Unit 5 section Ⅰ Topic Talk-【创新教程】2024-2025学年高中英语必修第二册五维课堂课时作业（北师大版2019）

　　 UNIT５　HUMANSANDNATURE 　　　　SECTIONⅠTOPICTALK [基础性] Ⅰ．单词拼写 １．　　　　(过度使用)oftheInternethas becomeahouseholdworryinChina． ２．Hedelivereda　　　　 (讲座;演讲) onwildlifeprotection． ３．It　　　　(使震惊)metoseehowmy neighbourtreatedtheirchildren． ４．A 　　　　(人群)waswaitingforthe buswhentheaccidenthappened． ５．Herstrangebehaviourcausedagood dealof　　　　(评论)． ６．Theriverburstitsbanksand　　　　 (淹没)thevaley． Ⅱ．单句语法填空 １．Hebehavedasifnothing　　　　　　 　　 (happen)． ２．Thedirectorhad herassistantpick 　　　　 somehotdogsforthemeetＧ ing． ３．Idon􀆳tfeelequalto 　 　 　 　 (do) thejob． ４．Thelesscarefulyouare,the　　　　 (many)mistakesyouwil make． ５．　　　　firsttimeImadeaspeechon thestage,Ifeltnervous． ６．Charlesoftenattemptstoescape　　 　　 　 　 (fine)wheneverhebreaks trafficregulations． ７．Iagreewithyou　　　　acertainexＧ tent． ８．Theycansurvive　　　　 verylittle money． ９．Wedidn􀆳tknowwhythemachinestopped al 　　　　once． １０．PeopleintheworldrecogniseMaoZeＧ dong　　　　agreatman． [应用性] Ⅲ．完成句子 １．Doyourememberthattimeshe　　　 　 　 　 (接)my daughter whenI wasil? ２．Iwrotemywishonapieceofclothand 　　　　　　(把它系在)thetree． ３．Thistext　　　　　　 (由􀆺􀆺改编 而来)astoryinChineseliterature． ４．Mygarden　　　　　　 (覆盖着)so manybutterfliesthatIcouldhardlysee theflowers． ５．Thegiantpanda 　 　 　 　 　 　 　 　 (以 􀆺􀆺 著 名)anationaltreasureof China． ６．Whyareyousitting 　　　　　　　 (在􀆺􀆺的边缘)thebuilding?It􀆳sdanＧ gerous． [综合性] Ⅰ．阅读理解 A 　　About９７％ oftheworld􀆳swateris saltyandisfoundinouroceansandseas． But,aswecan􀆳tdrinkseawater,howcan itbeimportant? Everypartofourseasandoceans containsanamazingnumberofanimals and fish that live at different ocean depths．Mostofthedifferentspeciesof animalsandfishdependonsimpleplants fortheirfood．Thesesimpleplantscaled algae(海藻)－driftnearthesurfaceof theoceanandusesunlighttoturncarbon dioxideandwaterintofoodandoxygen． Infact,thealgaeproduceoverhalfofthe oxygen peoplebreathe．How important seawateris! 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀅰６２􀅰 必修第二册􀅰(BSD) Eachplantoranimalinourseasand oceansisanimportantlinkin afood chain． The algae are eaten in large amountsby microscopicanimals,which areinturnconsumedbylargeranimals． Thesefoodchainsaredelicatelybalanced． Thebadnewsaboutthefoodchains intheoceansisthattheyareunderthreat becauseofman．Peopleoncethoughtthat theoceansweresobigthatitdidn􀆳tmatＧ terifwedumpedrubbishintothem or caughthugequantitiesoffishandwhales forfood．Butwenowknowthisisnot trueandfishstocksintheoceanshave startedtodrop． Thankfuly,theworldistakingsteps toprotectthefutureofouroceansbyinＧ troducinginternationalagreementstoprotect marinehabitats．MostcountrieshaveinＧ troducedfishing restrictionsto protect fishstocksintheoceansandnewtechＧ niquesarebeingpioneeredtocopewith polution．Finaly,theimportanceofproＧ tectingoceansisbeing madeknownto morepeople．Thisisjustthebeginningof alongprocesstoprotecttheoceansfor ourfuture．Wedependontheoceansfor fishwhichareanimportantpartofthe humandiet．Howimportantseawateris! １．WhichofthefolowingistheproperorＧ derofthefoodchain? A．smalanimals→algae→microscopic animals→largeanimals→man B．algae→microscopicanimals→large animals→largeranimals→man C．smalanimals→algae→largeanimals →microscopicanimals→man D．microscopicanimals→algae→large animals→largeranimals→man ２．Peopleusedtothinkthattherubbish thrownintothesea　　　　． A．wouldn􀆳tharmthefishinthesea B．wouldchangethebalanceofthefood chain C．wouldbebrokendowninthesea D．wouldn􀆳tdomuchharmtothesea ３．Fromthepassage,welearnthat　　　． A．mostfishandseaanimalsliveatthe surfaceoftheseas B．itisverydifficulttobreakthebalＧ anceofafoodchain C．excessivefishinghascausedthedeＧ creaseinfishstocks D．itwon􀆳tbelongbeforetheproblems concerningoceanswilbesolved ４．WhichofthefolowingisNOTaway beingusedtoprotectoceans? A．Theuseofinternationalagreements． B．Forbiddingfishingto protectfish stocks． C．Theuseofnewtechniques． D．Raisingpeople􀆳sawarenessofthe needtoprotectoceans． B Theconnectionbetweenpeopleand plantshaslongbeenthesubjectofscienＧ tificresearch．Recentstudieshavefound positiveeffects．A studyconductedin Youngstown,Ohio,forexample,discovＧ eredthatgreenerareasofthecityexperiＧ encedlesscrime．Inanother,employees wereshowntobe１５％ moreproductive whentheir workplaces were decorated withhouseplants． 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀅰７２􀅰 UNIT５　HUMANSANDNATURE Theengineersatthe Massachusetts Institute of Technology (MIT)have takenitastepfurtherＧchangingtheactual compositionofplantsinordertogetthem toperform diverse,even unusualfuncＧ tions．TheseincludeplantsthathavesenＧ sorsprintedontotheirleavestoshow whenthey􀆳reshortofwaterandaplant that can detect harmful chemicals in groundwater．“We􀆳rethinkingabouthow wecanengineerplantstoreplacefuncＧ tionsofthethingsthat weuseevery day,”explainedMichaelStrano,aprofesＧ sorofchemicalengineeringatMIT． Oneofhislatestprojectshasbeento makeplantsglow(发光)inexperiments usingsomecommonvegetables．Strano􀆳s teamfoundthattheycouldcreateafaint light for threeＧandＧaＧhalf hours． The light,aboutoneＧthousandthoftheamount neededtoreadby,isjustastart．The technology,Stranosaid,couldonedaybe usedtolighttheroomsoreventoturn treesintoselfＧpoweredstreetlamps． Inthefuture,theteamhopestodeＧ velopaversionofthetechnologythatcan besprayedontoplantleavesinaoneＧoff treatmentthatwouldlasttheplant􀆳slifeＧ time．TheengineersarealsotryingtodeＧ velopanonandoff“switch”wherethe glow wouldfadewhenexposedtodayＧ light． Lightingaccountsforabout７％ of thetotalelectricityconsumedintheUS． Sincelightingisoftenfarremovedfrom thepowersource(电源)－suchasthedisＧ tancefromapowerplanttostreetlamps onaremotehighway－alotofenergyis lostduringtransmission(传输)．Glowing plants could reduce this distance and thereforehelpsaveenergy． ５．Whatisthefirstparagraphmainlyabout? A．Anewstudyofdifferentplants． B．Abigfalincrimerates． C．Employeesfromvariousworkplaces． D．Benefitsfromgreenplants． ６．Whatisthefunctionofthesensors printedonplantleavesby MITengiＧ neers? A．Todetectplants􀆳lackofwater． B．Tochangecompositionsofplants． C．Tomakethelifeofplantslonger． D．Totestchemicalsinplants． ７．Whatcan weexpectoftheglowing plantsinthefuture? A．TheywilspeedupenergyproducＧ tion． B．Theymaytransmitelectricitytothe home． C．TheymighthelpreduceenergyconＧ sumption． D．Theycouldtaketheplaceofpower plants． ８．Whichofthefolowingcanbethebest titleforthetext? A．Canwegrowmoreglowingplants? B．Howdowelivewithglowingplants? C．Couldglowingplantsreplacelamps? D．HowareglowingplantsmadepoluＧ tionＧfree? 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀅰８２􀅰 必修第二册􀅰(BSD) Ⅱ．完形填空 Theearthquakewasoverandthecity wasinruins．Ihadnochoicebuttowalk homeasalthe　１　hadstoppedasareＧ sultofthequake．On my wayhomeI 　２　anoldladyatabakerygivingout freebread,whichmademyheartwarm．A manwasholdingasignsaying,“Pleaseuse ourtoilet．”Hewas　３　hishousefor peopletogototherestroom． Myfriend,　４　wantedtobeofhelp toothers,stoodinthecoldwithasign, “Ifyoudon􀆳t　５　amotorcycle,I􀆳lbe gladtodriveyouhome．”AndthenIsaw himpickupanoldmananddrivehimal thewaytoafarawayplace! ThenthenextdayIdrovetohavemy car　６　．Therewasnotenough　７　 andmanygasstationswereclosedorhad verylonglines．Igotworried,sinceIwas 　８　fifteencars．Finaly,whenmyturn came,themansmiledandsaid,“　９　 thissituation,weareonlygiving ＄３０ worthofgasperperson．Isthatalright?” “　１０　．It􀆳snicethatwearealableto 　１１　,”Isaid．Hissmilegavemeso muchcomfort． AttheescapecentreIsaw a man 　１２　whenpeoplebroughtfoodtohim． Itwasthefirsttimeinthreedaysthat foodhadbeenbroughttotheircentre． However,afterhecleanedupthetears, hisnext　１３　surprisedme．“Iamvery gratefulthatweareprovidedwithfood． Butpeopleinthecitynexttoushaven􀆳t 　１４　anyfoodatal．Pleasegotothat centreaswel．”Hearingthat,Irealised therewasabrightfutureontheother sideofthis　１５　． １．A．life　　　　　　　B．business C．rescue D．traffic ２．A．noticed B．missed C．ignored D．caught ３．A．opening B．seling C．repairing D．building ４．A．who B．whom C．which D．he ５．A．buy B．care C．matter D．mind ６．A．usedup B．takenup C．filedup D．washedaway ７．A．gas B．information C．food D．water ８．A．behind B．between C．among D．beneath ９．A．Exceptfor B．Togetherwith C．Insteadof D．Becauseof １０．A．Notatal B．Ofcourse C．Noway D．Nevermind １１．A．share B．offer C．learn D．choose １２．A．crying B．eating C．smiling D．singing １３．A．ways B．roles C．words D．promises １４．A．bought B．wasted C．prepared D．received １５．A．disaster B．chance C．city D．centre 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀅰９２􀅰 UNIT５　HUMANSANDNATURE ４．F　[细节句.上文提到如果你周末有空,邀请你的朋 友到外面去,这样你的心思就会从电脑上移开,这是 在介绍用其他活动来代替使用电脑,从而减少使用电 脑的次数.F项(如果在工作日有问题,给你的朋友打 电话或亲自去求助)分析了在工作日的做法,符合逻 辑.E选项是本题的干扰项,放在设空处会和上一句 “Thiswildistractyoufromthecomputer”意思重复. 故选F.] ５．C　[细节句.根据上句“AlternativelycreateashutＧ downtimeronyourdesktop．”可知可以在你的电脑桌 面上创建一个关机定时器,C 项(这可以被编程设置 在指定时间内关闭你的电脑)符合逻辑,空前的shutＧ downtimer是关键词.故选C.] Ⅲ．[语篇解读]　本文是一篇记叙文,主要讲述了互联 网的发明者 蒂 姆􀅰伯 纳 斯 􀅰 李 对 互 联 网 未 来 发 展 的 担忧. １．inventor　[Its后要用名词,此处指蒂姆􀅰伯纳斯􀅰 李,故填inventor.] ２．on　[具体到某一天用介词on.故填on.] ３．saying　[aletter与say之间是逻辑上的主谓关系,要 用现在分词形式.故填saying.] ４．better　[此处暗含与过去作比较的意味,如果政府和 公司联合起来就会建立一个更好的互联网,故用比较 级better.故填better.] ５．where　[先行词是a“mirrorofhumanity(人性)”,带 有抽象的地点的意义,在后面的定语从句中充当类似 地点状语的作用,故用 where引导.故填 where.] ６．tokeep　[不定式短语作目的状语.故填tokeep.] ７．areused　[use与socialmedia之间是逻辑上的动宾 关系,要用被动语态.再根据此空前后用的是一般现 在时可知,用areused.故填areused.] ８．hasseen　[主语为 Thepastfewyears(过去的几年), 要用现在完成时.故填hasseen.故填hasseen.] ９．personal　[用形容词personal修饰名词information. 故填personal.] １０．a　[此处表示“一个更好更安全的网络”,用不定冠 词a表示泛指.故填a.] UNIT５　SECTIONⅠ 基础性 Ⅰ．１．Overuse　２．lecture　３．shocked　４．crowd ５．comment　６．flooded Ⅱ．１．hadhappened　２．up　３．doing　４．more　５．The ６．beingfined　７．to　８．on　９．at　１０．as 应用性 Ⅲ．１．pickedup　２．tieditto　３．isadaptedfrom ４．wascoveredwith　５．isknownas　６．ontheedgeof 综合性 Ⅰ．A．[语篇解读]　海洋对人类的生存起到了至关重要 的作用,但是人类在很长一段时间内对海洋造成了污染 和破坏,现在各国都在努力采取措施保护海洋. １．B　[细节理解题.根据第三段内容可知,微生物吃海 藻,然后逐次地大一点的动物吃小一点的动物,最后 被人吃掉.故选B.] ２．D　[细节理解题.根据第四段第二句可知,过去人类 认为将垃圾倒入大海不会对大海造成破坏.故选D.] ３．C　[推理判断题.根据第四段最后两句可知,现在人 类已经认识到原来的做法是不正确的,而且鱼的储存 量开始下降,可知过度的捕捞造成了这一结果.故 选C.] ４．B　[细节理解题.根据最后一段第二句可知,很多国 家限制鱼类的捕捞,而不是禁止,故 B项不正确.故 选B.] B．[语篇解读]　本文是一篇说明文.介绍了与植物有 关的研究,重点介绍了发光植物的相关内容. ５．D　[段落大意题.根据第一段第二句“Recentstudies havefoundpositiveeffects．”及本段中的“greenerareＧ asofthecityexperiencedlesscrime”和 “employees wereshowntobe１５％moreproductivewhentheir workplacesweredecoratedwithhouseplants”可知,D 选项正确.故选B.] ６．A　[细节理解题.根据第二段第二句中的“TheseinＧ cludeplantsthathavesensorsprintedontotheirleavＧ estoshowwhenthey􀆳reshortofwater”可知,A 选项 正确.故选 A.] ７．C　[推理判断题.根据最后一段的内容尤其是最后 一句“Glowingplantscouldreducethisdistanceand thereforehelpsaveenergy”可推知,在未来发光的植 物可能有助于减少能源的消耗.故选C.] ８．C　[标题判断题.文章第一段点明植物的积极作用; 第二段是有关植物的其他方面的功能的研究;第三段 说明最新的研究表明植物可以发光;第四段是有关将 来要开发的一种用在植物叶子上的技术及研究植物 发光是否可以“打开”和“关上”;第五段表述能量在传 输中损失很多,或许发光植物可以解决这一问题.故 C选项(发光的植物能代替灯吗?)最能凸显本文主 题.故选C.] Ⅱ．[语篇解读]　本文是一篇记叙文.地震给人们带来 了无穷的灾难,但是震后人与人之间互帮互助的真挚情 感让我们看到了人性中闪光的一面.地震无情,人间有 爱,让我 们 跟 随 作 者 一 起 来 领 略 灾 后 人 们 的 暖 心 之 举吧. １．D　[不得不走回家是因为震后“交通”瘫痪,故选trafＧ fic.故选 D.] ２．A　[走在回家的路上作者注意到(notice)一位老妇人 正在免费发放面包.故选 A.] ３．A　[此处应该是他打开(open)家门让人们去洗手间. 故选 A.] ４．A　[先行词是 Myfriend指人,关系词在从句中作主 语,故用 who引导非限制性定语从句.故选 A.] ５．D　[“Ifyoudon􀆳tmind．．．(如果你不介意􀆺􀆺)”为 常用固定句式.故选 D.] ６．C　[由下句中的gasstations可知,作者是去给自己 的汽车加油,故用filup(加满,充满).故选C.] ７．A　[由 gasstations可知,应该是汽油(gas)油量不 足.故选 A.] ８．A　[作者很担心,因为他前面还有１５辆汽车等候加 油,也 就 是 说,他 排 在 １５ 辆 汽 车 之 后(behind).故 选 A.] ９．D　[句意:因为(becauseof)这种情形,我们只给每个 人价值３０美元的汽油.故选 D.] １０．B　[由空格后作者的话“It􀆳snicethatwearealable to．．．”可知,作者回答“当然(ofcourse)”.故选B.] 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀅰２８􀅰 必修第二册􀅰(BSD) １１．A　[句意:这样很好,我们都能分到汽油.故选 A.] １２．A　[由后文中的afterhecleanedupthetears可知, 作者看到有个男人在“哭(cry)”.故选 A.]. １３．C　[由引号中该男子的话可知,此空要填 words(话 语).故选C.] １４．D　[邻市的人们还没有收到(receive)任何食物.故 选 D.] １５．C　[由上文中的Butpeopleinthecitynexttous可 知此处是说,这个城市的另一侧会有光明的未来. 故选C.] SECTIONⅡ 基础性 Ⅰ．１．waves　２．frightened　３．mystery　４．poetry ５．horrible　６．soul Ⅱ．１．terrible　２．going　３．at　４．to　５．toknow ６．The　７．were　８．from 应用性 Ⅲ．１．pickedhimup　２．Asyouknow　３．whyyouare solate　４．inthedirection　５．isequalto　６．wascovＧ eredwith 综合性 Ⅰ．A．[语篇解读]　本文是一篇说明文.本文讲述了北 极熊的祖先为适应环境而不断改变自身特征,而现在的 这些特征却让北极熊陷入困境. １．C　[推理判断题.根据第四段中的“Inamomentitis over,andthebeareatshisfirst mealinnearlya week．”可知,这头熊吃了近一周以来的第一顿饭,可 见它非常饥饿.因此,关于前四段提到的白熊,可以 推断出“它快饿死了”.故选C.] ２．A　[细节理解题.根据第五段中的“Polarbearsrule thefrozensea,buttheirancestors weren􀆳talways builtforiceandsnow．ThefirstArcticbearswere brownbears,aspeciesthatincludesgrizzlybears．”可 知,最早的北极熊不是白熊,是棕熊,包括灰熊,颜色 要深一些.因此,北极熊的祖先是一种皮毛颜色较深 的物种.故选 A.] ３．A　 [推 理 判 断 题.根 据 倒 数 第 二 段 中 的 “Sadly, these characteristics may now threaten the polar bear􀆳ssurvival．AsseaicemeltsduetoglobalwarＧ ming,polar bearsarefrequentlyforcedto come ashore．”可知,随着气候变暖,北极熊可以狩猎的冰面 范围在逐渐减少,使它们生存面临威胁.因此,北极 熊挣 扎 着 生 存 的 原 因 是 它 们 正 在 失 去 猎 场. 故 选 A.] ４．C　[主旨大意题.通读全文,尤其是根据第五段中 “ThefirstArcticbearswerebrownbears,aspecies thatincludesgrizzlybears．”第六段中“Nooneknows forsure whythesebearstraveledtosuchacold place．Scientiststhinkthey mighthave wandered northlookingforfood．”和 倒 数 第 二 段 中 的“Sadly, these characteristics may now threaten the polar bear􀆳ssurvival．AsseaicemeltsduetoglobalwarＧ ming,polar bearsarefrequentlyforcedto come ashore．”可知,北极熊的祖先皮毛颜色更深,它们可能 是为了寻找食物而来到北极,为适应环境而不断改变 自身特征.由于全球变暖,海冰融化,北极熊生存面 临威胁,文章暗含北极熊误入北极的黑暗的过去.因 此,文本的最佳标题是 C项“ThedarkpastofthepoＧ larbear(北极熊的黑暗过去)”.故选C.] B．[语篇解读]　本文是一篇应用文.文章主要介绍了 以金枪鱼为例子的一些物种的种群数量正在恢复,但是 仍有很多其他物种濒危,我们应该继续努力. ５．C　[细节理解题.由第一段中“SeveralimportanttuＧ na(金枪鱼)specieshavesteppedbackfromtheedgeof extinction．”可知,几个重要的金枪鱼物种已经从灭绝 的边缘退了回来.也就是说,一些金枪鱼的种群数量 开始恢复.故选C.] ６．D　[词义猜测题.由画线词后文“Forexample,more thanathirdoftheworld􀆳ssharksarestilthreatened withextinctionduetooverfishing,habitatloss,and climatechange．(由于过度捕捞、栖息地丧失和气候变 化,世界上超过三分之一的鲨鱼的种群数量仍面临灭 绝的威胁)”可知,还有其他海洋生物仍有濒临灭绝的 危险.由 此 推 知,画 线 词imperiled的 意 思 是“濒 危 的”,与endangered意思相同.故选 D.] ７．B　[推理判断题.由第四段中“WeneedtokeepdoＧ ingwhat􀆳sworking．(我们需要继续做有效的事情)” 可知,这个科学家认为我们要接着实施那些有效的措 施,即保护金枪鱼还有很长的路要走.故选B.] ８．D　[推理判断题.由第五段中“TheIUCN,whichdeＧ terminestheworld􀆳smostendangeredspeciesonits RedListofThreatenedSpecies,alsoannouncedatthe meetingthatsomeanimalsaremovingintheotherdiＧ rection,ontotheRedList．(世界自然保护联盟在其 濒危物种红色名录中确定了世界上最濒危的物种,并 在会议上宣布,一些动物正朝着另一个方向移动,进 入红色名录)”可知,作者提到这种蜥蜴是作为例子, 目的是论证一些动物正朝着另一个方向移动,进入红 色名录.故选 D.] Ⅱ．[语篇解读]　这是一篇说明文,讲述了如何获得好 的睡眠. １．D　[关联逻辑法解题.根据上文“Qualitysleep－and gettingenoughofitattherighttimes－isasimporＧ tanttosurvival(生存)asfoodandwater．”并结合下 文可知,设空处应该是获得好睡眠的建议.故选 D.] ２．G　[词汇锁定法解题.上句提到avoidcaffeine,呼应 小标题,G项提到“禁止吸烟”,呼应小标题 AvoidcafＧ feine,alcohol,nicotine(尼 古 丁)中 的 nicotine. 故 选 G.] ３．E　[设 题 位 置 法 解 题.根 据 小 标 题 Createagood sleepingenvironment可知,这一部分主要是讲营造好 的睡眠环境,比较选项可知,E 选项是说好的环境对 睡眠的重要性,符合语境.故选E.] ４．F　[关联逻辑法解题.由上句“Takeabath,reada book,watchtelevision,orpractiserelaxationexerciＧ ses．”可知,应做些睡前放松的活动,也就是不做增加 压力的事.故选F.] 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀪋 􀅰３８􀅰 参考答案