2018-2019学年高中一轮复习英语选修八Unit3高考拆组训练

选修八Unit3高考拆组训练练(一)语言运用组块专练——练准度(限时：25分钟)Ⅰ.完形填空Resealable(可密封的)plasticbags—sometimescalledbyabrandname,suchasZiploc®—arethoselittleclearplasticbagsyouusetokeepyoursandwichesandchipsfresh.Theyusuallyhavesomesortofsealingmechanism,likeaplasticzipper,whichallowsyoutosealthebagtokeep__1__out.Keepingairawayfrom__2__allowsthemtostayfreshlonger.Bacteriaandotherorganismsintheairwill__3__fooditemsovertimeifallowedtoeinto__4__withthem.Sealedplasticbagskeeptheseorganisms__5__gettingtoyourfood.Resealableplasticbagscanbeusedformorethanjust__6__sandwiches,chipsandsnackstoschoolforlunch.They’realsousedtokeepleftovers__7__intherefrigerator.Manypeoplealsousethemto__8__foodinthefreezerforuseinthefuture.The__9__oftheresealableplasticbagstartedoutin1951atapanynamedFlexigrip,Inc.Flexigrip__10__aplasticzipperfrompatentswhichwasboughtfrom__11__BorgeMadsen.Thesezipperswere__12__usedaspartsofbindersandbriefcases.Overtime,__13__，plasticzipperbagsweredeveloped.Eventually,in1968,DowChemicalpany__14__tomarketitsZiploc®brandofresealableplasticbagstogrocerystores.Theyturnedouttobevery__15__.Today,thesetypesofbagsare__16__inmanydifferentsizesandstyles,fromsnackandsandwichbagstocraftandfreezerbags.Youcanalsobuybagswithexpandablebottomsthat__17__ontheirown.Somebagsevenallowyouto__18__foodinthemicrowave!However,nowmanypeopletrytouse__19__plasticbecauseofitseffectontheenvironment.Somanufacturersofresealableplasticbagshavetaken__20__tobeemoreenvironmentallyfriendly.语篇解读：本文主要介绍了可密封塑料袋的用途及发展史。同时指出，为了减少污染，这种塑料袋的生产厂家也采取措施以使他们的产品更加环保。1．A.air B．waterC．dust D．fog解析：选A由第二段开头的“Keepingairaway”可知，此处指把空气阻挡在外面。2．A.plants B．containersC．bags D．foods解析：选D根据下文中的“Bacteriaandotherorganismsintheairwill__3__fooditemsovertime”可知，此处指让空气和食物隔离，以便食物保鲜的时间长些，故选foods。3．A.bringin B．takeoutC．breakdown D．dealwith解析：选C空气中细菌和其他微生物会分解食物导致食物变质。breakdown意为“分解”。4．A.relation B．contactC．connection D．contract解析：选B如果细菌和其他微生物与食物接触，食物将会很快变质。contact意为“接触”；relation意为“关系”；connection意为“连接”；contract意为“合同”。5．A.from B．againstC．through D．beyond解析：选Akeep...from...为固定搭配，意为“阻止……”。6．A.following B．presentingC．supplying D．transporting解析：选D下文中的“toschoolforlunch”说明，此处指携带食物到学校。7．A.wet B．freshC．thin D．hard解析：选B根据句中的“intherefrigerator”及生活常识可知，它们也被用来保持剩余的食物新鲜。8．A.store B．cookC．share D．produce解析：选A本段主要介绍可密封塑料袋能用来保存食物，因此这里指储存食物。9．A.result B．humourC．history D．success解析：选C根据下文中的“startedoutin1951atapanynamedFlexigrip,Inc”可知，此处提到这种可密封塑料袋的历史。10．A.discovered B．developedC．spread D．approved解析：选B此处表示买了专利以后，研发了塑料拉链。11．A.writer B．teacherC．doctor D．inventor解析：选D句中patents说明，博尔格·马森是一位发明家。12．A.eventually B．frequentlyC．originally D．naturally解析：选C根据下文中的“Overtime,__13__，plasticzipperbagsweredeveloped.”可知，此处谈的是塑料拉链袋的最初情况，故选originally。eventually意为“终于”。13．A.however B．besidesC．therefore D．otherwise解析：选A最初，塑料拉链袋的用途很少，后来它得到了发展。此处表示转折。14．A.agreed B．beganC．promised D．preferred解析：选B最后，陶氏化学公司开始将塑料拉链袋投入市场。15．A.necessary B．famousC．funny D．popular解析：选D文章介绍了这种塑料袋的发展。它也很受欢迎。16．A.precious B．expensiveC．available D．fashionable解析：选C根据“inmanydifferentsizesandstyles,fromsnackandsandwichbagstocraftandfreezerbags”可知，这些袋子有很多不同的尺寸和样式，在很多地方可以使用。17．A.move B．standC．float D．remain解析：选B根据句中的“bagswithexpandablebottoms”可知，袋子底部可伸展，因此它能竖起来。18．A.heat B．tasteC．find D．purchase解析：选A根据“inthemicrowave”可知，把食物放入微波炉中，为的是给食物加热。19．A.more B．smallerC．larger D．less解析：选D根据“becauseofitseffectontheenvironment”可知，人们现在尽量少使用塑料袋。20．A.chances B．stepsC．photos D．orders解析：选B他们已经采取措施以使他们的产品更加环保。takesteps意为“采取措施”。Ⅱ.语法填空Scientistshavediscoveredthat__1__(stay)inthecoldcouldhelpusloseweight.ResearchersattheUniversityofCaliforniafoundthatexposuretothecoldincreaseslevelsofaproteinthathelpsformbrownfat—thetypeoffatthatproducesheatandkeepsuswarm.Brownfatburnsenergy,__2__helpsusloseweight.Whitefatstoresextraenergy,whichresults__3__weightgain.Theresearcherssaidthatbecauseairconditioningandheatinggiveusconstant,__4__(fort)temperatures,ourbody’sneedforbrownfathasdecreased.Theyfoundthat,“OutdoorworkersinnorthernFinlandwho__5__(expose)tocoldtemperaturehave__6__significantamountofbrownfatwhen__7__(pare)tosame­agedindoorworkers.”Theresearchwasconductedontwodifferentcontrolgroupsofmice.__8__groupwasinjectedwiththeproteinthathelpscreatebrownfat.Thisgrouplatergained30%lessweightafterbothgroupswerefedhigh­fatdiets.Theresearcherssaythiscouldbegoodnewsinthefightagainstobesity(肥胖症).Peoplewhoareobesehave__9__(low)levelsofbrownfatthanthinnerpeople.HeadresearcherHeiSookSulsaid,“Thisproteincouldbeeanimportanttargetforresearchintothetreatmentandpreventionofobesityandobesity­relateddiseases.”Sheadded,“Ifyoucansomehowincreaselevelsofthisprotein,youcould__10__(possible)losemoreweightevenifeatingthesameamountoffood.”eq\x(语篇解读：科学家发现在寒冷的环境下有助于减肥。)1．staying本句是“主句＋宾语从句”结构，从句中couldhelp是谓语部分，故stay是非谓语动词，作主语应用动名词形式表示状态。2．which空处引导非限制性定语从句，并在从句中作主语，用关系代词which指代前句话的内容。3．inresultin“导致，造成”。故填in。4．fortable此处是和constant并列作temperatures的定语，故用形容词形式。5．areexposedexpose是及物动词，句中没有宾语，判断用被动形式。beexposedto“暴露在……之下”，根据主谓一致原则，填areexposed。6．aasignificantamountof“大量的”。故填a。7．pared此处是“连词＋分词”结构，pare和句子主语outdoorworkers之间是被动关系，用过去分词，填pared。8．One从上文内容可知此处指两组中的一组，因位于句首，故填One。9．lower修饰名词levels，用形容词，根据句中than可知此处用比较级，故填lower。10．possibly修饰动词lose用副词形式，故填possibly。练(二)第四部分写作增分专练——练规范(限时：40分钟)Ⅰ.应用文写作假如你校这个周末举行60年校庆，校团委发出通知要招聘一批志愿者，要求如下：1．具有为校庆服务的热情，能为各方来宾做好服务工作；2．对学校历史比较了解，有较好的沟通能力，能作学校文化的传播者；3．汉语及英语标准，身体健康，周末每天工作8小时。假设你是李华，具备以上条件，请用英语写一封申请信。注意：1.词数80左右；2．信的格式已给出，不计入总词数。参考词汇：60年校庆the60thanniversaryofourschoolDearSirorMadam，Yourssincerely，LiHua参考范文：DearSirorMadam，Withtheingofthe60thanniversaryofourschool,I’dliketobeavolunteer.I’lltrymybesttoserveourdistinguishedguestswithenthusiasm.Ihaveagoodunderstandingofourschool.IamsureI’llnotonlyoffergoodservicetotheguests,butI’llalsoactasanexcellentmunicatorofourschool’shistoryandculture.What’smore,IcanspeakstandardChineseandEnglish.Ihavenotroubleworking8hoursadaythisingweekend.Lastbutnotleast,IwillvaluethechanceanddoallIcanifIamaccepted.Yourssincerely，LiHuaⅡ.概要写作阅读下面短文，根据其内容写一篇60词左右的内容概要。Everysummer,hundredsofthousandsofstudentstraveltoothercountrieslookingforworkandadventure.Mostoftheopportunitiesareinseasonalwork,mainlyconnectedwithtourismandagriculture.Thepayisusuallypoor,butmostpeopleworkabroadforthethrilloftravel.YoucanpickgrapesinFrance,workonafamilycampsite,andentertainkidsonAmericansummercamps,andofcourse,therearealwaysjobsinhotelsandrestaurants.Butitisnotaseasyasitusedtobetofindwork.“Unlessyouspeakthelanguageofthecountrywell,therewillbeveryfewopenings，”saysAntheaEllis,anadviseronvacationworkforstudents.“IfyouworkasanannywithafamilyinItaly,thenofcourseyou’llhavetospeakItalian.WhenyouarrivetowashdishesinarestaurantinParis,theownerwillexpectyoutospeakFrench.”Noteveryoneenjoystheexperience.SarahwasanassistantresponsibleforasummercampgroupoffortyAmericanchildreninEurope.Onechildlosthispassport;anotherbecameseriouslyillandwasflownhome;fourchildrenwerelostinMadridforawholeday;thewholegroupwasthrownoutofonehotelbecauseofthenoisetheymade.“Ididvisitalotofnewplaces，”shesays,“butitwasn’tworthit.Thepaywasawfulanditreallywasa24­hour­a­dayjob.Thekidsneverslept！”“Thetro