2019年高中英语unit3lifeinthefuturesectionⅱwarmingup 15页

SectionⅡWarmingUp&Reading-LanguagePoints一、这样记单词记得准·写得对记得快·记得多Ⅰ.基础词汇1.aspectn．　　　方面；层面2.guiden.指导；向导；导游vt.指引；指导3.toleratevt.容忍；忍受4.lackvt.&vi.缺乏；没有n.缺乏；短缺的东西5.carriagen.运输工具；四轮马车；客车6.pressvi.&vt.按；压；逼迫n.按；压；印刷；新闻7.fastenvt.系牢；扎牢8.flashvt.&vi.(使)闪光；(使)闪现9.switchn.开关；转换vt.转换10.timetablen.时间表；时刻表Ⅱ.拓展词汇1.constantadj.时常发生的；连续不断的→constantlyadv.不断地2.previousadj.在前的；早先的→previouslyadv.以前；早先3.uncertainadj.不确切的；无把握的→certain(反义词)确定的；有把握的4.stewardn．乘务员；服务员→stewardessn．女乘务员5.surroundingadj.周围的→surroundingsn．周围的事物；环境→surroundvt.包围；围绕6.adjustmentn．调整；调节→adjustvt.调整；调节7.optimisticadj.乐观(主义)的→optimismn．乐观；乐观主义1.lackvi.&vt.缺乏；没有n．缺乏；短缺的东西[同义]　beshortof缺少……[反义]　berichin在……方面富有/丰富2.pressvi.&vt.按；压；逼迫n．按；压；印刷；新闻[联想]　press家族①pressuren．　　　　　压力②impressv.给……留下深刻印象③impressionn.印象④impressiveadj.令人印象深刻的⑤expressv.表达⑥expressionn.表达；表情3.fastenvt.系牢；扎牢[规律]　形容词＋后缀en→动词[联想]　后缀en动词一览①deepen加深②widen加宽③strengthen加强④sharpen使锋利4.timetablen．时间表；时刻表[规律]　名词＋名词→合成名词[联想]　常见合成名词集锦①seafood海产品②viewpoint观点③waterfall瀑布④bookstore书店⑤bookmark书签⑥hometown家乡5.stewardn．乘务员；服务员→stewardessn．女乘务员[联想]　“男女”有别①waiter男招待→waitress女招待②actor男演员→actress女演员③host男主人→hostess女主人二、这样记短语n记牢固定短语多积常用词块1.take_up　　　　　拿起；接受；开始；继续2．as_a_result结果；因此3．suffer_from患有(疾病等)；为……受苦4．be_similar_to与……相似5．(a)_lack_of_...……方面的短缺6．in_no_time立刻7．be_back_on_one’s_feet(困境后)恢复；完全复原8．lose_sight_of_...看不见……9．in_all_directions朝四面八方10．sweep_up打扫；横扫11．provided_..._with_...为……提供……12．slide_into(快捷而悄声地)移动；溜进……1.remind...constantlythat..不断提醒……2．benervousanduncertain感到紧张和心神不定3．transport...safelyinto...安全地把……送入……4．thespacestewardess空姐5．feelsleepy昏昏欲睡6．makethenecessaryadjustmenttothisnewsituation对这种新情况做必要的调整7．fastenone’ssafetybelt系好某人的安全带8．fromunderthefloor从地板下面9．fallfastasleep很快睡着10．financeandcurrency金融与货币n三、这样记句式先背熟再悟通后仿用1.Atfirstmynewsurroundingsweredifficulttotolerate.开始的时候，新的环境让我难以忍受。在“主语＋be＋adj.＋todo”结构中，不定式常用主动形式表示被动意义。Suchabookasyoushowedmeis_difficult_to_understand.你给我看的这类书是很难理解的。2.Theairseemedthin,asthoughitscombinationofgaseshadlittleoxygenleft.空气似乎很稀薄，好像在混合气体中剩下的氧气很少。asthough/if意为“好像”，在句子中引导方式状语从句。Everythinginmychildhoodcrowdedmymindas_though/if_they_had_just_happened.童年的一切一下子涌入我的脑海，仿佛刚刚发生似的。3.Justrelax,sincethereisnothingplannedonthetimetabletoday.你可以好好休息一下，因为按时间表我们今天没有任何出行计划。本句结构为“Therebe＋名词/代词＋非谓语动词”。I’mverygladthatthere_are_so_many_American_students_lovingChinese.(2015·天津高考书面表达)我很高兴有这么多美国学生喜欢汉语。1．(教材P17)FIRSTIMPRESSIONS第一印象impressionn．印象thefirstimpression　　　　　第一印象leave/makea(n)...impressiononsb.给某人留下……印象①Myfirstimpressionofhimwasthathewasakindandthoughtfulyoungman.我对他的第一印象是他是一个善良且体贴的年轻人。②PremierLiKeqiangmadeagoodimpressiononthepeopleallovertheworld.李克强总理给全世界人民留下了良好的印象。nimpressvt.　　　　　给……留下深刻印象；使铭记impresssb.withsth.某事(物)给某人留下深刻印象beimpressedwith/by对……印象深刻；被……所打动impresssth.on/uponsb.使某人铭记某事(物)；使某人对某事(物)印象深刻③Williamswas_impressed(impress)withBenjaminandgavehimtwoclassicbooksonpaintingtotakehome.(2017·浙江高考)威廉姆斯对本杰明印象深刻，给他两本经典的绘画图书，让他带回家。④Fatherimpressedtheimportanceofworkinghardon/uponme.父亲使我铭记努力工作的重要性。2．(教材P17)IstillcannotbelievethatIamtakingupthisprizethatIwonlastyear.我还是无法相信我是在接受去年获得的这个奖励。takeup拿起；接受；开始；继续；占据写出下列句中takeup的含义①Thegirltookupherbagandlefttheroom.拿起②Shetookuphisofferofadrink.接受③AttheageofsixtyhetookupthestudyofRussian.开始④Joantookupthestorywhenhersisterforgotthenextdetail.继续⑤Thatbigclockwillhavetogo;ittakesuptoomuchspaceinthesmallhall.占据takeoff　　　　　　脱掉；起飞；成名；开始成功takein接受；收留；理解；明白；欺骗takeon雇用；呈现(新面貌等)；承担takeover接管；接收⑥Someinsectstakeonthecolouroftheirsurroundingstoprotectthemselves.有些昆虫为了自我保护会随着周围环境改变自身颜色。⑦Internetshoppingwillreadytakeoffwhenpeoplemakesurethatitissafe.当人们确信了网购的安全性时，它就已经成功了。3．(教材P17)Thisissimilartothe“jetlag”yougetfromflying,butitseemsyoukeepgettingflashbacksfromyourprevioustimeperiod.这就与你乘坐飞机会产生“时差反应”相似，所不同的是，在你的脑子里似乎会不断地闪现以前的时光。previousadj.(仅用于名词前)在前的；早先的npreviousto　　　　　在……之前(其中to是介词)previouslyadv.先前地；早先①Thisisthecorrectversionandthepreviousversionshouldbeignored.(2017·天津高考)这是正确的版本，以前的版本应该忽视掉。②Previoustoleaving(leave)forFrance,hestudiedalotaboutthecountry.他在启程前往法国之前，对这个国家做了很多研究。③Thebuildinghadpreviously(previous)beenusedasahotel.这座楼房早先曾用作旅馆。4．(教材P18)Atfirstmynewsurroundingsweredifficulttotolerate.开始的时候，新的环境让我难以忍受。surroundingsn．周围的事物；环境(1)surroundingadj.　　　　　　附近的；周围的(2)surroundvt.环绕；围住；包围besurroundedby/with...由……围着/包围①Determiningwhereweareinrelationtooursurroundingsremainsanessentialskillforoursurvival.(2017·江苏高考)在涉及有关我们周围的环境时，如何定位我们所处的位置依然是我们生存的一项基本技能。②Policearestillsearchingthetownandsurrounding(surround)areasforthechild.警方仍在小镇及周边地区搜寻那个小孩。③WhenAuntRuthwasathome,Iwas_surrounded(surround)bylove.露丝姑姑在家时，对我爱护有加。toleratevt.容忍；忍受Toleratedoingsth.容忍做某事①Icantoleratethehousebeinguntidy,butIhateitifit’snotclean.我可以容忍房间里不整齐，但是我讨厌房间里脏乱不堪。②Ourteachercannottoleratecheating(cheat)onexams.我们的老师不能容忍考试作弊。[名师点津]　表示“容忍；忍受”的动词(短语)还有：bear,stand和putupwith等。5．(教材P18)Hitbyalackoffreshair,myheadached.n由于缺乏新鲜空气，我感到头痛。lackvi.&vt.缺乏；没有n．缺乏；短缺的东西(1)(a)lackof...　　　　　缺少……forlackof...由于缺乏……(2)lackingadj.缺乏；缺少belackinginsth.缺少某物①Jim’srealproblemisthathelacksconfidence.吉姆的真正问题是他缺乏自信。②It’snotthatexercisemakesyouhealthy;it’smorethata_lack_ofexerciseleavesyourbodyweakandeasilyaffectedbydisease.并不是锻炼使你健康，更应该是缺乏锻炼让你身体虚弱，容易遭受疾病的侵袭。③Moreandmorehighrisebuildingshavebeenbuiltinbigcitiesfor_lack_ofspace.因为缺乏空间，大城市建起越来越多的高楼大厦。④ThoughJackwaslacking_inexperience,hemadeupforitinenthusiasm.虽然杰克缺乏经验，但是他以满腔的热情来弥补不足。6．(教材P18)Thesecarriagesfloatabovethegroundandbybendingorpressingdowninyourseat,youcanmoveswiftly.这些气垫车是在地面上方飘浮着的，只要在座位上把操纵杆打弯或压下，你就可以迅速地移动。pressvi.&vt.按；压；逼迫n．按；压；印刷；新闻；新闻界(常与定冠词the连用)写出下列句中press的词性及含义①Thedoctorgentlypressedhisstomach.v.按②Theyarepressingustomakeaquickdecision.v.逼迫③Membersofthepresswerenotallowedintothemeeting.n.新闻界7．(教材P18)However,IlostsightofWangPingwhenwereachedwhatlookedlikealargemarketbecauseoftoomanycarriagesflyingbyinalldirections.但是，当我们到达一个看上去像是大市场的地方时，由于有太多气垫车在身边朝四面八方飞奔，我看不见王平了。losesightof...看不见……①Ilostsightofhimbutcouldstillhearhisfootsteps.我看不见他了，但还能够听到他的脚步声。ncatchsightof　　　　　　看到……atthesightof看见……时atfirstsight初次看到时；乍一看in/withinsight在视野内；看得见outofsight在看不见的地方；消失comeintosight进入视野；映入眼帘②Thewindpartedthesmokejustenoughforhimtocatch_sight_ofSibson.风吹散了烟使得他正好能够看见Sibson。③Nowandthen,oneortwomotorcycleswillcome_into_sightandyourearsarefilledwiththeirnoises.你会时不时地看到一两辆摩托车，耳旁充斥着它们的噪音。8．(教材P18)ThenWangPingflashedaswitchonacomputerscreen,andatableandsomechairsrosefromunderthefloorasifbymagic.然后王平使电脑荧屏上的开关闪了一下，于是一张桌子和几把椅子就像变魔术般地从地板下面升了上来。switchn．开关；转换vt.转换(1)makeaswitch　　　　　改变(2)switchoff切断(电流等)switchon接通(电流等)；开(电器)switch(sth.)tosth.(把……)转换到……①Wehadtomakeaswitchinourarrangement.我们不得不改变我们的安排。②Idon’tlikethisTVprogramme.Let’sswitchtoanother.我不喜欢这个电视节目。让我们换个频道吧。③Heswitchedoffthelightastherewasnooneintheroom.他把灯关了，因为房间里没有人。1．Atfirstmynewsurroundingsweredifficulttotolerate.开始的时候，新的环境让我难以忍受。该句型是“主语＋be＋adj.＋不定式”结构，其中mynewsurroundings是tolerate的逻辑宾语，不定式用主动形式表示被动意义。使用此结构须具备两个前提条件：n(1)常用形容词有：difficult,hard,easy,good,comfortable,pleasant,interesting,exciting等。(2)不定式和句子的主语构成逻辑上的动宾关系；若不定式为不及物动词，其后应该加相应的介词。①Thedisappearanceofdinosaursisnotnecessarilycausedbyastronomicalincidents.Butalternativeexplanationsarehardtofind.(2017·江苏高考)恐龙的消失不一定是由天文学事件导致的。但是其他的解释也很难找到。②Ilikegettingupveryearlyinsummer.Themorningairissogoodto_breathe(breathe)．在夏季我喜欢很早起床。早上的新鲜空气呼吸起来真好。③Thearmchairlooksratherhard,butinfactitisverycomfortabletositin.这扶手椅看上去很硬，但坐上去很舒服。2．Theairseemedthin,asthoughitscombinationofgaseshadlittleoxygenleft.空气似乎很稀薄，好像在混合气体中剩下的氧气很少。asthough意为“好像”，在句中引导方式状语从句。asthough/if的用法如下：类型表语从句接在look,seem等动词之后状语从句接在常见的实义动词之后从句语气及时态陈述语气所述是真实的或极有可能发生虚拟语气所述不真实或极少有可能发生与现在事实相反过去时(be动词常用were)与过去事实相反过去完成时(haddone)与将来事实相反过去将来时(would/could/mightdo)①Itlooksasthough/ifitisn’tcleanenoughtoswimhere.看起来这儿的水好像不够干净，不宜游泳。②Firsthepicksoutthelacesandeatsthemasthough/iftheywere(be)noodles.他先拿起鞋带来吃，好像在吃面条。n③Isuggestthatyoushouldstayhereasthough/ifnothinghad_happened(happen)．我建议你应该待在这儿，好像什么事也没有发生过。Ⅰ.单句语法填空1．HisfluentEnglishandprofoundknowledgemakeadeepimpressiononothers.2．Theaccidentcaused3deathsand20gotinjured,whichhappenedprevioustohisarrivalthere.3．Aftertheexplosion,thearmyblockedthesurrounding(surround)areaandforbadanyoneenteringit.4．Ifastudentlacks(lack)themotivationtostudy,heorshewillquicklybecometiredofstudying.5．Thoseairconditionersareourbestsellingproductsbecausetheyareeasyto_handle(handle)andworkwithlittlenoise.6．Ican’ttoleratespeaking(speak)toyourmotherinsucharudemanner.7．Schoolhasstarted,butIfeelmoreandmoreuneasyasifIwere(be)inaforeigncountrynow.8．Wefeelquiteunfitbecausethebankis_pressing(press)usforrepaymentoftheloan.Ⅱ.选词填空asif，previousto，sweep...up，takeup，switchoff，besurroundedby，impress...with，atfirstsight1．Heimpressedherwithhissincerity,whichmovedherdeeply.2．(2015·陕西高考单选)Peterwilltake_uphispostastheheadofthetravelagencyattheendofnextmonth.3．Thehousewas_surrounded_bybigtrees,whichsheltereditfromseveresunshine.4．Wefellinlovewiththesmartphoneat_first_sight,_butmuchtoourregret,itwastoodear.5．Jackwasn’tsayinganything,buttheteachersmiledathimas_ifhehaddonesomethingveryclever.6．Previous_tocominghere,heworkedinAmerica.n7．Iswitched_offallthelightsbeforeIwentout.8．Beforemovingintohisnewapartment,Jonesweptitupthoroughly.一、全练语言点，基稳才能楼高Ⅰ.单词拼写1．Forsomereasonshegottheimpression(印象)thatyoudidn’tlikeher.2．Ihaveprevious(早先的)experienceofthistypeofwork.3．Thesurrounding(周围的)sceneryattractedmyattention.4．Ifyoutolerate(容忍)aperson,youaccepthimalthoughyoudonotparticularlylikehim.5．Theycarriedonwiththeirexperimentinspiteofthelack(缺乏)ofequipment.6.(2017·全国卷Ⅰ)Moransaysoneoftheproblemswithjazztodayisthattheentertainmentaspect(方面)ofthemusichasbeenlost.7．Theywerebothuncertain(无把握的)aboutwhattodoandwenttotheiruncleforhelp.8．Hefastened(系紧)hiscoatandhurriedouttothecinema.9．Ihavemadeafewadjustments(调整)tomystudyplan.10．Moreyoungpeoplearemakingtheswitch(转换)tojobseekingonline.Ⅱ.单句改错1．Deeplyimpressedonitsbeauty,IfellinlovewithGuilin.on→by/with2．Lackingnecessarysocialexperience,teenagerstendtobetakenupbyillpeople.up→in3．Ittookmeafewweekstogetusedtomynewsurrounding.surrounding→surroundings4．Previoustogoabroad,hestudiedinParis.go→going5．Noneofhisplansevercomesthroughbecausehelacksindetermination.去掉in6．Theschoolcannottoleratetalkloudlyinclass.talk→talking7．Althoughtheladylookselegant,actuallysheishardtogetalong.along后加with8．Hetreatshiseldersisterasthoughsheisastranger.is→wereⅢ.补全句子1．Tomydelight,mypreviousexperiencehas_made/left_a_good_impression_ontheninterviewer.令我高兴的是，我以前的经验给面试官留下了一个好印象。2．Onthecontrary,smartphonesnotonlytake_up_our_valuable_time,_butalsodogreatharmtoourhealth.相反，智能手机不仅占据了我们宝贵的时间，而且对我们的健康造成危害。3．There_has_been_no_time_leftforustothinkitover.我们已经没有时间来仔细考虑了。4．For_lack_of_human_protection,_thenumberofYangtzeFinlessPorpoiseisbecomingsmallerandsmaller.由于缺乏人类保护，长江江豚的数量变得越来越少。5．Onlyashortsightedmanwilllose_sight_oftheimportanceofeducation.只有鼠目寸光的人才会看不见教育的重要性。6．Insomeexperts’opinion,livingconditionsontheMarsare_very_hard/difficult_to_tolerate.一些专家的观点是火星上面的生存状况很难忍受。7．Ayoungcoupleinaboatwereeating,talkingandlaughingloudlyas_if_they_had_been_the_only_people_in_the_world.船上的一对年轻人吃着东西，高声地谈笑着，好像这个世界上只有他们自己。8．(2015·湖南高考书面表达)Afterlearningwhat_situation_I_was_in,_myteacher,Michaelencouragedmetostepoutoftroublebravelyandconfidently.得知我所处的境况后，我的老师迈克尔鼓励我勇敢地、充满自信地走出困境。Ⅳ.课文语法填空LiQiangcouldn’tbelievethathehadtraveledtotheyearAD30081.inatimecapsule.2.Becausethiswashisfirsttimetrip,hewasworriedand3.unsettled(settle)andhealsosufferedfrom“timelag”．Besides,he4.was_hit(hit)bythelackoffreshair.Hisguide,WangPing,whowasvery5.understanding(understand),gavehimsomegreentabletsandamask,6.whichhelpedhimovercometheproblems.However,LiQiangexperiencedsomethingnew.Heflew7.abovethegroundinahoveringcarriage.8.Arriving(arrive)home,hewasshownintoalarge,brightcleanroomwithawalloftrees.Aftereatingsomething,hefell9.fastasleepinthebedthat10.was_produced(produce)fromthefloor.Ⅴ.串点成篇微表达n王先生是一位有经验的工人，他工作努力。他经常(constantly)帮助和指导(guide)我们操作新设备。他给我们留下了很好的印象(impression)。令我们遗憾的是，他上个月生病了，住院期间他忍受(tolerate)了巨大的痛苦。幸运的是，他现在完全康复(bebackonone’sfeet)了。他希望继续(takeup)以前的(previous)工作。我们很高兴他是一个乐观的(optimistic)人。Mr._Wang_is_an_experienced_worker_and_works_hard._He_constantly_helps_and_guides_us_in_operating_new_equipment._He_left_a_good_impression_on_us._To_our_regret,_he_fell_ill_last_month._He_tolerated_great_sufferings_when_in_hospital._Fortunately,_he_is_back_on_his_feet_again_now._He_hopes_to_take_up_his_previous_work._We_are_happy_because_he_is_an_optimistic_man.二、勤练高考题型，多练自能生巧Ⅰ.完形填空Recentlywecarriedoutasurveyof1,000peoplefromdifferentcountriestofindoutwhattheythink__1__willbelikeinthefuture.Theresultsclearlyshowbothour__2__andfears.Thesurveysuggeststhat__3__—oneofthemostimportanthumanrelationships—willchangegreatly.PeoplewillmakefriendsthroughtheInternet.Computerswillbecomereally__4__by2050.Evennow,somepeopledescribethemastheirbestfriends!Others,__5__，saythatwewillbecomemuchmoreisolated(孤立的)fromeachother__6__wewillhavelittlerealhumancommunication.Educationwill__7__alottoo.Asmoreandmorechildrenwillbeusingcomputersinschools,certain__8__，suchasmentalarithmetic(心算),won’tbenecessary.Evenwritingbyhandwillhavebecomeathingofthe__9__.Accordingtothesurvey,homelifewillbe__10__.Mostpeoplebelievethatby2050robotswillbedoingthehouseworkandwewillbeeating__11__food.Alotofpeoplethinkthatwemightonlycookforfuninthefuture.Spaceexplorationwillbecomeincreasingly__12__.Fiftypercentofthepeoplewetalkedto__13__thatmanwillregularlyvisitMars.Pollutionissomethingthatseemsto__14__manypeople.Somefearthatitwill__15__togetworse,andthatourplanetwillbecome__16__toliveon.Otherseven__17__thatonedaywe’llhavetopayforcleanair.__18__，peopleseemtobequiteoptimisticaboutgeneticengineering(遗传工程学),astheythinkscientistswilluseitto__19__diseaseslikecancerandAIDS.Nomatterhowdarkorbrightitmayseem,itisuptousto__20__ourplanetandtrytomakeitabetterplace.n语篇解读：本文是一篇说明文。文章是人们对未来生活看法的问卷调查结果。1．A.education　　　　　　　B．spaceC．natureD．life解析：选D　根据下文描述的交友、教育、太空探索以及污染问题等可知，此问卷调查是关于未来“生活(life)”的。2．A.tearsB．hopesC．rightsD．plans解析：选B　根据本空后的fears以及下文描述的未来生活的不同方面可知，问卷结果显示了人们对未来生活的“期许(hopes)”和担忧。3．A.marriageB．leadershipC．friendshipD．neighborhood解析：选C　根据下文的“oneofthemostimportanthumanrelationships”和“PeoplewillmakefriendsthroughtheInternet.”可知，此处是说未来的“友谊(friendship)”会发生巨大的改变。4．A.privateB．perfectC．necessaryD．expensive解析：选C　根据本段描述电脑对人们的影响可知，到2050年，电脑将变得“必不可少(necessary)”。5．A.howeverB．insteadC．anyhowD．therefore解析：选A　“一些人认为电脑是最好的朋友”和“有些人认为人与人之间将变得更加孤立”之间是转折关系，故选however。6．A.untilB．unlessC．becauseD．although解析：选C　“缺少真实的人际交流”是“人们变得更加孤立”的原因，故选because。7．A.provideB．completeC．receiveD．change解析：选D　根据下文描述心算变得没有必要可知，未来的教育也会“改变(change)”很多。8．A.factsB．abilitiesC．goalsD．thoughts解析：选B　参见下题解析。9．A.endB．pastC．momentD．futuren解析：选B　由于电脑的普及，某些“技能(abilities)”，如心算，将没有必要。甚至用手写字也会变得过时。athingofthepast指“过时的事物”。10．A.busierB．saferC．easierD．sadder解析：选C　根据下文的“robotswillbedoingthehousework”可知，未来家庭生活将变得“更简单(easier)”。11．A.unhealthyB．frozenC．overcookedD．readymade解析：选D　根据下文的“wemightonlycookforfuninthefuture”可知，到2050年人们基本不做饭，而是吃“已经做好的(readymade)”饭。12．A.famousB．cheapC．popularD．difficult解析：选C　根据下文的“manwillregularlyvisitMars”可知，未来的太空探索将非常“流行(popular)”。13．A.doubtB．believeC．rememberD．warn解析：选B　根据上文的“Mostpeoplebelieve”可知，50%的受访者“相信(believe)”人类会定期拜访火星。14．A.confuseB．frightenC．satisfyD．worry解析：选D　根据下文的“Somefearthat...”可知，环境污染让很多人“担心(worry)”。15．A.stopB．continueC．refuseD．begin解析：选B　本段指污染带给人们的影响。有些人担心如果环境“继续(continue)”变糟糕，在地球上居住将变得“不可能(impossible)”。16．A.coldB．freeC．suitableD．impossible解析：选D　参见上题解析。17．A.expectB．promiseC．predictD．wish解析：选C　环境污染使得有些人“预测(predict)”有一天呼吸干净的空气也需要付费。18．A.AsaresultB．InotherwordsnC．InasimilarwayD．Ontheotherhand解析：选D　对未来生活，人们一方面担心环境污染，而“另一方面(Ontheotherhand)”则对遗传工程学充满期待。19．A.catchB．preventC．spreadD．carry解析：选B　根据上文的“bequiteoptimistic”可知，有一些人相信科学家可以利用遗传工程学“防治(prevent)”诸如癌症和艾滋这样的疾病。20．A.lookafterB．takeoverC．payforD．thinkabout解析：选A　根据上述调查结果以及作者的结论“trytomakeitabetterplace”可知，作者认为我们应该“照顾(lookafter)”好地球。Ⅱ.短文改错DearJack，I’mgladthatyou’llcometoChinaforfurtherstudy.Nowletmetellyouthatyou’reconcernedabout.Asweallknow,PekingUniversityisoneofthetopuniversityinChina,whichisfamousfortheirexcellentteaching.Studyinghere,you’resuretogetbeenimprovedineveryaspect.Thiswillbethefirsttimeyouhadlivedinaforeigncountryalone.However,youneedn’tworrythelifehere,becauseit’slocatinginthebusinesscenterofBeijing.Besides,mostpeopletherearefriendlytoforeigners.I’dliketohelpyoufindtheproperhostfamilyneartheuniversityifnecessarily.I’mlookingforwardtoourmeetinginBeijing.Yours，LiHua答案：第二句：that→what第三句：university→universities;their→its第四句：去掉been第五句：had→have第六句：worry后加about;locating→located第七句：there→here第八句：第一个the→a;necessarily→necessary