- 閱讀理解A
題干：Thankstoslumpingmarkets,investmentbanksaresheddingmanyoftheirhighly-paidtraders.Whenmarketsrecover,thebanksmightbetemptedtoreplacethemwithrathercheapertalent.Onealternativehasbeenaroundforawhilebuthasyettocatchon:autonomoustradingagents—computersprogrammedtoactlikethehumanversionwithoutsuchpeskycostsasholidays,lunchbreaksorbonuses.Programtradinghas,ofcourse,beendonebefore;someblamedthe1987stockmarketcrashoncomputersinstructedwithsimpledecision-makingrules.Butrobotscanbesmarterthanthat.DaveCliff,aresearcheratHewlett-PackardLaboratoriesinBristol,England,hasbeencreatingtradingrobotsforsevenyears.Incomputersimulationsheletsthemevolve"genetically",andsoallowsthemtoadaptandfitmodelsofreal-worldfinancialmarkets.Hisexperimentshavesuggestedthataredesignofsomemarketscouldleadtogreaterefficiency.Lastyear,aresearchgroupatIBMshowedthatMrCliff'sartificialtraderscouldconsistentlybeatthehumanvariety,invariouskindsofmarket.Nearlyalltaketheshapeofanauction.Onewell-knowntypeistheEnglishauction,familiartopatronsofthesalesroomsofChristie'sandSotheby's,wheresellerskeepmumontheirofferprice,andbuyersincreasetheirbidsbystagesuntilonlyoneremains.AttheotherextremeistheDutchauction,familiarto17th-centurytulip-tradersintheNetherlandsaswellastobiddersforAmericanTreasurybonds.Here,buyersremainsilent,andasellerreduceshispriceuntilitisaccepted.Mostmarketsforshares,commodities,foreignexchangeandderivativesareahybridofthesetwotypes:buyersandsellerscanannouncetheirbidorofferpricesatanytime,anddealsareconstantlybeingclosed,aso-called"continuousdoubleauction".MrCliff'snovelideawastoapplyhisevolutionarycomputerprogramstomarketplacesthemselves.Whynot,hethought,tryandseewhattypesofauctionwouldlettradersconvergemostquicklytowardsanequilibriumprice?Theresultsweresurprising.Inhismodels,auctionsthatletbuyersandsellersbidatanytimelikemostoftoday'sfinancialexchangeswerelessefficientthanonesthatrequiredrelativelymorebidsfromeitherbuyersorsellers.These"evolvedauctions"alsowithstoodbigmarketshocks,suchascrashesandpanics,betterthantoday'sreal-worldversions.MrCliff'smostrecentresults,whichwillbepresentedinSydney,Australia,onDecember10th,showthatthebesttypeofauctionforanymarketdependscruciallyonevenslightdifferencesinthenumberofbuyersandsellers.BankofAmericahasbeeninvestigatingthesenewauctions,alongwithrobotictraders,forpossibleuseinelectronicexchanges.Thehopeisthattoday'sfinancialauctionsandonlinemarketplacesmightworkbetterbybecomingmoreliketheirEnglishandDutchforebears.Butwhattocallsuchmulti-ethnichybrids?Here'sintroducingthe"Cliffhanger".
題目：Which of the following is true according to the text?（） - A 、David’s robot traders have now been used in real-world markets
- B 、Robot traders can evolve like creatures
- C 、There is room for improvement in efficiency in trading markets
- D 、The English auction is the most popular trading form
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參考答案【正確答案：C】
根據(jù)文章第二段，克里夫的研究表明“對(duì)某些市場(chǎng)進(jìn)行重新設(shè)計(jì)可能會(huì)大幅提高效率。”可見(jiàn)交易市場(chǎng)仍然有提高效率的空間。
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熱門試題換一換
- 某影城將在“十一”黃金周7天（周一至周日）放映14部電影，其中有5部科幻片，3部警匪片，3部武俠片，2部戰(zhàn)爭(zhēng)片，1部愛(ài)情片。限于條件，影城每天放映兩部電影，已知： （1）除科幻片安排在周四外，其余6天每天放映的兩部電影都屬于不同的類型； （2）愛(ài)情片安排在周日； （3）科幻片或武俠片沒(méi)有安排在同一天； （4）警匪片和戰(zhàn)爭(zhēng)片沒(méi)有安排在同一天。 根據(jù)以上信息，如果同類影片放映日期連續(xù)，則周六可以放映的電影是哪項(xiàng)（）。
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- The author writes this passage to（）.
- 點(diǎn)p（x,y）滿足不等式組，則p點(diǎn)所在圓半徑的取值范圍是（）。
- （5）
- According to the author, greenspace facilities should be designed in such a way that_____.
- In the author’s opinion’ the absorption of immigrants into American society is_____.
- The text intends to express the idea that_____.
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