国开在线答案
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2024-03-05
[单选] 线性方程组无解，则（ ）．1530463/in-rich-content?created_at=1647290159
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2024-03-05
[单选] 设线性方程组，则方程组有解的充分必要条件是（ ）．1530473/in-rich-content?created_at=1647290161
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2024-03-05
[单选] 对线性方程组的增广矩阵做初等行变换可得则当（ ）时，该方程组无解．file-storage/1530483
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2024-03-05
[单选] 若线性方程组有唯一解，则线性方程组（ ）．file-storage/1530512
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2024-03-05
[单选] Thisisthedictionary______________IdependalotwheneverIhaveproblemswithnewwords.
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2024-03-05
[单选] Allkindsofvegetables___________________inthefreemarket.
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2024-03-05
[单选] Heisoverfifty,buthelooksasifhe____________onlyinhisthirties.
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2024-03-05
[单选] Ithinkthissofais___thanthatone.
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2024-03-05
[单选] Youngchildrensoon_______________wordstheyheartheireldersuse.
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2024-03-05
[填空] Interviewer–WhyisEnglishsoimportant?David–Well,Englishissoimportantprimarilybecausesomanypeoplespeakitanduseit,soithasnowbecomethelinguafrancaintheworld(1)awaythatwe'veneverseenbefore.We(2)aworldlanguageofthiskindbefore.Sopeoplearelearningitnotjusttobeabletocommunicate(3)nativespeakers,butalsowithspeakersofotherlanguagesaroundtheworld.Interviewer–Andwhyhasitbecomethatdominantlanguage?David–Ithinkthereason(4)thatisactuallyverycomplicated,althoughinthetwentiethcentury,wecanjustseethatit'stheriseoftheUSmilitaryandconsumerpower.Imeanthetechnology,allthebigdevelopmentsintechnologylargelycamefromtheUS.Soallofthesedevelopmentsactually(5)withintheEnglishlanguage,andpeoplehadtolearnEnglishinordertounderstandthem,ortobenefit(6)them.TheInternetisonlyoneexampleofthatkind.Oncealanguagehas(7)thatpositionofdominance,it'sactuallyverydifficult(8)it.Sowecouldbeseeingtheemergenceofotherbiglanguagesintheworld(9)moreimportantthantheyhavebeen,likeSpanish,butit'sunlikely(10)they'regoingtoshiftEnglishfromitspositionofdominance.A.onB.inC.withD.to2.A.neverhaveB.neverhadC.haveneverhadD.hadneverhad3.A.toB.inC.withD.and4.A.forB.toC.inD.on5.A.produceB.areproducedC.haveproducedD.wereproduced6.A.forB.toC.fromD.with7.A.gotintoB.gotoutofC.gotinD.gotout8.A.shiftedB.toshiftC.shiftingD.shift9.A.becomeB.tobecomeC.becomingD.became10.A.thatB.whichC.whatD.who
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