environment.Naturalcleaningprocessescancleantheparticlesofsmokefromtheair.However,thecollectivesmokefromthousandsoffactories,overthepasttwocenturies,hascausedenormousincreasesinairpollutionlevelsworldwide.Cleaningthissmokehasexceededtheprotectiveabilityofnaturalprocesses.Theforestscannotcleantheairfastenough.
所有自然体系都趋向于在各种对立因素或力量中保持平衡。而人类活动能够引起或加速自然体系中的永久性变化。一处小火带来的烟不会危害环境，因为自然净化作用会将空气中的烟尘清除。但是，在过去的两个世纪中，从千万家工厂排放出的烟尘已大大加剧了全球大气的污染程度。要清除这些烟尘已超出了自然作用的保护能力。森林已不能及时清洁空气。Inspiteofrapidpopulationincreaseandindustrialgrowth,somegroupsofpeople,ofteninremoteareas,havebeenabletoliveinharmonywiththeplanet.Thesepeoplehavenotchangedtheirwaysoflivingfromthewaysoftheirancestors.Callednativepeoples,theyretainthewaysoflifethathaveremainedunchangedformanygenerations.ManyoftheirculturalvaluesandwaysoflifeincludepracticesthatreturnresourcestotheEarth.
尽管人口迅速增长，工业快速发展，还是有一些人类群体──常常是居住在偏远地区的人们──能与地球和睦共处。这些人从未改变过他们祖先的生活方式。他们被称为土著，保留着历代不变的生活方式。他们的许多文化价值观念和生活方式都包含向地球归还资源的做法。
Humanpopulationgrowthiscreatingfoodshortages,problemsofairquality,andchangesinweatherpatterns.Whatisdestroyingrainforestsandruiningthelandandseas?Whatcausestheacidrainthatformsfromwaterpassingthroughpollutedair?Whyistherethethreatofglobalwarming?Alltheseharmfulresultscomefromthetoomuchuseofresourcesandthehumanstruggletocontroltheenvironment.
人口的增长带来了粮食短缺、空气质量降低、天气状况变化等问题。是什么在破坏雨林、土壤和海洋?是什么造成了雨水穿过污染的大气时形成的酸雨?为什么会有全球变暖的威胁?所有这些恶果都源于对资源的过度使用和人类对环境的强行控
计算机科学与技术(专升本)
制。大学英语3期末考试复习资料古月编辑整理
ThetwentiethcenturybeganwithpowerfulcountriescompetingtotakeadvantageoftheEarth.Asanoutcomeoftheirhungerforempires,theEarthwasabused.Nowpeopleallovertheworldarelivingwiththeproblemscausedbythisabuse.Nowthattheyarenolongerignorantofthecausesofthesicknessofourplanet,theyseekwaystohelptheEarth,togivebackwhattheytakeaway.Previously,mankindonlyusedtheEarth.NoweveryonemustprotectplanetEarth,aplanetindanger.
从20世纪初起，各强国竞相利用地球资源。他们渴望成为帝国的贪欲造成了地球资源被滥用。如今，全世界的人都在忍受这种滥用所带来的问题。由于不再无视地球罹难的根源，人们正在寻求各种方法来治疗它，把自己取走的东西归还给地球。从前人类只会利用地球，如今每个人都必须保护地球，保护这个身处险境的星球。
◆《全程导练》选择题部分
1.Tospeedupthe_______ofletters,thePostOfficeintroducedautomaticsorting.
A.treatmentB.deliveryC.transmissionD.departure
2.Operationswhichleftpatients________andinneedoflongperiodsofrecoverytimenowleavethemfeelingrelaxedandcomfortable.
A.exhausted
A.reserve
A.validB.abandonedB.restrainB.vainC.injuredD.deserted3.Youshouldtryto_______yourambitionandbemorerealistic.C.retainC.vacantD.replaceD.vague4.Theneighborhoodboysliketoplaybasketballonthat_______lot.
5.Manypersonalmanagerssayitisgettingharderandharderto________honestapplicantsfromthegrowingnumberofdishonestones.
A.dissolve
A.panic
hi-fisets.
parable
A.modulate
A.morethan
A.control
A.deceived
petitiveD.induceD.lessthan8.Shewatchedhim______asanexcellentjudgeoftalent.9.Innocountry_______Britain,ithasbeensaid,canoneexperiencefourseasonsinthecourseofasingleday.10.Hesaidhewasapolicemanandthereforehadthe______tostopspeedingdrivers.D.priorityD.cheatedD.accent
B.disguiseB.alarmC.discountD.distinguish6.Theywatchedwith________asthetightropewalkerstruggledtoremainhisbalance.C.horrorD.terror7.Theperformanceofthisreasonablypricedrecordplayeris______inqualitytothatofsomemoreexpensive11.Theboy_______hisfriendoutoftheapplebyinsistingthatitwasrotten,ifnotpoisonous.12.BythefactthathestayedintheUnitedStatesformorethantenyears,hedevelopedanAmerican_________.
13.Asoap________isapopulartelevisionseriesaboutthedailylivesandproblemsofagroupofpeople.
A.drama
A.feeling
A.fee
A.strikingB.playB.attributeB.savingB.infiniteC.operaD.programD.status14.Nowthatthedirectorhasagood______youcantalktohimaboutmoremoneyforyourproject.C.attitude15.Onceyouhadmadeyourbookingandpaida_________,thenthecostofyourholidaycannotbechanged.C.moneyD.loanD.typical16.Thereisa(n)________differencebetweenJaneandMaryincharacter:oneisreserved,theotheristalkative.C.bewildering
17.Althoughhehadlookedthroughallthereferencematerialonthesubject,hestillfoundithardtounderstandthispointandherexplanationonly_______tohisconfusion.
A.extended
A.efficiency
A.respected
A.faculty
A.swallow
A.gointo
A.partial
A.rejection
A.allowance
A.raised
andsecurity.
A.leadto
A.isassigned
A.soughtforB.resultfromC.lieinD.settledownC.beassignedC.turnedupD.hasbeenassignedD.resortedto28.Idon’tthinkitadvisablethatTom_______tothejobsincehehasnoexperience.B.willbeassignedB.accountedfor29.Iwouldneverhave_______acourtoflawifIhadn’tbeensodesperate.B.amountedB.efficientB.respectiveB.enduranceB.disposeB.gothroughB.beneficialB.restrictionB.accessB.arousedC.addedC.sufficiencyC.respectfulC.patienceC.consumeC.gobackonC.preferableC.retreatC.assumptionC.aroseD.roseD.turnedD.sufficientD.respectableD.strengthD.exhaustD.goalongwithD.liable_______.D.recessionD.account18.Thereisno______evidencetoshowthatheisguilty.19.Afterlunch,weallwentonwithour_______jobs.20.Along-distancerunnermusthave________.21.InBritainpeople_______fourmilliontonsofpotatoeseveryyear.22.Theearlypioneershadto_____manyhardshipstosettleonthenewland.23.Itissaidthatthemathteacherseems______towardsbrightstudents.24.Weshouldconcentrateonsharplyreducinginterestratestopulltheeconomyoutof25.Mostofourflightshaveabaggage_______styeartheadvertisingrate______by20percent.27.Generouspublicfundingofbasicsciencewould_______considerablebenefitsforthecountry’shealth,wealth