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高三英语练习14AnnealingAnnealingisawayofmakingmetalsofterbyheatingitandthenlettingitcoolveryslowly.Ifmetalisheatedandthencooledveryquickly,forexamplebydipping(浸)itinwater,itwillbeveryhardbutalsoverybrittle(脆)—thatis,Itwillbreakeasily.Metalthathasbeenannealedissoftbutdoesnotbreakaseasily.Itispossibletomakemetalashardorassoftasiswished,byannealingit.Themetalisheated,andallowedtocoolslowly,foracertainlengthoftime.Thelongertheheatedmetaltakestocoolslowly,thesofteritbecomes.Annealingcanalsobeusedonothermaterials,suchasglass.70.AnnealingcanmakemetalA.hardandtough(韧).B.hardbutbrittle.C.softbuttough.D.softandbrittle.71.Whydopeopleputhotmetalinwater?A.Tomakeithard.B.Tomakeitsoft.C.Tomakeitcool.D.Tomakeitbrittle.72.Inannealing,therequiredhardnessofametaldependsonA.thequantityofwaterused.B.thetemperatureofthemetal.C.thesoftnessofthemetal.D.thetimingoftheoperation.73.Assuggestedbythetext,howcanglassbemadelessbrittle?A.Itcanbeheatedandthencooledquickly.B.Itcanbecooledandthenheatedslowly.C.Itcanbeheatedandthencooledslowly.D.Itcanbecooledandthenheatedquickly.92DThebasenjiisacentralAfricanhuntingdog.ItcomesfromacountrycalledChad,whichisnorthoftheCentralAfricanRepublic.Thebasenjiwaswell-knownasthesilentdogbecauseforcenturiesnobasenjishadeverbeenknowntobark(吠).ThenatadogshowinLondonin1953,abasenjiactuallybarked.Aswellasbeingclever,basenjisareknownfortheirnaturalcourageandarestillpopularhuntingdogsinAfrica.ButinAmericapeoplekeepthemmainlybecausetheyaregentleandfulloffun.Thebasenjihasanunusualhabit:itwashesitselfalloverlikeacat.Itisamiddle-sizeddog,16or17incheshighfromtheshoulder.Itweighsabout20pounds.Abasenji'scoatisshortandsilky.Itmaybebrown,white,orgold,oramixtureofthesethreecolours.81.Basenjiswerefirstfound.A.inAfrica,EuropeandAmericaB.inbothAfricaandAmericaC.incentralAfricaD.inNorthAfrica82.Whatmadebasenjissospecial?A.Theywerefunnyenoughtomakepeoplelaugh.B.OneofthembarkedatadogshowinLondon.C.Theywereatruefriendofman.D.Theywerebornquietdogs.83.Americanslikebasenjisbecausetheyare.A.pleasantB.PrettyC.cleanD.quiet84.Inwhatwayarebasenjislikecats?A.TheymakegentlesoundsinsteadofbarkingB.Theyarefondofpeopleandlooklikecats.C.Theycleanthemselvesallover.D.Theyhaveshort,silkyfur.85.Basenjisaregoodhuntersbecausetheyare.A.strongB.fearlessC.therightcolourD.therightweight93CForthousandsofyears,manhasenjoyedthetasteofapples.Apples,whichareabout85percentwater,growalmosteverywhereintheworldbutthehottestandcoldestareas(地区).AmongtheleadingcountriesinappleproductionareChina,FranceandtheUnitedStates.Therearevariouskindsofapples,butaveryfewmakeupthemajorityofthosegrownforsale.ThethreemostcommonkindsgrownintheUnitedStatesareDelicious,GoldenDelicious,andMcintosh.Applesaredifferentincolour,size,andtaste.Thecolouroftheskinmaybered,green,oryellow.Theyhavevarioussizes,withDeliciousapplesbeingamongthelargest.Thetastemaybesweetortart(酸的).Generally,sweetapplesareeatenfreshwhiletartapplesareusedtomakeapplesauce(苹果酱).Appletreesmaygrowastallastwelvemetres.Theydobestinareasthathaveverycoldwinters.Althoughnofruitisyieldedduringthewinter,thiscoldperiodisgoodforthetree.70.ItcanbelearnedfromthetextthatDeliciousapplesareA.growninFranceB.soldeverywhereC.verybigD.quitesweet71.Coldwinterweatherisgoodfor___.A.thegrowthofappletreesB.producinglargeapplesC.improvingthetasteofapplesD.theincreaseofwaterinapples72.China,FranceandtheUnitedStatesareconsideredto___.A.belargeproducersofapplesB.belargeproducersofapplesauceC.havethelongesthistoryinappleproductionD.havethecoldestwinteramongappleproducingcountries73.Thewordyieldedinthelastsentencemeans___.A.improvedB.increasedC.producedD.sold94BDoyoualwaysunderstandthedirectionsonabottleofmedicine?DoyouknowwhatismeantbyTakeonlyasdirected?Readthefollowingdirectionsandseeifyouunderstandthem.Toreducepain,taketwotablets(药片)withwater,followeedbyonetableteveryeighthours,asrequired.Fornight-timeandearlymorningrelief(缓解疼痛)taketwotabletsatbedtime.Donottakemorethansixtabletsintwenty-fourhours.Forchildrensixtotwelveyearsold,givehalftheamount(量).Forchildrenundersixyearsold,askforyourdoctor'sadvice.Reducetheamountifyousufferfromrestlessnessorsleeplessnessaftertakingthemedicine.65.Howmanytabletsatmostcanapersonover12havein24hours?A.ThreeB.FourC.SixD.Eight66.Howmanytabletsshouldanine-year-oldchildnormallytakein24hours?A.Halfatablet.B.Onetablet.C.Twotablets.D.Fourtablets.67.Whatistheadviceforonewhocannotsleepwellaftertakingthemedicine?A.Stoptakingthemedicineatbedtime.B.Continuetotakethenormalamount.C.Takemorethanthenormalamount.D.Takelessthanthenormalamount.68.Itcanbeinferredfromthedirectionsthatthismedicine.A.helpsyoutofallasleepquicklyB.maybedangeroustosmallchildrenC.cannotbetakenifonefeelssleepyD.shouldnotbetakenbychildrenundersix69.Thistextismostprobablytakenfroma.A.textbookB.newsreelC.doctor'snotebookD.bottleofmedicine94DTherearedifferentwaysinwhichpeopletrytodealwiththeproblemofenergy.Onewayisthegreaterproductionofcommonenergysources(能源),suchascoal,oilandgas.Thetroublewiththesesources,however,isthattheyarenotrenewable.Anotherwayisenergyconservati