全国2010年4月概率论与数理统计(经)自考试题

全国2010年4月概率论与数理统计(经)自考试题一、单项选择题(本大题共10小题，每小题2分，共20分)在每小题列出的四个备选项中只有一个是符合题目要求的，请将其代码填写在题后的括号内。错选、多选或未选均无分。1.设A与B是任意两个互不相容事件，则下列结论中正确的是()A.P(A)=1-P(B)B.P(A-B)=P(B)C.P(AB)=P(A)P(B)D.P(A-B)=P(A)2.设A，B为两个随机事件，且，则P(A|B)=()A.1B.P(A)C.P(B)D.P(AB)3.下列函数中可作为随机变量分布函数的是()全国2010年4月高等教育综合英语(一)自考试题请将答案填在答题纸相应位置上I.用适当语法形式或词汇填空。从A、B、C、D四个选项中选出一个最佳答案，并将所选答案的字母写在答题纸相应的位置上。(本大题共20小题，每小题1分，共20分)1.Ididn’tseeJackatthemeetingyesterdayafternoon.He______it.A.mustn’tattendB.can’tattendC.mustn’thaveattendedD.can’thaveattended2.Itisessentialthatthisapplicationform______assoonaspossible.A.beingreturnedB.bereturnedC.tobereturnedD.willbereturned3.You______quityourjobuntilyoufindanotherone.A.hadbetternotB.hadbetternottoC.hadnotbetterD.hadnotbetterto4.Therearemorethansixtyproposals______attheconference.A.discussingB.beendiscussedC.todiscussD.tobediscussed5.______fortheirhelp,wecouldn’thavefinishedthetaskaheadoftime.A.IfitwerenotB.Hadn’titbeenC.HaditnotbeenD.Ifitwasnot6.Theroomneeds_____,butitwillhavetowaituntilTuesday.A.cleaningB.cleanedC.tocleanD.beingcleaned7.Thankyou,Mr.President.I’mveryhappyto______achancetovisityourcollege.A.beinggivenB.begivenC.giveD.havegiven8.Twodaysagohecamebackfromthevillage______hisfatherhadlived.A.thereB.thatC.whereD.which9.Scarcely______thehouse______itbegantorainheavily.A.didheleave,thanB.heleft,thanC.hadheleft,whenD.hehadleft,when10.Ididn’tgotoourclassget-togetherlastweekend,butIdowishI______there.A.wasB.willbeC.wereD.hadbeen11.HisvisittoLondonlastspringis______asagreatsuccess.A.lookedintoB.lookedtoC.lookedoverD.lookedupon12.Youwillcompleteyourprojectmoreeasilyifyoutake______ofallthefacilitieshere.A.privilegeB.advantageC.chanceD.care13.Seventyguestshadbeeninvitedtotheparty,butonlyfifty______.A.turnedaroundB.showedupC.turnedoutD.showedoff14.Allwecandoistohopethischemicalplantwilltake______toreduceairpollution.A.measuresB.waysC.positionsD.methods15.Shewasjusttoobusyyesterday,______shewouldsurelyhavegonetherewithyou.A.howeverB.forC.thereforeD.otherwise16.Hefoundithardtoconcentrateonhiswriting______somanypeoplearound.A.whenB.duringC.becauseD.with17.Whenshewasfive,thegirl’sfatherdecidedto______apianistofher.A.developB.buildC.makeD.do18.______automobilepollution,theairqualityinthiscityhasbecomeworse.A.AsaresultofB.InspiteofC.ButforD.Asfor19.Herfriendsdidnotexpectherto______alltheirsuggestions.A.turndownB.turnoverC.takeoffD.takeaway20.Themotorisn’t______enoughtopushthecarupthehill.A.toughB.powerfulC.strongD.bigII.阅读理解。认真阅读下面两篇短文，每篇短文后有五个问题，根据短文的内容从A、B、C、D四个选项中选择一个最佳答案，并将所选答案的字母写在答题纸相应的位置上。(本大题共10小题，每小题2分，共20分)Passage1NikolaiarrivedintheUnitedStatesfromEasternEuropewithhiswifeandtwosmallchildren.DespitethefactthatNikolaispokethreelanguages(Russian,German,andPolish),neitherhenorhiswifespokeanyEnglish.TheycametotheUnitedStatesasrefugees.Nikolaithoughthewasfortunatetohavelocatedadistantcousin,whosponsoredhimandhisfamilyandofferedthemtemporaryhousingintheapartmentbuildingthatheowned.VerysoonNikolaibeganpickingupEnglishwords.Heneededajobtosupporthisfamily,butbecauseofhispoorEnglishandlackofformaleducation,heworriedabouthisjobprospectsintheUnitedStates.Aneighborintheapartmentbuildingtoldhimthatjobadvertisementswerefrequentlypostedonanearbybulletinboard(公告牌).Nikolaiwenttothebulletinboardtogetherwithanacquaintance,whoreadandspokebothRussianandEnglish,toseewhatjobswereavailable.Nikolailistenedintentlyastheacquaintancereadseveraljobannouncementstohim.Oneparticularjoblistedontheboardcaughthisattention.Anearbymilitarybasewasadvertisingforbarbers.WhatmadetheannouncementmostattractivetoNikolaiwasthefactthattheannouncementincludedthewords“licensenotrequired”.Nikolaihadnevercutanyone’shair,butherememberedwatchingsailorsgiveeachotherhaircuts.Itseemedprettyeasysincethehaircutsalllookedaboutthesame—justcuttingoffallthehair.Hespenttheeveningpracticingshortsentencesthathehadlearnedfromhiscousinthatafternoon,including“Hello,it’snicetomeetyou”and“Yes,Ican!”ThenextdayNikolaitookthefirstbusouttothebase.AftershowingtheadtoanMPatthefrontgate，hereceivedamapofdirectionstothebarbershop.Afteranexchangeofgreetings，thebarbershopmanageraskedNikolai，“Canyougivesomeoneahaircut?”“Yes，”Nikolaianswered，“Ican.Cutitalloff!”NotonlydidNikolaigetthejob，butwithinjusttwoyears，hehadlearnedtodothejobsowellthathebecamethemanagerofthebarbershop.Hewastheonewhonowdidallofthehiring.HisEnglishlanguageskillshadimprovedimmensely,andhewasofteninvitedovertothetopofficers’homesfordinner.Healsofellinlovewithcountrymusic，sincemanyofthebasepersonnelwerefromsouthernstates，andthistypeofmusicwasconstantlyplayedintheshop.21.WhenNikolaifirstcametoAmericahefeltfortunateforthefollowingreasonsEXCEPT______.A.hehadadistantcousintohelphimB.hefoundtemporaryhousingC.hecouldsupporthisfamilyD.hespokethreelanguages22.Nikolaiwenttothebulletinboardinorderto______.A.lookforjobinformationB.postnoticesontheboardC.readjobannouncementsD.listjobopportunities23.WhydidNikolaidecidetoapplyforthejobatthebarbershop?A.Hehadabarber’slicense.B.Hethoughtiteasytogetthejob.C.Hehadwatchedbarberscutsailors’hair.D.