课时作业四UsingLanguage高中英语选修8人教版全套课时作业综合检测

课时作业(四)UsingLanguageⅠ.单词拼写1．Thenewaircrafthasperformedverywellinits________(最初的)trials.2．Threeofthechickens________(孵出)today.3．The________(羽毛)ofapigeoncanbringyougoodluck!4．Hegavemea________(合理的)explanation.5．I________(只是)suggestyoushoulddoitagain.6．Sheputsome________(装饰)ontheChristmastree.7．Thegreat________(缺点)tolivingnearamainroadisnoise.8．Alittlebabyis________(不能的)towalkortalk.9．It'straditionalinEnglandtoeat________(火鸡)onChristmasDay.10．Wetriedin________(徒劳的)topersuadehimtogowithus.Ⅱ.单项填空1．Abrightideasuddenly________methatIcouldusethemoneyIsavedtohelpapoorstudentinthecountryside.A．struckB．occurredC．happenedD．hurt2．—Can'tyoukeepstill？Isitsofunny?—Sorry.Icanhardlyresist________.A．laughingB．tolaughC．cryingD．tocry3．Heisingood________foramanofhisage.A．conditionB．atmosphereC．caseD．situation4．—Doyouoftengofishingatweekends?—Notoften，Ionlygofishing________.A．atonetimeB．allthetimeC．atatimeD．fromtimetotime5．(2013·许昌高二检测)Heisa________personandwillunderstandyourdelay.A．availableB．comfortableC．convenientD．reasonable6．Theworkwehavedonehasbroughtgreatbenefits.Wearehappythatoureffortsarenot________.A．inuseB．inneedC．invainD．inorder7．(2013·辽阳高二月考)Youhavenoideahowshefinishedtherelayrace________herfootwoundedsomuch.A．forB．whenC．withD．while8．—AreyousurethatAliceishonest?—No.That's________aguessofours.A．certainlyB．hardlyC．merelyD．nearly9．Thedecisionhasbeenmade________thenewschoolbuildingbebuiltnextmonth.A．whyB．howC．whetherD．that10．(2013·四川高考)—IfeelsonervousabouttheNationalEnglishSpeechCompetitiontomorrow.—________.A．IreallyenvyyouB．GladtohearthatC．SoundsgreatD．TakeiteasyⅢ.阅读理解AAteamofMichiganStateUniversity(MSU)researchershasdevelopedanew，moreefficientwayofcloningzebrafish，abreakthroughthatcouldhaveanimpactonresearchintohumanhealth.Zebrafisharequicklybecomingtheanimalofchoiceformanyresearchers.“Aftermice，theyarethemostcommonlyusedvertebrates，thatis，animalswithbackbones，ingeneticstudies，”saysJoseCibelli，theleaderoftheteam.“Theyareusedincancerandheart­diseaseresearchbecausetheyhavemanyofthesamegenesaspeoplehave.”Formorethan20years，zebrafishhavealsoservedasanexcellentmodelforunderstandingbothnormaldevelopmentandbirthimperfections.Morerecently，researchwithzebrafishhasextendedtomodelinghumandiseases.Traditionalcloningusesaneggandadonor(捐赠者)cell.TheDNAisremovedfromtheeggandreplacedbytheDNAtakenfromthedonor.Theresultingfishisanexactgeneticcopyofthedonor.InCibelli'stechnique，theeggisremovedfromthefemalezebrafishandplacedintheovarian(卵巢的)fluidofaChinooksalmon，anotherkindoffish，beforethedonorcellisplacedintotheegg.Thepreviousmethodsofcloningzebrafishhadverylowsurvivalrates.Withthenewtechnique，thenumberofclonedfishisincreasedby15percent.Whatmakeszebrafishsousefulinresearchisthattheireggsaretransparent(透明的)，makingthefish'sdevelopmenteasytofollow.Improvingzebra­fishcloningtechniquesisalsoimportantbecausecurrentlythemouseistheonlygoodmodelforgeneticresearch.“Sofarthemouseistheonlyanimalfromwhichyoucandeletegenesinareliableway，”Cibellisays.“Whatresearchersdoismutate(使变异)agene，destroyitsfunctioncompletely，andthenstudytheconsequences.”1.Whatdowelearnaboutzebrafishfromthetext?A．Theycanbeusedtocurehumandiseases.B．Theyhavebeenusedingeneticstudiesfor20years.C．Theyaretheonlyvertebratesusedincloning.D．Theirsurvivalratesareincreasedbythenewmethodofcloning.2.Researcherschoosezebrafishforgeneticresearchbecause________.A．theyhavethesamegenesashumanbeingsB．theyareakindofvertebrateC．theirgenescanbechangedD．theireggsareeasytoobserve3.WecaninferthefollowingfromthetextEXCEPTthat________.A．thezebrafishcloningtechnologymayprovideanewmodelforgeneticresearchB．micewillnotbeusedingeneticresearchanymoreC．experimentalresultsonzebrafishmayapplytohumanbeingsD．JoseCibelliledthenewresearchofcloningzebrafish4．What'sthetextmainlyabout?A．Howcloninghasdeveloped.B．Astudyofanewwaytoclonezebrafish.C．Abreakthroughinresearchintohumanhealth.D．Zebrafish，thebestmodelforgeneticresearch.BWithallthelow­fatandfat­freeproductsonthemarket，you'dthinkreducingfatintakewouldbethesurestwaytogreaterhealth.Infact，thereissuchathingastoolittlefat.Strangebuttrue：eatingwithoutfatcanleadtovitamindeficiencies(维生素缺乏症)．That'sbecausesomevitaminsrequirefattobetakenintothebodyandtodotheirjobs，whichincludeprovidingenergy，keepingthebodyworkingnormallyandsupportingthebodytofightagainstdisease，forastart.Vitaminsarenecessary，whichmeansfatsarenecessary，too.Dietaryfat，whichcomesfromthefoodyoueat，iscrucialtotheintakeofthevitaminssoluble(可溶的)infat，whichincludesvitaminsA，D，EandK．(VitaminC，neededforhealthyteeth，doesn'tneedfat)Amongthem，vitaminAisnecessaryforgoodeyesight，andvitaminDforbonehealth.Whenvitaminswhicharesolubleinfataretakenin，theymovefromthemouthtothestomachandthentothesmallintestine(小肠)．Fatscanmoveacrossthecellwalls(细胞壁)ofthesmallintestineandenterthebody'sgeneralmovementofblood.Anyvitaminsinthatfataretakenintothebodyaswell.Thevitaminsarethencarriedtotheliver(肝脏)，wherethey'restoreduntilthebodyneedsthem.Withoutenoughfatinyourdiet，yourbodycannotsuccessfullytakeinthefat­solublevitaminsthatarenecessarytoyour