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完形填空Thenumbersenseisnottheabilitytocount,buttheabilitytorecognizea1innumber.Humanbeingsarebornwiththisability.2experimentsshowthatmanyanimalsare,too.Forexample,Forexample,manybirdshavegoodnumbersense.Ifanesthasfoureggsandyouremoveone,thebirdwillnot3.However,ifyouremovetwo,thebird4leaves.Thismeansthatthebirdknowsthe5betweentwoandthree.1.A.riseB.patternC.changeD.trend2.A.ImportantlyB.SurprisinglyC.DisappointedlyD.Fortunately2.B因“实验表明许多动物也跟人类一样具有这种能力”，这是“令人惊讶的”。其他选项“重要地”“失望地”“幸运地”与上下文内容无联系。3.A.surviveB.careC.hatchD.notice4.A.generallyB.sincerelyC.casuallyD.Deliberately5.A.distanceB.rangeC.differenceD.interval...Forexample,Forexample,manybirdshavegoodnumbersense.Ifanesthasfoureggsandyouremoveone,thebirdwillnot3.However,ifyouremovetwo,thebird4leaves.Thismeansthatthebirdknowsthe5betweentwoandthree.3.D结合下句，特别是however可知，上下句的大意应是“如果鸟巢内有四个蛋，你移走一个蛋，这只鸟会没有注意到；然而，如果你移走两个蛋，这只鸟就会离开这里了”。其他选项“幸存”“关心”“孵化”不合语境。4.A把这只鸟“通常”会离开，“真诚地”“无意地”“故意地”不合语境。Anotherinterestingexperimentshowedabird’s__6_numbersense.Amanwastryingtotakeaphotoofacrow(乌鸦)thathasanestinatower,butthecrowalwaysleftwhenshesawhimcoming.Thebirddidnot__7___untilthemanleftthetower.6.A.amazingB.annoyingC.satisfyingD.Disturbing7.A.relaxB.recoverC.reactD.return6.A与上文中goodnumbersense(良好的数字感)中的good相对应，也与第2题的答案surprising相对，故选“amazing(令人惊异的)”，近义复现。8.A.appointmentB.excuseC.ideaD.explanationThemanhadan__8__.Hetookanothermanwithhimtothetower.Onemanleftandtheotherstayed,buttheydidnot__9__thebird…Itwasnotuntilfivemenwentintothetowerandonlyfourleftthattheywere…abletofoolthecrow.9.A.foolB.hurtC.catchD.kill9.A由but可知，他们并没能“欺骗”那只乌鸦。与下文foolthecrow中的fool是原词复现。8.C从下文看，这个人有了一个“主意”或想了一个“办法”。Thecrowstayedawayuntilthesecondmanleft,too.Theexperimentwas__10__withthreemen,andthenfourmen.Butthecrowdidnotreturntothenestuntilallthemenwere__11__.Itwasnotuntilfivemenwentintothetowerandonlyfourleftthattheywere__12__abletofoolthecrow.10.A.reportedB.repeatedC.designedD.Approved11.A.confusedB.goneC.tiredD.Drunk12.A.graduallyB.luckilyC.strangelyD.finally10.B该实验由一个人去接近那只乌鸦，然后带一个人即一共两个人去做这个实验，接着三个人、四个人去“重复”做这个实验。12.D前面已分别由一个人、二个人、三个人、四个人重复做了四次了，直到五个人进了塔，只走了四个，即还有一个在塔里，他们才“最终”欺骗了这只乌鸦。Howgoodhisthehuman’snumbersense?It’snotverygood.Forexample,babiesaboutfourteenmonthsoldalmostalwaysnoticeifsomethingistakenawayfroma__13__group.Butwhenthenumbergoesbeyondthreeorfour,thechildrenare__14__fooled.13.A.singleB.smallC.localD.new14.A.seldomB.temporarilyC.merelyD.often14.D由but可知，后文是表示与alwaysnotice相对的意思，当数理超过三四个以后，就“常常”能欺骗这些婴儿了。Itseemsthatnumbersenseissomethingwehaveincommonwithmanyanimalsinthisworldandthatourhuman___15___isnotmuchbetterthanacrow’s.A.sightB.natureC.abilityD.belief15.C由文章的首段或首句可知，本文在讲到人具有数字感的同时，重点是讲动物的数字感，即有辨别数字变化的“能力”。ability是原词复现。