Computers will flourish because they enable us to accomplish tasks that

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问题 Computers will flourish because they enable us to accomplish tasks that

选项 A、could never before have been undertaken
B、would never before have undertaken
C、couldn’t be undertaken
D、mustn’t have been undertaken

答案A

解析此题只要正确理解了句子的意思，做出正确选择并不难。句意为："计算机使人们得以干以前干不了的事，因此它将兴旺发达起来"。用could never before have been un—dertaken暗含虚拟语气的意义。虽然B项也是虚拟形式，但语态不对。

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Computers will flourish because they enable us to accomplish tasks that

在职攻硕英语联考

Ifthereistheneedtocompeteinacrowd,tobattle______theedgethesureststrategyistodeveloptheunexpected.

Everywheremanisalteringthebalanceofnature.Heisfacilitatingthespreadofplantsandanimalsintonewregions，sometimes

Whyshouldanyonebuythelatestvolumeintheever-expandingDictionaryofNationalBiography?Idonotmeanthatitisbad,as

Botany,thestudyofplants,occupiesapeculiarpositioninthehistoryofhumanknowledge.Formanythousandsofyearsitwas

TomBrennanwasworkinginaPhiladelphiaofficebuildingwhenhenoticedablackbag.Thebagcontainedabook.Thischance

Initialvoyagesintospaceintroducedquestionsscientistshadneverbeforeconsidered.Couldanastronautswallowfoodinzero

Publicgoodsarethosecommoditiesfromwhoseenjoymentnobodycanbe(41)excluded.Everybodyisfreeto(42)thebenefits

A、Takingaphoto.B、Goingthroughcustoms.C、Havingaphysicalexam.D、Conductinganinterview.A男士说：嗨，你能不能姿势摆得轻松些?女士说：可是我的双手该怎么

Althoughmissileagencyofficialssaythenewkillvehicleisreliable,someoutsideexpertsareskeptical.

Shehadclearlyno______ofdoinganyworkalthoughshewasverywellpaid.

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患儿，8个月，因肺炎入院，现突然烦躁不安，发绀，且进行性加重，体检：呼吸60次/分，脉搏170/分，心音低钝，两肺布满细湿啰音，此时诊断为肺炎合并心力衰竭。心力衰竭缓解的主要指标是()。

杭州市人民政府制定的规章应报哪些机关备案?()

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