高考总复习优化设计1轮英语人教课时规范练37选修8 Unit2附答案Word文档格式.docx

高考总复习优化设计1轮英语人教课时规范练37选修8 Unit2附答案Word文档格式.docx

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Heathasbeenusedtocontrolhair,suchasblow-dryinghair,curlinghairandstraighteninghair,forhundredsofyears.Buthowmuchistoomuch?

Ifyou’veeveropenedaveryhotoven,youknowthatheatcanburnyoureyebrowsoffyourfaceveryquickly.

AscientistfromPurdueUniversityinIndianaistryingtofindascientificansweronhowhotistoohotwhenitcomestoyourhair.

Manywomenandsomemenareveryparticularabouttheirhair.Somepeoplewhohavenaturallycurlyhairprefertohaveitstraightened.Otherswithstraighthairwanttohavecurls.TahiraReidisoneofthosepeople.AsanAfrican-Americanwoman,sheisfamiliarwiththechallengesofmaintainingcurly,coiledortightlycurledhair.Puttinghermechanicalengineeringtrainingtowork,TahiraReidandotherresearchersatPurdueUniversityarestudyinghowheattreatmentinteracts（相互作用）withdifferenttypesofhairandhowtopreventdamage.

InaPurdueUniversitylab,theteammembersdesignedahairstraightenertool—aflatironwithceramic（陶瓷的）platesandtemperaturecontrol.Theyattachedittoarobotic（机器人的）armthatmovedoverpiecesofhair.Theymonitoredthetemperaturewhilethedevicestraightenedhair.

Theirstudyfoundthattheheatweakenedorbrokeaproteincalledkeratin,responsibleforthehair’sshape,andtemporarilychangedit.Butnobodyknowsexactlyatwhatleveltheheatcanactuallycausepermanentdamage.

Researcherssaytheresultsareabitinconclusive.Itturnsoutthateveryone’shairisdifferentandthatthere’snoexacttemperaturewherehairstraighteningbecomeshairdamage.Forexample,peoplewithnaturallycurlyhaircansuffermoredamagefromheatironsthanthosewithstraighthair.

MsReidsaystheywillcontinuetheirresearchinthehopeoffindingwhatworksbestwithoutdamagingthehair.

1.Theauthormentionedopeningaveryhotovento　　　. 

A.exposeeyebrowstohightemperatures

B.remindpeopleoftherightuseofanoven

C.warnpeopleoftheharmofblow-dryinghair

D.suggestthedamagetohaircausedbyhightemperatures

2.Thehairdevicedesignedbytheteammemberscan　　　. 

A.makehairstraight

B.changehairstyleseasily

C.limitheatinaproperlevel

D.preventhairfrombeingdamaged

3.Howcanheatcreatehair’sshapesaccordingtothestudy?

A.Itpermanentlyweakensthehair.

B.Itchangesasubstanceofthehair.

C.Itmakesthehairtemporarilyhard.

D.Itmakesthehaireasilybroken.

4.Theunderlinedword“inconclusive”inPara.6means“　　　”. 

A.clear　　　　　　　　　B.decisive

C.uncertainD.helpful

〚导学号23280147〛

Ⅱ.完形填空

河北石家庄期中检测）

Insomecases,thehomeenvironmentcancontributetoachild’sproblematicbehavior.　1　suchasaparent’sjobloss,financialstrain,divorceordeathofalovedonecanpromptsometo　2　.Thestresssurroundingonechild’sbehaviorcan　3　everymemberofafamily,makingitmoredifficultforotherchildreninthehouseholdtoperform　4　inschoolandothersettings.Ahealthorganizationwasestablishedtohelpfamiliesinthesesituationsworkpastbehavioral　5　.“Althoughonechild’sbehaviormightbethecrisisissuethat　6　afamilytocometoseeus,wetakethe　7　thatthewholefamilyisourpatient,notjustasinglechild,”saysGinaRichman,directoroftheorganization. 

DrRichmanfindsthatmanyoftheparentssheworkswithhave　8　controlovertheproblemsintheirhouseholds.Caughtupindealingwithfinancialcrises,　9　,healthproblemsandotherimmediateissues,theissuesofmaintaininga　10　andstructuredenvironmentbecomesmorechallenging,andchildrensometimeslosesightofwhoisin　11　andhowtobehaveappropriately.“That’swhyit’ssoimportantforusto　12　thewholefamilyintothetherapyroom,”shesays.“Wehaveto　13　thathierarchy（阶层）andputthatparentbackontop.”This　14　isparticularlycommoninfamiliesheadedby　15　women,whosechildrenmightcreateromanticizednotions（概念）ofabsenteefathers,butshowlittle　16　forthemotherwhoholdstheirfamilyunittogether.Infamilieswhereonechild’sbehaviorhasbecomeasourceof　17　foreveryone,otherchildreninthehouseholdmaybegintofeelliketherelativewhoisacting　18　hascontroloverthefamily.Theorganization’s　19　supportstheideathatonechild’s　20　reallyisn’ttheissue—theimportantthingistoalterthefamilydynamic（对抗性态势）sothateveryoneinteractsinamorehealthyway. 

1.A.OpportunitiesB.Issues

C.FortunesD.Behaviors

2.A.giveupB.thinkup

C.riseupD.actout

3.A.affectB.inspire

C.encourageD.astonish

4.A.poorlyB.successfully

C.strangelyD.thoughtfully

5.A.actionsB.mistakes

C.challengesD.disorders

6.A.pushesB.advises

C.permitsD.forbids

7.A.conclusionB.attitude

C.ideaD.theory

8.A.endlessB.limited

C.greatD.definitive

9.A.marriagesB.careers

C.tragediesD.emotions

10.A.friendlyB.adaptable

C