国开在线答案
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2024-03-05
[单选] 若线性方程组有无穷多解，则线性方程组（ ）．file-storage/1530514
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2024-03-05
[单选] --Ohdear!I’vejustbrokenawindow.--____!Itcan’tbehelped.
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2024-03-05
[单选] Heclaims________analienspacecraft.
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2024-03-05
[单选] It________bebettertoarriveattherailwaystationearlier.
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2024-03-05
[单选] Hekeepsgetting______________meandIreallydon’tknowwhatI’vedonewrong.
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2024-03-05
[完形填空] Thetiny(1)1SouthPacificstateofTongahasalwayshadseriousproblems(2)2money,andsoithasalwaysbeenentrepreneurial.IthassoldTonganpassports(3)3HongKongbusinessmen;itsoldpossiblesatellitebroadcastinglocationsinspace;itevenofficiallychangedtoadifferenttimezonetobethefirstcountrytowelcomethenewmillennium.NowTonga’slatest(4)4ventureisaplantobecometheworldcentreofspacetourism.TheTongagovernmenthasmadeanagreementwithaUScompanytoallowittouseoneofits170islandstolaunchrocketsthatwilltaketouristsonweek-longtripsintospaceatacostofUS$2millioneach.Forthisprice,spacetouristsreceive(5)5trainingina'resortsetting',followedbytheholidayofalifetimeorbitingtheEarth.Twoastronautpilotsandfourastronauttouristswill(6)6thetrip.However,scepticssaythatthesebudgetsareinadequate.AlthoughtheypredictthatspacetourismwilleventuallybringanincomeofUS10–20billionayear,theycalculatethatthebudgetof10–20billionayear,theycalculatethatthebudgetof10–20billionayear,theycalculatethatthebudgetof8millionpertripwillnotbeenoughtopay(7)7therequiredtechnology.Comparisonwiththecurrentspacetourismprogrammesuggeststhismathsmaybeaccurate.ToridetheRussianSoyuz(theonlytouristridecurrentlyavailable)costsmorethanUS$20millionperperson.However,otherpeople,includingoneimportantex-cosmonaut,criticisetheRussiangovernment(8)8raisingmoneyinthisway,eventhoughitusesthemoneyforthespaceprogramme.Intheex-cosmonaut's(9)9,itusesupRussia’sagreedquotaofspacemissionswithoutachievinganything.Healsobelievesthatthese(10)10touristswouldbeadangerinadifficultorlife-threateningcrisisinspace.A.poverty-strikeB.poverty-strikingC.poverty-strickenD.poverty-struck2.A.toraiseB.raisingC.risingD.torise3.A.toB.forC.withD.from4.A.money-madeB.money-to-makeC.money-makingD.money-to-be-made5.A.60-daysB.60daysC.60dayD.60days’6.A.makeB.giveC.getD.go7.A.toB.forC.withD.–8.A.ofB.fromC.atD.for9.A.opinionB.mindC.decisionD.brains10.A.unexperiencedB.ilexperiencedC.inexperiencedD.imexperienced
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2024-03-05
[完形填空] SincethetimewhenChairmanMaosaid,"Chinacannotevenputapotatoinspace,"thingshavechangedconsiderably.First,in1961,theRussiansgaveustheword”cosmonaut”,andthenthewordastronautfollowedfromtheUSA;whenChinacompleteditsfirstmannedmission,theworldwasgiventheword"taikonaut”.ChinahadlaunchedanumberofsatellitesbeforeOctober2003whenthefirstmannedspaceshipwaslaunched,poweredbytheLongMarch2Frocket.ThespacecraftShenzhouV,carryingCononelYangLiwei,orbitedtheEarth14timesinamissionthatlasted21hours.ThespacecraftwaslaunchedfromtheJiuquanSpaceCenterinGansuProvinceandmadeaperfectlandinginInnerMongolia.“IhaveseenmanylandingsbeforeandIthinkthatourshasbeenoneofthemostsuccessful,”saidCononelYang.The38-year-oldtaikonaunthadbeentakingpartinthestrenuousspacetrainingprogrammeforfiveyears.HisschedulepartlycarriedoutinRussia,tookallhistime."Ihaven’tbeenabletotakemysontokindergarten”,hesaid,"andIhavenevermetmyson’steachers.”ThelaunchwasoneofaseriesinaspaceprogrammethatisaimingtomakeChinaoneoftheworldleaders."Wearelookingatarangeofpossibilities.Chinaisexpectedtocompleteitsfirstexplorationofthemoonin2010.WewillestablishbasestherejustaswedidattheNorthandSouthPoles,”saidOuyangZiyuan,headofthemoonexplorationprogramme,”andwewon’truleoutassistancefromoutside.”WecanexpectChinatosendmoretaikonautsintospaceinfutureyears.题目：Theword“1”isinventedbytheChinese.A.cosmonautB.astronautC.taikonauntD.spacenaunt2.ThefirstmannedspacecraftwaslaunchedinChina2.A.beforeOctober2003B.inOctober2003C.afterOctober2003D.October20053.Theword“orbit”inPara2means“3”.A.tomovearoundB.tofollowC.toaccompanywithD.tobeanorbitalpath4.Whichwordhasthesimilarmeaningwith“strenuous”inPara4?4.A.Time-consumingB.interestingC.TerrifiedD.requiringalotofenergyandeffort5.OuyangZiyuanis5.A.anastronautB.anengineerofspaceshipC.theheadofthemoonexplorationprogrammeD.theleaderofNorthandSouthpolesexploration
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2024-03-05
[单选] Sheisusedtolivinginthecountryside.
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2024-03-05
[单选] 设，，则BA=（ ）．file-storage/1530201
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2024-03-05
[单选] 设为矩阵，为矩阵，且乘积矩阵有意义，则C为（ ）矩阵．file-storage/1530229
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