Passage 4
Questions 16 to 20 are based on the following passage:
The new global satellite communications systems will offer three kinds service, which may overlap in many different kinds of receivers.
VOICE. Satellite telephones will be able to make calls from anywhere on the Earth to anywhere else. That could make them especially useful to remote, third world villages (some of which already use stationary satellite telephones), explorers and disaster-relief teams. Today’s mobile telephones depend on earth-bound transmitters, where technical standards vary from country to country. So business travelers cannot use their mobile phones on international trips. Satellite telephones would make that possible.
MESSAGING. Satellite massagers have the same global coverage as satellite telephones, but carry text alone, which could be useful for those with laptop computers. Equipped with a small screen like today’s papers, satellite massagers will also receive short messages.
TRACKING. Voice and messaging systems will also tell their users where they are to within a few hundred meters. Combined with the messaging service, the location service could help rescue teams to find stranded adventurers, the police to find stolen cars, exporters to follow the progress of cargoes, and haulage companies to check that drivers are not detouring the pub. America’s military Global Positioning System (GPS) satellite will provide better positioning information to anyone who has a receiver for their signals, but GPS does not carry messages, so such a receiver cannot be used on its own for tracking or rescue. By the mid-1990s, GPS receivers will be able to tell people where they are to within 70 meters anywhere in the world, and to within a meter or so in areas where the service is supplemented by ground-based transmitter.
16. Global satellite communications systems will be useful to .
A. laptop computer users
B. remote villages
C. disaster-relief teams
D. all above
17. Satellite telephone will make .
A. business travelers use mobile phones on international trips
B. possible calls from anywhere on earth to anywhere else
C. explorers happy
D. all above
18. Which of the following is true?
A. The positioning precision of the voice system is better than that of GPS.
B. The positioning precision of GPS is Better than that of the voice system.
C. The positioning precision of the messaging system is better than of GPS.
D. The positioning precision of voice system is better than that of the messaging system.
19. What can we say about the new global satellite communications systems?
A. They are widely used.
B. They are very helpful.
C. They are costly.
D. Both A and B.
20. Which of the following may be the best title for the passage?
A. Global Satellite Communications
B. New Voice and Messaging System
C. New Generation Satellite
D. Always in Touch
CDCDB
暂无解析
PartIVTranslation
Asthesourceofaluminumisalmostinexhaustible,wecanexpectthatmoreandmoreuseswillbefoundforthisversatilemetal.(PassageTwo)
Wecanbeginourdiscussionof“populationasglobalissue”withwhatmostpersonsmeanwhentheydiscuss“thepopulationproblem”:toomanypeopleonearthandatoorapidincreaseinthenumberaddedeachyear.Thefactsarenotindispute,Itwasquiterighttoemploytheanalogythatlikeneddemographicgrowthto“along,thinpowderfusethatburnssteadilyandhaltinglyuntilitfinallyreachesthechargeandexplodes.”
Tounderstandthecurrentsituation,whichischaracterizedbyrapidincreasesinpopulation,itisnecessarytounderstandthehistoryofpopulationtrends.Rapidgrowthisacomparativelyrecentphenomenon.Lookingbackatthe8,000yearsofdemographichistory,wefindthatpopulationshavebeenvirtuallystableorgrowingveryslightlyformostofhumanhistory.Formostofourancestors,lifewashard,oftennasty,andveryshort.Therewashighfertilityinmostplaces,butthiswasusuallybalancedbyhighmortality.Formostofhumanhistory,itwasseldomthecasethatoneintenpersonswouldlivepastforty,whileinfancyandchildhoodwereespeciallyriskyperiods.Often,societieswereincleardangerofextinctionbecausedeathratescouldexceedtheirbirthrates.Thus,thepopulationproblemthroughoutmostofhistorywashowtopreventextinctionofthehumanrace.
Thispatternisimportanttonotice.Notonlydoesitputthecurrentproblemsofdemographicgrowthintoahistoricalperspective,butitsuggeststhatthecauseofrapidincreaseinpopulationinrecentyearsisnotasuddenenthusiasmformorechildren,butanimprovementintheconditionsthattraditionallyhavecausedhighmortality.
Demographichistorycanbedividedintotwomajorperiods:atimeoflong,slowgrowthwhichextendedfromabout8,000BC.tillapproximatelyAD.1650.Inthefirstperiodofsome9600years,thepopulationincreasedfromsome8millionto500millionin1650.Between1650andthepresent,thepopulationhasincreasedfrom500milliontomorethan4billion.Anditisestimatedthatbytheyear2000therewillbe6.2billionpeoplethroughouttheworld.Onewaytoappreciatethisdramaticdifferenceinsuchabstractnumbersistoreducethetimeframetosomethingthatismoremanageable.Between8000BCand1650,anaverageofonly50,000personswasbeingaddedannuallytotheworld’spopulationeachyear.Atpresent,thisnumberisaddedeverysixhours.Theincreaseisabout80,000,000personsannually.
1.Whichofthefollowingdemographicgrowthpatternismostsuitableforthelongthinpowderfuseanalogy?
A.Avirtuallystableorslightlydecreasingperiodandthenasuddenexplosionofpopulation.
B.Aslowgrowthforalongtimeandthenaperiodofrapid,dramaticincrease.
C.Toomanypeopleonearthandafewrapidincreaseinthenumberaddedeachyear.
D.Alongperiodwhendeathratesexceedsbirthratesandthenashortperiodwithhigherfertilityandlowermortality.
2.Duringthefirstperiodofdemographichistory,societieswereoftenindangerofextinctionbecause___.
A.onlyoneintenpersonscouldlivepast40.
B.therewashighermortalitythanfertilityinmostplaces.
C.itwastoodangeroustohavebabiesduetothepoorconditions.
D.ourancestorshadlittleenthusiasmformorechildren.
3.Whichstatementistrueaboutpopulationincrease?
A.Theremightbeanincreaseof2.2billionpersonsfromnowtotheyear2000.
B.About50,000babiesareborneverysixhoursatpresent.
C.Between8000BCandthepresent,thepopulationincreaseisabout80,000,000personseachyear.
D.Thepopulationincreasedfasterbetween8000BCand1650thanbetween1650andthepresent.
4.Theauthorofthepassageintendsto___.
A.warnpeopleagainstthepopulationexplosioninthenearfuture.
B.comparethedemographicgrowthpatterninthepastwiththatafter1650.
C.findoutthecauseforrapidincreaseinpopulationinrecentyears.
D.presentusaclearandcompletepictureofthedemographicgrowth.
5.Theword“demographic”inthefirstparagraphmeans___.
A.statisticsofhuman.
B.surroundingsstudy.
C.accumulationofhuman.
D.developmentofhuman.
PartVWriting
Directions:Forthispart,youareallowed30minutestowriteacompositiononthetopic:KeepingFit.Youshouldwriteatleast100—120wordsandyoushouldbaseyourcompositionontheoutline(giveninChinese)below:
1、保持健康的重要性;
2、保持健康的有效途径;
3、我的做法。
Theareagets________________(年降雨量不足五厘米).
PartIIVocabularyandStructure
Directions:Inthisparttherearefortyincompletesentences.Eachsentenceisfollowedbyfourchoices.ChoosetheonethatbestcompletesthesentenceandthenmarkyouranswerontheAnswerSheet.
21.Theteacherthestudentsonatourthroughtheartmuseum.
A.madeB.indicatedC.forcedD.took
22.Tom’sparentsdiedwhenhewasachild,sohewasbyhisrelatives.
A.grownupB.broughtupC.raisedD.fedup
23.Hereismycard.Let’skeepin.
A.touchB.relationC.connectionD.friendship
24.Sofarthereisnoproofpeoplefromotherplanetsdoexist.
A.whichB.howC.whatD.that
25.Thenewspapersreportedyesterdayseveralontheboundariesofthesetwocountries.
A.incidentsB.happeningsC.eventsD.accidents
26.We’veworkedouttheplanandnowwemustputitinto.
A.factB.realityC.practiceD.deed
27.Hedidn’tandsohefailedtheexamination.
A.workenoughhardB.hardworkenoughC.hardenoughworkD.workhardenough
28.NotuntilMr.SmithcametoChinawhatkindofcountrysheis.
A.heknewB.hedidn’tknowC.didheknowD.hecouldn’tknow
29.Scientistssayitmaybetenyearsthismedicinewasputtouse.
A.sinceB.beforeC.afterD.when
30.Insomecountries,iscalled“equality”doesnotreallymeanequalrightsforallpeople.
A.thatB.whatC.whichD.how
31.Wedidn’tknowhistelephonenumber,otherwisewehim.
A.wouldtelephoneB.wouldhavetelephone
C.hadtelephonedD.musthavetelephoned
32.We’vemissedthelastbus,I’mafraidwehavenobuttotakeataxi.
A.wayB.possibilityC.choiceD.selection
33.Luckily,mostsheepthefloodlastmonth.
A.enduredB.survivedC.livedD.passed
34.Myparentsalwaysletmehavemyownofliving.
A.wayB.methodC.mannerD.fashion
35.Likeotherlanguageskills,readingrequirespractice.
A.themostofB.muchoftheC.mostoftheD.moreofthe
36.Itisonlythroughpracticeonewillbeabletoswimskillfully.
A.whatB.whoC.thatD.which
37.Thebrainiscapableofignoringpainmessageoftoconcentrateonotheractivities.
A.itallowedB.isitallowedC.allowedD.allowedit
38.Don’tworry,Ihavealreadythemthedecision.
A.informed;withB.informed;ofC.informed;forD.informed;that
39.Thechildwassorryhismotherwhenhearrivedatthestation.
A.tomissB.havingmissedC.missingD.tohavemissed
40.Iwonderwhyhetodiscusstheproblematthemeeting.
A.declinedB.rejectedC.refusedD.delayed
41.Youcanhangupwhatyoulikeonthesewalls.
A.bareB.emptyC.blankD.vacant
42.Accordingtoa,themajoritywouldratherhavenewspaperswithoutagovernmentthanagovernmentwithoutnewspapers.
A.electionB.campaignC.pollD.vote
43.Thepopulationofthevillagehasdecreased150to500.
A.inB.atC.byD.with
44.ItseemsthatthereisthatIcan’tdo.
A.nothingB.anythingC.everythingD.none
45.Theyareoftencaringmoreaboutanimalsthanhumanbeings.
A.accusedifB.accusedwithC.chargedofD.chargedfor
46.agoodbeginningismade,thewordishalfdone.
A.AssoonasB.WhileC.AsD.Once
47.Georgecouldnothisfoolishmistake.
A.accountinB.countonC.countforD.accountfor
48.Wecameintothisfieldlate,sowemustworkhardtothelosttime.
A.makeupforB.makeoutC.keepupwithD.putupwith
49.Thenewlawwillcameintoonthedayitispassed.
A.effectB.useC.serviceD.existence
50.Wecanseparatethemixtureintothepurechemicalcompoundsitiscomposed.
A.inwhichB.ofwhatC.ofwhichD.fromwhich
51.Mrs.Lincolnhasthatsheisunabletogetajob.
A.suchsmalleducationB.solittleeducation
C.asuchlittleeducationD.asosmalleducation
52.Shecan’tpreventherlittleboyshootingbirds.
A.from;toB.on;atC.with;upD.from;at
53.Manycountriesareincreasingtheiruseofnaturalgas,windandotherformsof.
A.energyB.sourceC.powerD.material
54.Adarkenedskyinthedaytimeisusuallyandindicationthatastormis.
A.possiblecomingB.abouttotakeplace
C.closebyD.expectedtobesevere
55.Weallknowthatspeaklouderthanwords.
A.movementsB.performanceC.operationsD.actions
56.,hecouldnotcoverthewholedistanceinfifteenminutes.
A.FastashecanB.Ashecanranfast
C.IfhecanranfastD.Sinceheranfast
57.Agriculturalproductioninthatcountryhasincreasedinrecentyears.
A.vastlyB.strikinglyC.considerablyD.extremely
58.Peterhasplannedtosomemoneyeverymonthsothathecanbuyausedcarnextyear.
A.setasideB.setupC.setinD.setalong
59.AlthoughIspoketohimmanytimes,henevertookanyofwhatIsaid.
A.attentionB.noticeC.warningD.observation
60.Theyovercameallthedifficultiesandfulfilledtheplanthreemonthsaheadoftime,issomethingwehadnotexpected.
A.thatB.whatC.itD.which
