必修2-Unit-3知識點(diǎn)詳解

必修2Unit3Computers要點(diǎn)梳理 高效梳理·知識備考●重點(diǎn)單詞1．calculatevt.計(jì)算→calculatorn．計(jì)算器2．universaladj.普遍的；通用的；宇宙的→universen．宇宙→universallyadv.普遍地3．simplifyvt.簡化→simpleadj.簡單的4．technologyn．工藝；科技；技術(shù)→technologicaladj.科技的5．revolutionn．革命→revolutionaryadj.革命的6．intelligencen．智力；聰明；智能→intelligentadj.有才智的；聰明的7．solvevt.解決；解答→solutionn．解答8．realityn．真實(shí)；事實(shí)；現(xiàn)實(shí)→realadj.真實(shí)的，真正的9．personaladj.私人的；個(gè)人的；親自的→personallyadv.親自地10．financen．金融；財(cái)經(jīng)→financialadj.金融的，財(cái)政的11．explorevt.&vi.探索；探測；探究12．a(chǎn)nyhowadv.無論如何；即使如此13．goaln．目標(biāo)；目的；球門；(進(jìn)球)得分14．signalvi.&vt.發(fā)信號n．信號15．typen．類型vt.&vi.打字16．a(chǎn)risevi.出現(xiàn)；發(fā)生17．electronicadj.電子的●重點(diǎn)短語1．have...incommon共有；共用2．from...on從……時(shí)起3．comeintoreality成為現(xiàn)實(shí)4．a(chǎn)saresult結(jié)果5．inaway在某種程度上6．withthehelpof在……的幫助下7．dealwith處理8．watchover看守；監(jiān)視9．giveaway贈送10．becrazyabout對……著迷11．makeup彌補(bǔ)；整理12．a(chǎn)fterall畢竟●重點(diǎn)句型1．AndmymemorybecamesolargethatevenIcouldn'tbelieveit！我的存儲量變得如此巨大，甚至連我自己都不能相信！2．Anyhow,mygoalistoprovidehumanswithalifeofhighquality.無論如何，我的目標(biāo)是為人類提供高質(zhì)量的生活?？键c(diǎn)探究 互動探究·能力備考Ⅰ.詞匯短語過關(guān)1．totaladj.總的；全部的；整個(gè)的n．總數(shù)；合計(jì)v．總數(shù)為；合計(jì)為totallyadv.完全地；整個(gè)地intotal總共；總計(jì)(＝totally)atotalof總數(shù)；總共(修飾名詞復(fù)數(shù)時(shí)，謂語動詞用復(fù)數(shù))thetotalof...(謂語動詞用單數(shù))totalup＝addup算出總數(shù)total(up)to＝addupto總額為—Whatis________________________thesebooks？這些書的全部費(fèi)用是多少？—Itcostme__________________of500yuan.___________，itcostme500yuan.Thecost________________500yuan.這些書總共花了我500元。thetotalcostofatotalofIntotaltotalledupto2．a(chǎn)nyhow/anywayadv.(1)“無論如何，不管怎樣；總之；盡管如此”。在作此意講時(shí)，anyway和anyhow一樣，都用做讓步狀語，一般置于句中(其前常有連詞but)或句末。(2)“況且，更何況，再說，至少”。作此意講時(shí)，兩者都可用來做狀語，對前面的話做補(bǔ)充，給出一個(gè)令人信服的理由，此時(shí)anyhow常出現(xiàn)在句首或最后的分句之首，而不出現(xiàn)在句末。(3)“粗心地，隨意地”，作此意講時(shí)，只能用anyhow。寫出以下句中anyhow的意思。(1)Itmayrain,butweshallgoanyhow.______________(2)Anyhow,youcantry,evenifthere'snotmuchchanceofsuccess.___________________________(3)Theworkwasdoneallanyhow._________________無論如何至少粗心地拓展：somehowadv.由于某種未知的原因；不知怎么的；以某種方式；用某種方法；從某種角度。如：Somehowhewasafraidofher.不知怎的，他怕她。3．signalvi.&vt.發(fā)信號n．信號adanger/warning/distresssignal危險(xiǎn)/警告/遇難信號trafficsignals交通信號燈astopsignal停車信號signal(to)sb.todosth.示意某人做某事signaltosb.向某人示意signal(sb.)that...示意……(1)AllIgetis__________________wheneverIdialhisnumber.我什么時(shí)候撥他的聽到的都是忙音。(2)He__________________forthebill.他示意效勞員結(jié)帳。(3)She__________________followher.她示意他跟她走。abusysignalsignalledthewaitersignalledhimto4．typen．類型，種類，樣式v．打字ararebloodtype罕見的血型differentracialtypes不同的人種typeup打印出來(1)Shemixeswith____________________people.她和各種類型的人打交道。(2)Howfastcanyou________________？你打字有多快？(3)Thisletterneeds__________________again.這封信需要再打一遍。alltypesoftypetobetyped5．a(chǎn)risevi.(arose,arisen)出現(xiàn)；發(fā)生；起身，起立(1)“出現(xiàn)，開始，呈現(xiàn)”，多用抽象名詞做主語。(2)表示“起因于，由……產(chǎn)生”，通常用做arisefrom/putof。(3)表“起身”之意，為正式或舊式用法。(1)Ithoughtitwouldbeeasy,butalotofproblemshave________________.我本來想事情會很容易，但是出現(xiàn)了許多問題。(2)Accidents_____________________carelessness.事故由粗心大意引起。(3)Aheavymist______________thelake.湖面起了濃霧。(4)He_______________hisseat.他從座位上站起來。arisenarisefromarosefromarosefrom6．a(chǎn)saresult結(jié)果；因此asaresultof由于；作為……的結(jié)果resultin(＝cause)導(dǎo)致；致使resultfrom(＝becausedby)起因于；因……而引起(1)Hardwork____________success.努力終歸成功。(2)Success_____________hardwork.成功來自于努力工作。(3)Hewasill.____________________，hedidn'tgotoschool.他生病了。因此，他沒去上學(xué)。(4)___________________________hisillness,hedidn'tgotoschool.由于生病，他沒去上學(xué)。resultsinresultsfromAsaresultAsaresultof7．inaway在某種程度上alltheway一路上；一直；完全bywayof經(jīng)由；途經(jīng)bytheway順便說intheway阻礙，擋路inthisway以這種方法innoway決不，無論如何都不ontheway在途中onone’swayto...在某人去……的途中；即將成為……giveway(to)讓步，屈服(1)Youarequiteright__________________.從某一方面來講，你完全正確。(2)It’ssurprisingthatsomanypeopleshouldgoabroad_________________HongKong.竟然有這么多的人途經(jīng)香港去國外，真讓人吃驚。(3)__________________canwemissthechancethatsomeonewillbesentabroadforfurthereducation.我們決不能錯(cuò)過這個(gè)被派往國外深造的時(shí)機(jī)。inawaybywayofInnoway(4)Ouremployerwillnot______________________ourdemandsforhigherwages.我們的雇主不會對我們增加工資的要求讓步。(5)Don’tstand____________.不要阻礙別人。givewaytointheway8．dealwith處理；安排；對付寫出以下dealwith的意思。(1)Therearetoomanydifficultiesforustodealwith.____________(2)Hehaslearnttodealproperlywithallkindsofcomplicatedsituations._______________(3)Dealwithamanashedealswithyou.___________(4)ThisisabookdealingwithAsianproblems.______________________處理應(yīng)付對付關(guān)于；論及與……往來/相處(5)Theyhavelearnedtodealwithvariouspersons.__________比擬：dealwith,dowith(1)dealwith意思是“處理，談?wù)?，對付”以及“與……做買賣”，表示處理時(shí)，常與連接副詞how連用。Idon’tknowhowtodealwithhim.我不知道如何對付他。(2)dowith意思是“對待，處理，利用，與……有關(guān)”，表示“對待”時(shí)賓語是人，相當(dāng)于treat；表示“處理，利用”時(shí)，常與連接代詞what連用。Idon’tknowhowtheydealwiththeproblem.＝Idon’tknowwhattheydowiththeproblem.我不知道他們?nèi)绾翁幚磉@個(gè)問題。9．watchover看守；監(jiān)視watchforsth.盼望或等待某事物watchout小心；留神；注意(用于提醒、警示)watchoutforsb./sth.警惕或注意某人/物keep(a)watchon監(jiān)視onthewatchfor看守著……，監(jiān)視著……(1)They__________________bythreepolicemen.他們由三個(gè)警觀察守著。(2)She____________herchancetospeak.她等時(shí)機(jī)發(fā)言。(3)____________！Thereisacarcoming.注意！有車來了。(4)_________________thepickpockets！留神有扒手！werewatchedoverwatchedforWatchoutWatchoutforⅡ.重點(diǎn)句型詳解1．AndmymemorybecamesolargethatevenIcouldn'tbelieveit!我的存儲量變得如此巨大，甚至連我自己都不能相信！so...that...如此……以致……。that引導(dǎo)結(jié)果狀語從句。另外，such...that...也引導(dǎo)結(jié)果狀語從句。其結(jié)構(gòu)形式為：so＋adj./adv.＋adj.＋a/an＋可數(shù)名詞單數(shù)＋many/few＋可數(shù)名詞復(fù)數(shù)much/little＋不可數(shù)名詞that從句such＋a/an＋adj.＋可數(shù)名詞單數(shù)＋adj.＋可數(shù)名詞復(fù)數(shù)＋adj.＋不可數(shù)名詞that從句①Shewassoexcitedthatshecouldn'tgotosleep.她興奮得睡不著覺。②Itwassohotadaythatnobodywantedtodoanything.(＝Itwassuchahotdaythatnobodywantedtodoanything.)天氣如此熱，誰也不想干活。③Imadesomanymistakesinthecompositionthattheteachercriticizedme.我的作文中出了許多錯(cuò)誤，老師批評了我。拓展：(1)當(dāng)so.../such...位于句首時(shí)，句子要局部倒裝。SosmallwasthemarkthatIcouldhardlyseeit.那個(gè)標(biāo)記非常小，我?guī)缀蹩床灰娝?2)so...that...中的主句和從句的主語是同一個(gè)，that從句也可改為astodo形式。Theoldladywassokindthatsheledmetothehospital.＝Theoldladywassokindastoleadmetothehospital.這個(gè)老太太是那樣好心，她把我領(lǐng)到了醫(yī)院。(3)sothat連在一起用，可引導(dǎo)結(jié)果狀語從句，也可引導(dǎo)目的狀語從句。sothat引導(dǎo)目的狀語從句時(shí)，從句中常使用can/could/may/might/will/would/should等情態(tài)動詞；引導(dǎo)結(jié)果狀語從句時(shí)，從句中一般不用can和may等詞，在sothat前可以有逗號，意思是“因此；所以”。Hehurriedupsothathecouldcatchthetrain.他匆匆趕路為的是趕上火車。(比照：Hehurriedupsothathecaughtthetrain.他匆匆趕路，結(jié)果趕上了火車。)(1)______aboutwildplantsthattheydecidedtomakeatriptoMadagascarforfurtherresearch.A．SocuriousthecouplewasB．SocuriouswerethecoupleC．HowcuriousthecouplewereD．Thecouplewassuchcurious解析：考查so...that...引導(dǎo)結(jié)果狀語從句，且so...放于句首時(shí)，句子局部倒裝。答案：B(2)Mostchildrenneedencouragementintimeoffailure______theycancheerupagain.A．sothatB．incaseC．because D．if解析：考查sothat引導(dǎo)目的狀語從句。答案：A2．Anyhow,mygoalistoprovidehumanswithalifeofhighquality.無論如何，我的目標(biāo)是為人類提供高質(zhì)量的生活。ofhighquality在句中做定語，屬于of＋n.結(jié)構(gòu)。這一結(jié)構(gòu)相當(dāng)于形容詞，在句中可以做表語、定語或賓語補(bǔ)足語。(1)of＋n.結(jié)構(gòu)中的名詞是抽象名詞時(shí)，相當(dāng)于其名詞所對應(yīng)的形容詞的意思，說明被修飾詞具有某種特征或?qū)傩浴３Ｓ玫拿~有：use,importance,help,value,interest,benefit等。這些名詞前可用great,no,little,some,any,notmuch等修飾，以表示不同程度。ThecamelisofgreathelptotheArab.(＝ThecamelisveryhelpfultotheArab.)駱駝對阿拉伯人有很大幫助。(2)of＋n.結(jié)構(gòu)中的名詞表種類、數(shù)量、度量等時(shí)，表示不同的人或物的共同特征，此時(shí)名詞前通常有冠詞。常用的名詞有：size,type,kind,price,height,depth,length,weight,age,shape,colour等。Thetwoareofanage,butareofdifferentheight.這兩個(gè)人年齡相同，但身高不同。(3)of＋n.結(jié)構(gòu)還可以表示主語的根源關(guān)系，此時(shí)的名詞多是表示親屬、血統(tǒng)、種族、國籍以及出處的名詞，常用的名詞有：family,blood,race,origin等。Weareofthesameblood.我們是同一血統(tǒng)。(4)of＋n.結(jié)構(gòu)還可以表示人的特點(diǎn)、特性，常用of＋wealth/education/courage/achievement/ability等。Yoursisterisagirlofwisdom.你妹妹是一位有智慧的女孩。Youwillfindthismapofgreat______inhelpingyoutogetaroundLondon.A．price B．costC．value D．usefulness解析：beofgreatvalue＝beveryvaluable“很有價(jià)值”。答案：C易錯(cuò)點(diǎn)撥 自我完善·誤區(qū)備考1.symbol/sign/signal/mark均含“標(biāo)志，象征，符號”之意。(1)symbol指作象征或表達(dá)某種深邃意蘊(yùn)的特殊事物。(2)sign普通用詞，指人們公認(rèn)的事物的記號，也可指某種情況的征兆。(3)signal指為某一目的而有意發(fā)出的信號。(4)mark普通用詞，含義廣泛。既可指為便于識別而有意做的標(biāo)記，又可指自然形成的標(biāo)記或有別于其他事物的特征。(1)Redcrossisa______forhospital.(2)Aredlightisusuallya_________ofdanger.(3)Makea______whereyoudon’tunderstand.(4)Aredarkcloudsa______ofrain?(5)Adove(鴿子)isa______________forpeace.ignsignalmarksignsymble2.arise/arouse/rise/raise(1)arise是不及物動詞，在現(xiàn)代英語中主要用于借喻，指“出現(xiàn)，發(fā)生，產(chǎn)生”。(2)arouse是及物動詞，指“喚醒，激起”，后常跟抽象名詞。(3)rise是不及物動詞，使用范圍較廣，指“升起，上升，增長”，也可指“起立，起床，地位升高”等。(4)raise是及物動詞，用在句中，后面需跟賓語。一般指“升起，舉起，增加(程度、價(jià)格等)；提高(音量)；提出；種植(農(nóng)作物)；養(yǎng)育；撫育(子女)”。(1)Theriveris______aftertherain.(2)He______hishandinthehopeofbeingasked.(3)Hisstrangebehaviour_________oursuspicions.(4)Newproblems______everyday.risingraisedarousedarise提示：原形過去式過去分詞v.ingarise(vi.)arosearisenarisingarouse(vt.)arousedarousedarousingrise(vi.)roserisenrisingraise(vt.)raisedraisedraising高效作業(yè) 自我測評·技能備考Ⅰ.單詞拼寫1．Don'tloseheart._________________(無論如何),youcantry.2．I'msorrytosaythatI______(徹底地)forgotaboutit.3．Inmostmathsexaminationsseniorhighschoolstudentsareallowedtouse____________(計(jì)算器)intheexams.4．Creditcardshavebroughtabouta______________(革命)inpeople'sspendinghabits.5．Unfortunately,anewdifficultyhas______(出現(xiàn)了)．Anyhow/Anywaytotallycalculatorsrevolutionarisen6．Withthedevelopmentoft______________，moreandmorepracticalmachineshavebeeninvented.7．P___________speaking,I'mnotinfavouroftheplan.8．He'sverycleverandofhighi_______________.9．Atfirst,Ithoughttheseflowerswerereal,buttheyarea_____________.10．Whicht_________ofteadoyouprefer?technologyPersonallyintelligenceartificialtypeⅡ.單項(xiàng)選擇1．Whiletherearequiteafewdifferencesintheeducationsystemsinmanycountries,educationis______.A．usual B．regularC．normal D．universal答案：D解析：句意：許多國家的教育體制有許多不同之處，然而教育卻是普及的。A.通常的；B.定期的，有規(guī)律的，C.正常的，D.普及的，普遍的。2．Ourschoolisverylarge.______，thenumberofthestudents______3500.A．Together;is B．Altogether;areC．Inall;are D．Intotal;is答案：D解析：intotal＝inall＝altogether是“總共，總計(jì)”的意思。thenumberof＋n.做主語時(shí)，謂語動詞用單數(shù)。3．IamnotsurewhetherIwillhaveanythingelsetodotomorrow.______，Iwilltryeverypossiblemeanstocometotheparty.A．Eventhough B．AnyhowC．Ifso D．Instead答案：B解析：句意為“我不敢肯定明天我是否有其他的事，但無論如何，我將盡可能來參加這個(gè)聚會”。4．—Ithinkheistakinganactivepartinsocialwork.—Iagreewithyou______.A．inaway B．onthewayC．bytheway D．intheway答案：A解析：考查介詞短語。inaway“從某種意義上”，合題意。5．Youmaynotagree,but______Ithinksheisaverygoodgirl.A．generally B．trulyC．personally D．commonly答案：C解析：考查副詞。表示“依個(gè)人而言”用personally。6．—Whatabeautifulday!—Yes,it's______thatI'dliketotakeawalk.A．suchniceweather B．soaniceweatherC．suchaniceweather D．soniceweather答案：A解析：weather是不可數(shù)名詞，故用such＋adj.＋weather。7．Shouldthechance______，I'dlovetogoabroad.A．rise B．raiseC．a(chǎn)rise D．a(chǎn)rouse答案：C解析：主語為抽象名詞thechance，應(yīng)選arise。8．—Whatanoise!Icanhardlystandit.—It______asiftheyarehavingapartynextdoor.A．looks B．soundsC．feels D．happens答案：B解析：考查Itsoundsasif...“聽起來像……”。9．Theterriblewarlastedeightyears.______，wiveslosttheirhusbands,parentslosttheirsons,andchildrenlosttheirfathers.A．Asaresult B．AsaresultofC．Instead D．However答案：A解析：句子強(qiáng)調(diào)因果關(guān)系，排除C、D項(xiàng)。B項(xiàng)應(yīng)加上賓語，即asaresultofthewar。10．LastsummerItookacourseon______poisonousgases.A．howtodealwith B．whattodealwithC．howtobedealtwith D．whattobedealtwith答案：A解析：考查dealwith的用法。11．Hemindssomuchabouthispositionintheofficethathe______anychancetobepromoted.A．watchesout B．looksupC．pointsout D．watchesfor答案：D解析：考查短語辨析。“盼望、等待提升的時(shí)機(jī)”用watchfor。watchout小心；lookup查找；pointout指出。12．______thehelpoftheteacher,thestudentwhowasn’tgoodatmath______thedifficultproblemquickly.A．Under;workedout B．With;workedonC．Under;solved D．With;solved答案：D解析：solve解決。另外“在某人的幫助下”用withthehelpofsb.來表達(dá)。13．InSeptember2008,China’skeymilestoneinspacetravel______whenZhaiZhigangconductedthefirstspacewalk.A．reached B．wasreachedC．hasreached D．hadbeenreached答案：B解析：由句中時(shí)間狀語InSeptember2008可知應(yīng)用過去時(shí)態(tài)。另外，主語China’skeymilestone與動詞reach之間為被動關(guān)系，應(yīng)用被動語態(tài)。主從句動作不存在先后關(guān)系，故D項(xiàng)不對。14．______abouttheeconomiccrisisthathedecidedtolookformoreinformationaboutit.A．Socurioushewas B．SocuriouswasheC．SuchcurioushewasD．Suchcuriouswashe答案：B解析：so＋adj./adv.做表語放在句首時(shí)，主謂倒裝。15．－Let’sgoswimming,shallwe?－______.A．It’smypleasure B．Itdoesn’tmatterC．Yes,let’sgo D．Iagreewithyou答案：C解析：考查建議及應(yīng)答。由于第一句是問句，需要答復(fù)，所以D項(xiàng)不正確。Ⅲ.閱讀理解AGrandpaNybakkenlovedlife—especiallywhenhecouldplayatrickonsomebody.Atthosetimes,hislargeNorwegianframeshookwithlaughterwhilehepretendedinnocentsurprise,exclaiming,“Oh,forevermore！”ButonacoldSaturdayindowntownChicago,GrandpafeltthatGodplayedatrickonhim,andGrandpawasn'tlaughing.Grandpaworkedasacarpenter.Onthisparticularday,hewasbuildingsomeboxesfortheclotheshischurchwassendingtoanorphanageabroad.Onhiswayhome,hereachedintohisshirtpockettofindhisglasses,buttheyweregone.Herememberedputtingthemtherethatmorning,sohedrovebacktothechurch.Hissearchprovedfruitless.Suddenly,herealizedwhathappened.Theglasseshadslippedoutofhispocketunnoticedandfallenintooneoftheboxes,whichhehadnailedshut.HisbrandnewglasseswereheadingforChina!TheGreatDepressionwasatitsheight,andGrandpahadsixchildren.Hehadspenttwentydollarsforthoseglassesthatverymorning.“It'snotfair，”hetoldGodashedrovehomeinfrustration.“I'vebeenveryfaithfulingivingofmytimeandmoneytoyourwork,andnowthis.”Severalmonthslater,thedirectoroftheorphanagewasonvacationintheUnitedStates.Hewantedtovisitallthechurchesthatsupportedhim,sohecametospeakonSundaynightatmygrandfather'ssmallchurchinChicago.Grandpaandhisfamilysatintheirusualseatsamongthesmallcongregation(教堂會眾)．“Butmostofall，”hesaid,“Imustthankyoufortheglassesyousentlastyear.”“EvenifIhadthemoney,therewassimplynowayofreplacingthoseglasses.Alongwithnotbeingabletoseewell,Iexperiencedheadacheseveryday,somycoworkersandIweremuchinprayeraboutthis.Thenyourboxesarrived.Whenmystaffremovedthecovers,theyfoundapairofglasseslyingonthetop.”Afteralongpause,hecontinued,“Folks,whenItriedontheglasses,itwasasthoughtheyhadbeencustom—madejustforme!Iwanttothankyouforbeingapartofthat！”Thepeoplelistened,happyfortheamazingglasses.Butthedirectorsurelymusthaveconfusedtheirchurchwithanother;theythought,therewerenoglassesontheirlistofitemstobesentoverseas.Butsittingquietlyintheback,withtearsstreamingdownhisface,anordinarycarpenterrealizedtheMasterCarpenterhadusedhiminanextraordinaryway.1.WhichofthefollowingisNOTtrueaboutGrandpaNybakkenaccordingtothepassage?A.Hewasanoutgoingmanandheldanactiveattitudetowardslife.B.Hehadalargefamilytosupport.C.Hewasacarpenterworkinginthechurch.D.HewasaloyalChristian.答案及解析：1.C。A選項(xiàng)根據(jù)第一段可以判斷，B選項(xiàng)根據(jù)Grandpahadsixchildren可以判斷，D選項(xiàng)根據(jù)I'vebeenveryfaithfulingivingofmytimeandmoneytoyourwork可以判斷。文章第二段只是說明祖父是個(gè)木匠，那天只是在教堂幫幫助，并沒有說他在那工作。2.Grandpaspentmuchofhistimeandmoneyinchurchmainlyto______.A.helpthepriestdosomereligiousworkB.helpthosepeopleinneedC.makesomewoodworkforthechurchD.seeksomehelpfromGod答案及解析：2.B。根據(jù)文章可以知道祖父信仰上帝，而上帝的工作就是福澤人們，所以他會去幫助別人。A在文章中沒有提及，C、D不是祖父的目的。3.ThepeopleinthechurchbutGrandpafeltconfusedatwhatthedirectorsaidbecause______.A.Grandpadidn'ttellthedirectorthathewastheowneroftheglassesB.thedirectorwantedtoreturntheglasseseventhoughhelikeditC.thedirectorcouldnotgetsuchglassesintheirowncountryD.theglasseswerenotincludedinthedonationlist答案及解析：3.D。根據(jù)therewerenoglassesontheirlistofitemstobesentoverseas”可以判斷。4.Whodoes“theMasterCarpenter”inthelastparagraphprobablyreferto?A.Grandpa'smaster. B.OneofGrandpa'sfriends.C.God.D.Grandpa'scoworker.答案及解析：4.C。答案與文章第一段中的GrandpafeltthatGodplayedatrickonhim相照應(yīng)，最后一段中的anordinarycarpenter指的就是祖父，theMasterCarpenter指的是God，耶穌也曾是木匠。5.Whichcanbethebesttitleofthepassage?A.Grandfather'sLife B.TheHelpfulDonationC.ThePerfectMistakeD.AnImpressiveSpeech答案及解析：5.C。根據(jù)文章的描述，祖父因?yàn)椴恍⌒陌蜒坨R掉進(jìn)了運(yùn)送募捐物品的箱子中，然而這副眼鏡卻給了受捐贈者極大的幫助。所以這是一次“美麗的失誤”。BThelargestearthquake(magnitude里氏9.5)ofthe20thcenturyhappenedonMay22,1960offthecoastofSouthCentralChile.Itgenerated(生成)oneofthemostdestructivePacificwidetsunamis(海嘯).Nearthegeneratingarea,boththeearthquakeandthetsunamiwereverymuchdestructive,particularlyinthecoastalareafromConcepciontothesouthendofIslaChiloe.ThelargesttsunamidamageoccurredatIslaChiloe－thecoastalareaclosesttotheepicenter(震中).Hugetsunamiwavesmeasuringashighas25metersarrivedwithin10to15minutesaftertheearthquake,killingatleasttwohundredpeople,sinkingalltheboats,andfloodinghalfakilometerinland.TherewaslargedamageandlossoflifeatConcepcion,Chile'stopindustrialcity.NearthecityofValdivia,theearthquakeandfollowingaftershocksgeneratedlandslideswhichkilled18people.AttheportcityofValparaiso,acityof200000,manybuildingscollapsed.Atotalof