman