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在平面直角坐标系中，已知集合A＝{（x，y）|（t为参数，t∈[﹣1，0]）}，集合B＝{（x，y）|x2+y2＝1}．则 （1）点集P＝{（x，y）|x＝x1﹣m，y＝y1，（x1，y1）∈A，...
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高三下学期数学《》真题及答案
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已知曲线C.的极坐标方程是ρ=2cosθ以极点为平面直角坐标系的原点极轴为x轴的正半轴建立平面直角坐
以下给出的对应是不是从集合A到集合B的映射集合A={P|P是平面直角坐标系中的点}集合B={xy|x
绘图题已知A点坐标为Xa＝5cmYa＝－5cm绘图确定A点在测量平面直角坐标系中的平面位置
集合{xy|y＝2x＋3}表示
方程y＝2x＋3
点(x，y)
函数y＝2x＋3图象上的所有点组成的集合
平面直角坐标系中的所有点组成的集合
在平面直角坐标系xOy中已知直线l的参数方程为t为参数直线l与抛物线y2＝4x相交于A.B.两点求线
平面直角坐标系中第一象限的点组成的集合可表示为{xy|________}.
选修4-4坐标系与参数方程在平面直角坐标系xoy中已知曲线C1x2+y2=1以平面直角坐标系xoy的
已知极坐标系的极点在平面直角坐标系的原点O处极轴与x轴的非负半轴重合且长度单位相同若圆C的极坐标方程
在极坐标系中圆C.的极坐标方程为ρ2=4ρcosθ+sinθ﹣6.若以极点O.为原点极轴所在直线为x
12.00分已知曲线C的极坐标方程是ρ=1以极点为平面直角坐标系的原点极轴为x轴的正半轴建立平面直
在平面直角坐标系xoy中圆C.的参数方程为t为参数.在极坐标系与平面直角坐标系xoy取相同的长度单位
已知圆C的极坐标方程是ρ＝4cosθ以极点为平面直角坐标系的原点极轴为x轴的正半轴建立平面直角坐标
下列说法错误的是
高斯平面直角坐标系的纵轴为X轴
高斯平面直角坐标系与数学中的笛卡尔坐标系不同
高斯平面直角坐标系中方位角起算是从X轴的北方向开始
高斯平面直角坐标系中逆时针划分为4个象限
已知曲线C.1在平面直角坐标系中的参数方程为t为参数以坐标原点O.为极点x轴的非负半轴为极轴建立极坐
在平面直角坐标系中以坐标原点为极点x轴的非负半轴为极轴建立极坐标系.已知曲线C.的极坐标方程为ρ=4
在平面直角坐标系中已知直线的参数方程是为参数以为极点轴正半轴为极轴的极坐标系中圆的极坐标方程为.Ⅰ写
在平面直角坐标系xOy中直线l的参数方程为t为参数P.Q.分别为直线l与x轴y轴的交点线段PQ的中点
已知曲线C的极坐标方程为4ρ2cos2θ+9ρ2sin2θ=36以极点为平面直角坐标系的原点极轴为x
在平面直角坐标系xoy中已知直线l的参数方程为参数t∈R.同时在以坐标原点为极点x轴的正半轴为极轴建
在平面直角坐标系xoy中已知曲线C.的参数方程为α为参数现以O.为极点x轴的正半轴为极轴建立极坐标系
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5分After61graduatefromUniversityDavidHolmeswenttoChinatostudyChineseatBeijingLanguageandCultureUniversity.Twoyears62hewasabletospeak63fluentlyChinese.Upon64finishhisstudieshestartedtravelinginChina.InChinahedeveloped65interestinteachingEnglishtoChinesestudents.66hereturnedtoBritaintwomonthsagohebrought67fromChinamanyinterestingbookspaintingsandphotos.Hedonatedmostofthemtoourschoollibrary.Thepaintings68Daviddonatedtotheschoolarebeingshowninthe69exhibitroom.TeachersandstudentsatourschoolwishtothankDavidforhis70kind. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70.
10分定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处每处错误仅涉及一个单词的增加删除或修改. 增加把缺词处加个漏字符号∧并在其下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错的词下划一横线并在该词下面写出修改后的词. 注意1.每处错误及其修改均仅限一词 2.只允许修改10处多者从第11处起不记分. DearMike YousaidyouwanttoknowalotabouttheEnglishClubofourschool.ItwasthreeyearsagowhentheEnglishClubwasborn.Itwasfoundtoimprovestudents'interestinEnglish.ThoseinterestedinEnglishgottogetherinthemultimediaclassroomeverySaturdayafternoon.Therearemanyactivitiesholdinginit.StudentscanwatchvariouslyEnglishfilms.TheycanaswellaslearntosingEnglishsongswhichcanhelpthemlearnEnglishwordbyheart.Inadditionmanytopicscanbediscussedthereinalanguage.Howdoyoulikeourclub?I'mlookingforwardtoearlyreply. Yours LiHua.
在某2L恒容密团容器中充入2molXg和1molYg发生反应2Xg+Yg⇌3Zg△H反应过程中持续升高温度测得混合体系中X的体积分数与温度的关系如图所示下列推断正确的是
.5分Theoldman'ssoncametothankthepolicemanwithhelphefinallyfoundhismother.
6分ProudlyreadingmywordsIglancedaroundtheroomonlytofindmyclassmatesbearingbigsmilesontheirfacesandtearsintheireyes.ConfusedIglancedtowardmystone﹣facedteacher.HavingnochoiceIslowlyraisedthereportIhadslavedoverhopingtohidemyself.Whatcouldbecausingeveryonetoactthisway? QuicklyIflashedbacktothedayMissLancelotgavemethetask.ThiswasthefirstrealtalkIreceivedinmynewschool.ItseemedsimplegoontheInternetandfindinformationaboutamannamedGeorgeWashington.SincemyideaofhistorycamefromanancientteacherinmyhomecountryIhadneverheardofthatnamebefore.AsIsearchedthenameofthisfellowitbecameevidentthatthereweretwopeoplebearingthesamenamewholookedcompletelydifferent!OneinventedhundredsofusesforpeanutswhiletheotherledsomesortofarmyacrossAmerica.Istaredatthescreenwonderingwhichonemyteachermeant.Icalledmygrandfatherforagoldenpieceofadviceflip掷acoin.Heads﹣thecommanderandtails﹣thepeanutsguy.Ah!TailsmyreportwouldbeaboutthegreatmanwhoinventedpeanutbutterGeorgeWashington WeekslaterstandingbeforethisunfriendlymassIwastotallylost.OhwellIloweredthepaperandsatdownatmydeskburningtofindoutwhatIhaddonewrong.AsaclassmatebeganhisreportitallbecameclearMyreportisonGeorgeWashingtonthemanwhostartedtheAmericanRevolution.Thewholeworldbecamequite!HowcouldIknowthatshemeantthatGeorgeWashington? Obviouslymygradewasawful.HeartbrokenbutfearlessIdecidedtoturnthisaround.ItalkedtoMissLancelotbutsheinsistedNore﹣dosnonewgrade.IfeltthatthepunishmentwasnotjustifiedandIbelievedIdeservedasecondchance.ConsequentlyIthrewmyselfheartilyintomyworkfortherestoftheschoolyear.TenmonthslaterthatchanceunfoldedasIfoundmyselfsittingintheheadmaster'sofficewithmygrandfathernowhavinganentirelydifferentconversation.Ismiledandflashedbacktotheembarrassingmomentatthebeginningoftheyearastheheadmasterinformedmeofmychancetoskipthesixthgrade.Justiceissweet! 33.Whywastheauthorconfusedaboutthetask? A.HewasunfamiliarwithAmericanhistory. B.Hefollowedtheadviceandflippedacoin. C.Heforgothisteacher'sinstruction. D.Hewasnewattheschool. 34.TheunderlinedwordburninginPara.3probablymeans. A.annoyed B.ashamed C.ready D.eager 35.Intheendtheauthorturnedthingsaround. A.byredoinghistask B.throughhisownefforts C.withthehelpofhisgrandfather D.undertheguidanceofhisheadmaster.
.5分IwillhirethemantheysayisagoodEnglishspeaker.
5分假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错词下划一横线并在该词下面写出修改后的词. 注意1.每处错误及其修改均仅限一词 2.只允许修改10处多者从第11处起不计分. ThedaybeforeyesterdayIwenttothebookstorewhereisnearourschooltobuyareferencebook.ItwasSaturdaysotherewasmanypeople.WiththehelpabouttheshopassistantsIquicklygotthebookIneeded.IwasabouttoleavewhenIfoundsomeonetryingtostealamanmoney.AlthoughIwasnervousbutItriedtothinkofawaytohelphim.Suddenlyagoodideacameme.Isteppedontheman'sfootonpurpose.AsIexpectedtheman'sscreamgivesthethiefafrightwhoquickwalkedoutoftheshop.Afterhearmyexplanationthemansmiledandshowedgreatgratitudetohim.
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6分 EVENTS LongMarchexhibit TheShanghaiHistoryMuseumisputtingonanexhibitiontomarkthe60thanniversaryoftheLongMarch.Onshowaremorethan220photosand40itemsthatexplainwithpictureshowthecommunistRedArmydrewbackfromitsbesieged被围困的basesinJiangxiProvinceandfoughtitswaytonorthernShanxiProvinceinthemid﹣1930s.ExplanationsareallinChinese.TheshowwillendonNovember20. Time1000am﹣400pmAddress1286HongqiaoRoad Admission8yuanforChinese/15yuanforforeigners Thaielephants EightelephantsfromThailandareentertainingvisitorsatChangfengParkbyridingbikesplayingbasketballbalancingonabeamdancingandblowingamouthorgan.Peopleareencouragedtohaveatug﹣of﹣war拔河比赛withtheanimalsorlieonthegroundandhavetheelephantswalkoverthem.Theelephantsgivethreeshowsadayat930am330pmand800pmandthereisanadditionalshowatl30pmatweekends.TheshowwillendonNovember15. Address189DaduheRoadAdmission30﹣40yuan Dancingdolphins DolphinsjumpingfromthewatertotouchaballswayingtheirbodiestomusickissingpeopleanddoingmathbytappingtheirtailshavemadethedolphinariuminPeaceParkanattractionforchildren.Sealsandsealionsalsoperform. Hours1030am400pmand730pm Admission20yuanforadultsand10yuanforchildren. 1.IfyougotovisittheLongMarchexhibitionwithanAustralianhowmuchwillyoupayaltogetherfortheadmission? A.16yuan. B.30yuan. C.23yuan. D.20yuan. 2.WhichofthefollowingisNOTdonebytheThaielephants? A.Ridingbicycles. B.Blowingamouth﹣organ. C.Havingatug﹣of﹣warwithpeople. D.Doingmath. 3.ThedolphinariuminPeaceParkisahallwhereyoucansee. A.onlysealsandsealionsperform B.onlydolphinsperform C.notonlydolphinsbutalsosealsandsealionsperform D.onlysealsperform
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30分Mrs.Jonesisa92﹣year﹣oldlady.Sheisblindandherhusbandpassedawayrecentlywhichmadeit41 forhertomovetoanursinghometoday.Aftermanyhoursofwaiting42inthehallofthenursinghomeshesmiledsweetlywhentoldherroomwas43.AsshewenttotheelevatoronherwheelchairIprovidedasimple44ofhersmallroom. I45itshestatedwiththeenthusiasmofaneight﹣year﹣oldhavingjustbeen46withanewpetdog. Mrs.Jonesyouhaven't47theroom…justwait. Thatdoesn'thaveanythingtodo48itshereplied.49issomethingyoudecideonaheadoftime.WhetherIlikemyroomornotdoesn't50howthefurnitureisarranged.It'showIarrangemy51.Ihavealready52toloveit.It'sa53ImakeeverymorningwhenIwakeup.Ihaveachoiceto54everymorning.Icaneither55thedayinbedthinkingofthedifficultyIhavewiththepartsmybodythatnolongerwork56getoutofbedandbe57fortheonesthatdowork.Eachdayisagiftand58myeyesopenI'llfocusonthenewdayandallthehappymemoriesI'vestored. Andwithasmile.ShecontinuedOldageislikeabankaccount.Youwithdraw取出fromwhatyou'veputin.Somy59toyouwouldbetostorealotofhappinessinthebankaccountofmemories.RememberfivesimplerulestobehappyFreeyourheartfromhatred.Freeyourmindfromworries.Livesimply.Givemore.Expect60. 41.A.important B.difficult C.necessary D.effective 42.A.regularly B.constantly C.generously D.patiently 43.A.ready B.cheap C.big D.far 44.A.position B.description C.location D.conversation 45.A.know B.need C.love D.believe 46.A.supported B.presented C.shared D.required 47.A.bought B.seen C.got D.booked 48.A.in B.on C.with D.for 49.A.Happiness B.Success C.Chance D.Fortune 50.A.leadto B.comefrom C.makefor D.dependon 51.A.mind B.room C.work D.life 52.A.promised B.decided C.refused D.demanded 53.A.plan B.wish C.decision D.goal 54.A.make B.take C.draw D.give 55.A.live B.lose C.miss D.spend 56.A.or B.and C.but D.so 57.A.grateful B.hopeful C.confident D.positive 58.A.asfaras B.aslongas C.evenif D.incase 59.A.hope B.warn C.advise D.offer 60.A.fewer B.higher C.greater D.less
catchsight看见
8分BeforeIhadmysonIspenttwoyearsworkingwithchildrenwithdisabilities.Ilearnedthatshoutingandthreatsofpunishmentwouldresultinadisaster.Comingupagainsttheirbehaviourcouldonlymakethejobharderandtheirbehaviourmoreextreme.Ifoundsomethingthatworkedthough. Therewasaverynaughtyboyinthenurseryandateacherwhowasgenerallyveryconfidentwiththechildrenwasaskedtotakechargeofhim.Onedaytheboyjoinedasessionintheroomnexttomine.Hisappearancecreatedanatmosphereoftension.Hespenttheentiresessionrunningaroundhittingandkickinganddestroyingproperty. Iwasinthecraftroomworkingwithsomeotherchildrenwhenmyco﹣workertoldmethatthisboy'steacherwasintearsandcouldnotgetcontrolofthesituation.Asweweretalkingtheboyranin.Itoldmyco﹣workerthatIwouldtakecareofhim. Iclosedthedoor.Hewasfullofenergythrowingthingsaroundandmakingahugemess.ButIcouldseethathewasdoingallthesetoannoyme.Heneededconnectionandthiswastheonlywayheknewhowtoaskforit.SoIsatbackdownandkeptquiet.Thenhesloweddownandbeganmakingarocket.Italkedtohimaboutit.WecontinuedlikethisforafewminutesbeforeIslippedintotheconversation Sowhathappenedtoday? Itwaspurelyaquestionnoblameorangerinmytone.IbelievethatifIhadcriticizedhimthegatethatwasslowlyopeningwouldhaveshutfirmlyclosed.Hetoldmethattheteacherdidn'tlethimdowhatheknewwellduetosafetybutaskedhimtodowhathedisliked.Healsoadmittedthathehadenjoyedmakingherrunaroundandsawitasagame.Iexplainedthathisteacherhadnotseenitasagameandwasveryupset.Thisagainwasstatedsimplyasafact.Isuggestedthatnexttimehehadasessionhetalkaboutwhathehopedtodoatthestartwhichmightbeeasierforeveryone.Heagreedandwasquietforamoment.Thenhelookedatmewithtearsinhiseyesbeforequietlyaskingifhecouldgotofindhisteachertoapologize. 51.Theboymadetroubleforhisteacherbecausehe. A.wasaccusedofdestroyingproperty B.wastoldnottoyellatotherchildren C.wasmadetodothingsagainsthiswill D.wasblamedforcreatinganairoftension 52.Whydidn'ttheauthordoanythingabouttheboy'sbadbehavioratfirst? A.Shedidn'twanttomakeitworse. B.Shedidn'tmindthehugemessatall. C.Shewastiredofshoutingandthreats. D.Shehadn'tthoughtofacopingstrategy. 53.Theauthormanagedtogettheboytotalktoherby. A.playinggameswithhim B.givinghimagoodsuggestion C.describinghisteacher'sfeelings D.avoidingmakingcriticalremarks 54.Whydidtheboyhavetearsinhiseyesintheend? A.Hewassorryabouthisreputation. B.Hewasregretfulabouthisbehavior. C.Hewasfearfuloftheauthor'swarning. D.Hewassadfortheauthor'smisunderstanding.
8分HalfayearbeforegraduationfromcollegemysonDavidbegantoseekajob.Duetothefinancialcrisisthecompetitionwasever﹣fierce.Mysontargetedacompanythatwaslocatedinacoastalcity.ItwasintendedtoemployonlyonepersonamongmorethantwentycandidatesIsaidtoDavidYoushouldnotharbortoomuchhopeforfearthatyouwouldfeelterriblydisappointedwhenyoufail.HesaidtomeIamnotafraidofdisappointment.AslongasItrytherewillalwaysbehope! Threeyoungmencouldenterthefinalroundwhichwouldlaterdecideonepersontobeemployed.EverythingseemedtogoquitewellandDavidenteredthefinalroundinaweek. Unexpectedlytheinterviewwasunbelievablysimpleduringwhichtheintervieweronlychattedwiththemforawhile.Theinterviewstrategiesmysonpreparedwerenotusefulatall.Theinterviewersaidthecompanywouldinformthemoftheresultin3days.OnthemorningofthethirddayDavidreceivedthetextfromthecompanythathewasnotemployed.Davidfeltdisappointed. InnightfallthatdayDavidsuddenlytoldmeexcitedlyonphonethathehadbeenemployed.GreatlysurprisedIaskedhimWhat'sthewholematter?Davidtoldmethathereceivedanothertextsayingthathewasemployed.Davidfeltveryconfusedaboutit.Laterhefoundoutthefirsttextsenttohimwasalsopartofthetestintheinterview.ThreemenreceivedthesametextthismorningandonlyDavid'sreplywassatisfyingtothecompany.IaskedmysonHowdidallofyourreply?MysonsaidOnedidnotreply.Theothersaid‘Goodbye'andIsaid‘Thankyou'. OnlythendidIknowthatmyson'shopecameinthatway.ThatiswhenyoufeeldisappointeddonotforgettosayThankyoutotheonewhodisappointsyou.ActuallyitisapieceofcaketosayThankyou.SayingThankyoushowsrespectforothers'workanddemonstratesyourgrandgenerosity.Thereforewhileunderthesameconditionyouwillgettheupperhandintermsofopportunitiescomparedwithothers! 28.WhatcanwelearnaboutDavidfromthepassage? A.BeingshortofmoneyDavidwaseagertofindajob. B.Hewantedtoworkforacompanyinthelocalcity. C.Hewasnothopefulofgettingthejob. D.Hetookapositiveattitudetowardsfailure. 29.WhichofthefollowingistrueaboutDavid'sfinalroundinterview? A.Davidwasnervousbecausethecompetitionwasreallyfierce. B.David'spreparationsfortheinterviewwerenotused. C.Thethreeyoungmenperformedequallywell. D.Theresultwasannouncedonthespot. 30.WhenDavidgotthejobofferhefeltatfirst. A.excitedB.puzzledC.nervousD.pleased 31.Whatcanbethebesttitleofthepassage? A.SunshineAlwaysAppearsAfterStorm B.NeverGiveUpHope C.TheMagicPowerofThankYou D.AYoungManAndHisHope.
化学与生活社会密切相关．下列说法错误的是
某研究性学习小组的同学通过对亚硫酸钠组成元素的价态进行分析后认为Na2SO3溶液在存放过程中有可能变质若已变质则相应反应的化学方程式． 1甲同学设计了如下两种方案来检验Na2SO3溶液是否变质． 方案Ⅰ取样加入稀盐酸有气泡生成认为Na2SO3溶液没有变质． 方案Ⅱ取样加入氯化钡溶液有白色沉淀生成认为Na2SO3溶液完全变质． 乙同学认为上述两种方案均不合理乙同学作出判断的依据分别是方案Ⅰ 方案Ⅱ． 2乙同学设计如图所示装置夹持装置已略去探究Na2SO3溶液是否变质量取60mL标签上注明为1.0mol•L﹣1的Na2SO溶液放入A装置中通过测量生成的SO2质量的方法来判断其是否变质． ①D装置的作用是分液漏斗中应加入足量的填字母 a．浓硝酸b．65%硫酸 c．浓盐酸d．20%硫酸 ②若实验前后测得C装置增重3.2g则Na2SO3变质的百分率是． 3丙同学认为若只是确定Na2SO3是否变质乙的方案太复杂了他认为只需要试管胶头滴管盐酸及氯化钡溶液就可以达到目的不考虑对环境的影响请你发表自己的看法若不同意请说明理由若同意请写出主要操作现象及结论．
accountfor.
10分请你修改下面短文共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加在缺词处加一个漏子符号∧并在其下面写出该加的词. 删除把多余的词用\划掉. 修改在错的词下画一横线并在该词下面写出修改后的词. 注意1.每处错误及其修改均仅限一词 2.只允许修改10处多者从第11处起不计分. Peopleusedtocommunicatewitheachotherthroughlettersandpublicphones.SonowadaystheyusemobilephonesandtheInternetinsteadof.Thischangeincommunicationhavegoodeffectsonourworksandlife.ComparingwithlettersandpublicphonesmobilephonesandtheInternetarefastandmuchmoreconvenient.Ifyoumissedyourgrandmotheryoujusttakeoutyourphoneandsayhellotohim.Andshewillbehappytohearyourvoice.Ifyouwanttoplaceorderwithaforeigncompanyyoucane﹣mailthemessage.It'llbeminutesafteryougettheirreply.
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1分Nodon'ttellthemanything.Anyhowtheydidn'ttrustme.Theydon't84anexplanation.
假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的作文.文中共有10处错误每句最多有一处每处错误仅涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号︿并在横线上写出所加的词. 删除把多余的词用斜线\划掉.在该行右边横线上写出该词并也用斜线划掉 修改在错的词下划一横线在该行右边横线上写出改正后的词. IwastakingatraintoLondon'sVictoriaStation.Ihadnoticedthatthecarriagewasnoiseandfilledwithpeople. Beforelongatraininspectorcomestocheckourtickets.Apassengerrealizedhecouldn'tfindhisticketbutbecamequiteupset.Theneveryoneinthecarriagebegansearchingtheticketwhichwaseventuallyfoundunderaseatseveralrowsfromhisowner.Thepersonwhofoundaticketsmiledwithpleasureathissuccess. Nooneinthecarriagehadpreviousspokentoorevennoticedtheticket﹣ownerbefore.Yettheyhadsoquicklyofferedthestrangerstheirhelp.Ifwecouldshowconcerntoothersonneedtheworldwouldbeabetterplacetolivein.
下列有关离子方程式正确的是
6分AlongtheriverbanksoftheAmazonandtheOrinocotherelivesabirdthatswimsbeforeitcanflyflieslikeafatchickeneatsgreenleavehasthestomachofacowandhasclawsonitswingswhenyoung.Theybuildtheirhomesabout4.6mabovetheriveranimportantfeatureforthesafetyoftheyoung.Itiscalledthehoatzin. Inappearancethebirdsofbothsexeslookverymuchalikewithbrownonthebackandcreamandredontheunderside.Theheadissmallwithalargesetoffeathersonthetopbrightredeyesandblueskin.Itsnearestrelativesarethecommonbirdscuckoos.Itsmoststrikingfeaturethoughisonlyfoundintheyoung. Babyhoatzinshaveaclawontheleadingedgeofeachwingandanotherattheendofeachwingtip.Usingthesefourclawstogetherwiththebeak喙theycanclimbaboutinthebusheslookingverymuchlikeprimitivebirdsmusthavedone.Whentheyounghoatzinshavelearnedtoflytheylosetheirclaws. DuringthedriermonthsbetweenDecemberandMarchhoatzinsflyabouttheforestingroupsof20to30birdsbutinAprilwhentherainyseasonbeginstheycollecttogetherinsmallerlivingunitsoftwotosevenbirdsforproducingpurposes. 21.Whatisthetextmainlyabout? A.Hoatzinsindryandrainyseasons. B.Therelativesandenemiesofhoatzins. C.PrimitivebirdsandhoatzinsoftheAmazon. D.Theappearanceandlivinghabitsofhoatzins. 22.Younghoatzinsaredifferentfromtheirparentsinthat. A.theylooklikeyoungcuckoos B.theyhaveclawsonthewings C.theyeatalotlikeacow D.theyliveonriverbanks 23.Whatcanweinferaboutprimitivebirdsfromthetext? A.Theyhadclawstohelpthemclimb. B.Theycouldflylongdistances. C.Theyhadfourwingslikehoatzins. D.Theyhadaheadwithlongfeathersonthetop. 24.Whydohoatzinscollecttogetherinsmallergroupswhentherainyseasoncomes? A.Tofindmorefood. B.Toprotectthemselvesbetter. C.Tokeepthemselveswarm. D.Toproducetheiryoung.
下列有关化学用语使用正确的是
1分指出下列句子属于哪种基本句型.回答可写汉字 IsawMrWanggetonthebus..
10分Michael'sbirthdaywascomingsoonsoheaskedhisdadforabicyclesothathewouldn'thavetowalktoschoolanymore.36Michaelgotabookinsteadbuthedidnotcomplain抱怨. OnebrightandsunnydaywhileMichaelwaswalkingpastabookstoreonhiswaytoschoolhesawabigboyonabike.Thebikewastoosmallfortheboy.37TheboywasastudentinMichael'sschool.Michaelrecognizedhim.Theboy'snamewasWilliam.Hislegseemedtohavebroken.MichaelpickedupWilliam'sbikewhichwasnotdamagedandrodetothenearbyhospitaltogethelp38.MichaelrodeWilliam'sbiketoschoolsohewouldnotbelateforclass. AfterschoolMichaelquicklyrodethebicycletoWilliam'shousewithabookforhim.39Buthehadtoputsomemedicineonhislegandstayinbedforsometime. ToMichael'ssurpriseWilliamwasgettinganewbikeforhisbirthdayintwomonthssoheletMichaelhavehisoldbike.Michaelwasoverjoyed喜出望外. 40MichaelvisitedWilliameverydayuntilWilliams'slegwasbetter. A.LuckilyWilliamwasnotseriouslyhurt. B.Michaelfounditinterestingandcouldn'thelplaughing. C.FromthenonMichaelandWilliambecamegoodfriends D.WilliamgavehisnewbiketoMichaeltoshowhisthanks. E.HoweverMichael'sdadhadlosthisjobanddidnothavemuchmoney. F.Astheboywasturningaroundacornerthebikecrashedintoatree. G.Afewminuteslateranambulance救护车cameandtookWilliamtothehospital. 36. 37. 38. 39. 40.
cutdown.
7.5分Howtomanageyouremailinbox36Weloveitandwehateit.Weneeditandwewantitbuttoooftenthepricewepayiscompleteemailoverload.Ascertainasthesunwillriseourinboxeswillbefullbymid﹣morning. Honestlywe'vedoneittoourselves.Wedependtoomuchonittocommunicateandasaresulthavemadeourselvespayattentiontoeveryoneofthem.Thisisterrible.37Everytimeanemailinterruptsyouitcoststimemoneyandbrainpower. Herearesomeofmybesttipstomanageemails 38Youcan'tgetintoworkifyoucheckemailseverytenminutes.Insteadyoushouldsetcertaintimestocheckyourinboxlikethetopofeveryhourorevery90minutes.Setatimeronyourphoneandsticktoit. Scanyourinbox.39Atthesametimedeleteeverythingthatisunnecessaryandanswertimelyrequestsfirst. 40Insteadofcreatinganemailtryspeakingwiththepersonyouwanttocommunicatewith.Oftenafive﹣minuteconversationonthelineismuchbetterthananemail. A.Emailisbecomingmoreandmoreimportantinourlives. B.Setaschedule. C.Emaiiisourfriendandtheenemy. D.Lookingthroughtheemailsquicklycansaveyourtime. E.Becauseemaiicaninterruptourworkandlife. F.Useaphone. G.Talktotheperson. 36. 37. 38. 39. 40.
prevent….From.
6分FiveyearsagoDavidSmithworeanexpensivesuittoworkeveryday.Iwasaclothesaddict迷hejokes.IusedtocarryafreshsuittoworkwithmesoIcouldchangeifmyclothesgotwrinkled皱的.TodayDavidwearscasualclothes﹣khakipantsandasportsshirt﹣totheoffice.Hehardlyeverwearsanecktie.I'mworkingharderthaneverDavidsaysandIneedtofeelcomfortable.Moreandmorecompaniesareallowingtheirofficeworkerstowearcasualclothestowork.IntheUnitedStatesthechangesfromformaltocasualofficewearhavebeenslow.Intheearly1990smanycompaniesallowedtheirworkerstowearcasualclothesonFridaybutonlyonFriday.Thisbecameknownasdress﹣downFridayorcasualFriday.Whatstartedoutasanextraone﹣day﹣a﹣weekbenefitforworkershasreallybecomeaneverydaythingsaidbusinessadviserMaislyJones. Whyhavesomanycompaniesstartedallowingtheirworkerstowearcasualclothes?Onereasonisthatitseasierforacompanytoattractnewworkersifithasacasualdresscode.Alotofyoungpeopledon'twanttodressupforworksaystheownerofasoftwarecompanysoit'shardtohirepeopleifyouhaveaconservativedresscode.Anotherreasonisthatpeopleseemhappierandmoreproductivewhentheyarewearingcomfortableclothes.InastudymadebyLeviStraussandCompany85percentofemployerssaidthatcasualdresshasapositiveeffectonwork.Supportersofcasualofficewearalsosaythatacasualdresscodehelpsthemsavemoney.Suitsareexpensiveifyouhavetowearoneeverydayonepersonsaid.Forthesameamountofmoneyyoucanbuyalotmorecasualclothes. 28.DavidSmithreferstohimselfashavingbeenaclothesaddictbecause. A.heoftenworekhakipantsandasportsshirt B.hecouldn'tstandacleanappearance C.hewantedhisclothestolooktidyandcleanallthetime D.hedidn'twanttospendmuchmoneyonclothes 29.Thereasonwhycompaniesallowtheirworkerstowearcasualclothesareasfollowsexceptthat. A.manyworkersdon'tlikeaconservativedresscode B.comfortableclothesmakeworkersmoreproductive C.acasualclothescodeiswelcomedbyyoungworkers D.alltheemployersintheU.S.areforcasualofficewear 30.Accordingtothispassagedress﹣downFridaymeansthat. A.onFridaycompanieswillgivetheirworkersanextrabenefit B.onFridaydress﹣downhasbecomeaneverydayphenomenon C.onFridaycompaniesallowtheirworkerstowearcasualclothesasafavor D.onFridaymanyworkerswanttowearcasualclothestoimpresspeople 31.Whichofthefollowingclothesiscasualwear? A.Khakipants. B.Suits. C.Neckties. D.Tuxedos.
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