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Unit1课内练习答案（P3Comprehending1）1.FirstsettlerscrossedtheBeringStraitintheArctictoAmerica.ThesepeoplearenowknownasNativeAmericans.2.SpanishsoldiersarrivedinSouthAmerica.3.CaliforniabecamepartofMexico.4.TheUSdeclaredwaronMexico.5.GoldwasdiscoveredinCalifornia.6.Californiabecamethe31ststateoftheUS.P3Ex.2第一行：intheearly16thcenturyearly1800s1800s第二行：late1840s/early1850sinthelate19thcentury1911第三行：1920sbeginningofthe20thcenturyfromaboutthe1970s第四行：fromaboutthe1970sinmorerecentdecadesfromaboutthe1970sP4Ex.1（learningaboutlanguage）AdjectivemajorItalianhardKoreanracialPakistanidistinctDanishNounmajorityItalyhardshipKorearacePakistandistinctionDenmarkP4Ex.21federal2Catholic3majority4Ministry5boom6Italy7distinction8hardships9Korea10electedP4Ex.3Arctic,Strait,crossing,bymeansof,rail,makingalife,aircraftP5Ex.3；P6Ex.2P5Ex.31---62---43---54---35----76---27---88---1P6Ex.21.HestartedinnorthernCalifornia,andhehasbeentravellingsouth.2.Thefactsthatnoteverybodyisrich,noteverybodylivesonthecoast,andthedesertinCaliforniaisnotliketherestoftheclimateofCalifornia,surprisedhim.3.HehadwatchedtoomanyAmericanmovies.4.ManypeoplefromdifferentcountriesmovedtoCalifornia.Theybroughttheirowncustoms,cultureandfood.Theykeptthemupandsoproducedthelargevarietyoffood,music,customs,artandculturalactivities.P6Ex.3southeasternCaliforniaAmericanmoviesbeach/coastcotton,vegetables,nutssoutheastdesertracesfestival,musicP7Ex.11Wednesday(AngelIsland)2Monday(Fisherman’sWharf)3Tuesday(Chinatown)4Tuesday(blueandwhiteroadsighs)5Wednesday(GoldenGateBridge)6Monday(cablecar)P9Ex.21Heinventedthecablecarsystembecausethehorse-drawntramsusedbeforewereunsafe.2HeateatFisherman’sWharf.3Itwasconvenientforhimtotouraroundthecity.Itwascheapertohireacarwithotherpeoplebecausetheycouldsharethecoast.Alsoheprobablyenjoyedbeinginthecompanyofothertourists.4EatinChineserestaurants,gotomarkets,visittemplesandmuseums.5ItwasfamousasaplaceforimmigrantstobecheckedbeforetheycouldenterCalifornia.Workbook练习题答案（P46Ex.1）1Traveller’sTales2TomPrice3MandyLong4NewOrleansP46Ex.31F2T3T4F5T6T7F8T9TP47Ex.41.(略)2.hotandhumid3.1812LouisianabecameastateoftheUSA.1857ThefirstMardiGrascelebrationwasheld.4.CP48Ex.1agreatmany,applyingfor,nephew,ferry,Immigration,Apparently,bakeries,occur,thankful,fascinatingP48Ex.21takein2reform3hadmarkedout4teamupwith5backtoback6applicants,7customsP48Ex.31.Whenhearrivedatthehotel,thefirstthinghewantedtodowastoleavehisluggage/baggage,haveashowerandshave,andthenwalkaround.2.Mygrandpawasasocialistwhobelievedinsocialismallhislife.3.ManyillegalimmigrantsfeltthattheirstayinAmericawaslikeapunishmentbecauseonlyafewofthemgotjusticeandwereallowedtolivethere.4.Thecivilauthoritiestriedtoreducethenoisemadebyseagullsbutfailed.5.ManyEnglishfarmersmournedtheircattlewhichhadtobekilledbecauseof“madcowdisease”.6.Myhouseisnowherenearthecenterofthecity,butithasnoairpollutionortrafficjams./Althoughmyhouseisnowherenearthecenterofthecity,ithasnoairpollutionortrafficjams.P49Ex.11how(OC)2What(SC)3whether(OC)4what/which(OC)5what(SC)6That(SC)7Why(SC)8why(OC)9When(SC)10asif(PC)11where(/why(PC)12How(SC)13why(PC)14that(PC)15whether(OC)P49Ex.21.itisusedasthesubject,object,predicativeorappositiveinasentence2.itisusedasanattributemodifyinganoun,apronounorasentenceP50Ex.31.sad2.thecoffinwastakentothegraveyardtobeburied.3.serious4.afterthebodyhasbeenburiedandthepeopleareleavingthegraveyard5.beginssinginganddancing6.celebratethelifeofthepersonwhohasjustdiedP52Ex.2P52Ex.3Achievements:Learnedtoplaydrumsandtrumpetatage12;Gotajobinbestbandintownatage16;Startedmakingrecordsatage23;Becameahugestarandremainedpopularforalmost50years;Actedinover50movies;BecameagoodwillambassadorfortheUSA;Tookpartinthecivilrightsmovement.Goodqualities：Eventhoughhewaspoor,heneverturnedtocrimetomakealiving;Hewasagreatmusician;Helovedentertainingpeople;Hecouldcommunicatewithpeoplefromallsortsofbackgrounds;Hecaredaboutcivilrightsissues;Helivedasimplelifedespitehisrightsandfame;Hecontinuedtoworkallhislife.Unit2课内练习答案（P12Ex.1）1.Thefirstuseistoproducecommercialquantitiesofplants.Thesecondistoresearchonnewplantsspecialsanddomedicalresearchonanimals.2.Cloningplantsisstraightforward,butthecloningofanimalsisverycomplicated.3.ThefirstclonefromanadultanimalwasDollythesheep.Shediedin2003.4.Cloningiscontroversialinsomecountriesformoralandreligiousreasons.P12Ex.2ProblemsordangersofcloningEvilleadersmaywanttoclonethemselves.Animalclonesmaydeveloptheillnessesofolderanimals.Animalclonesmaydieyoungerthanthedonoranimals.Therearemoralobjectionstocloninghumanbeing.AdvantagesofcloningMedicalcloningcouldproducecuresforseriousillnessinhumans.Cloningplantscanbeusefulforresearchonnewplantspecies.Cloningplantscanproduceplantsofsimilarqualityforsale.Cloningcanhelpsaveendangeredanimals.P12EX.3Ithinkthewriterisimpartialbecausehe/shedoesnotstateanypersonalopinionaboutcloning.P13Ex.11differ2cast3accumulate4exact5altogether6objections7undertake8moral.P13Ex.21straightforward2arbitrary3commercial4madeanobjectionto5obtain6willforbidP13Ex.31attain2complicated3fate4carrier5cast6r