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（2017年·北京朝阳一模理科）△ABC中，，BC＝3，，则∠C＝ ．
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高三下学期数学《2017年北京市朝阳区高考数学一模试卷（理科）》真题及答案
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2017年·哈三中一模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∧并在该词下面写出修改后的词.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1处起不计分.DearPaulIreallycan'tthankyouverymuchforyourinvitation.IdowanttoacceptthemandtakethisopportunitytointroducetraditionalChinesepaintingstoforeignfriendsbutI'msorrytoinformyouthatIcan't.ThereasonisbecauseIambusypreparingmyselfforthecomingCollegeEntranceExamination.AsfortheintroductionspeechIstronglyrecommendmyfriendAnnathatisthemostsuitablechoicetotakemyplaceonnextSunday.ShebeguntolearnpaintingsatanearlyageandhasgoodknowledgeoftraditionalChinesepaintings.HoweverheractivepersonalityandperfectspokenEnglishwillhelpmakingyouractivityasuccess.Sorryagainforanyinconveniencecausedbymyabsenceandallthebestwishtoyou.SincerelyyoursLiMing
2018年·大庆二模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处错误每句中最多有两处.错误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处起不计分.OnmywayhomefromschoollastFridayIsawalittledogonthesidewalklookinghopelessly.Iwashelditfirmlyupinmyarmstookithomeandfeedsomemilktoit.Howevermymomwasunwillingtokeepthemsayingtherewasenoughpetsforustwocatsandadog.Ibeggedmymomnottoletitgo.Finallyweagreedthatitwouldbedecidingbymydadwhomdidn'treturnhomefromwork.Justthenthegirlandherfatherdrovenearsearchingfortheirlostpets.WhentheythankedustakingcareofthedogIfeltveryhappy.
2017年·哈师大三模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短文.短文中共有10处错误每句中最多有两处.错误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∧并在此符号下面写出该加的词.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处起不计分.DearMr.GreenIamveryexcitingtolearnthatwearegoingtostartamagazinetogether.Thatsoundsgreat!ButIdefinitelyagreewithyouonthat.Someofthecolumnswhatyoumentionedinyourlastletterarereallymycupoftea.'CultureExpress'givesyouabetterunderstandingoftheworld.Sincepeoplefromdifferentpartsoftheworldhaddifferentvaluesit'snecessarytolearnofeachother.Thiswillofferwonderfulchance.Apartfromthat'BlurtOut'isprettygoodforusChinesestudentstolearnEnglishidiomsandimproveoralEnglish.Lastbutnotleast'Entertainment'issocool!Thepopularsingersactorandcelebritiesaresocatchyandattractivethatweteenagersabsolutelycan'tmissit!WellIcan'tlistmost.Ireallycan'twaittobereadthatmagazine!YoursfaithfullyLiHua
2018年·哈三中二模假定英语课上老师要求同桌交换修改作文请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处起不计分. Iamthesharedbike.I'dliketobeonthestreettoserveforpeople.Theycanridemejustviaamobileapp.Buthorriblethingshappenafewdaysago.Severalpeoplestolesomeofuswithpayingtheirbillsontheappbuttreatedusbadly.Theybrokemysaddleandeventhrewmyfriendseverywhere.Wefeltangryforwhichthosebadguyshaddone.Thankstosomekindlypeoplewereceivedcarefultreatment.Nowyouhelpaswellasthewholesociety'sattentioniswhatweneedmost.Wearedesignedtohelppeoplewhoarestucktheheavytraffic.Weareneithertoynorprivatevehicles.Pleaseobeythebasicrules.
2017年·哈六中三模假定英语课上英语老师要求同桌之间互相修改作文请你修改你同桌的以下作文. 文中共有10处语言错误每句中最多有两处.错误涉及一个单词的增加删除或修改. 删除把多余的词用斜线\划掉. 增加在缺词处加一个漏字符号∧并在该词下面写出该加的词. 修改在错的词下划一横线在该词下面写出修改后的词. 注意1每处错误及修改均仅限一词. 2只允许修改10处多者从11处起不计分. MyfavoriteproverbisAfriendinneedisafriendindeed.Itmeanthattruefriendsalwayscometoyouwhenyou'reintrouble.Lasttermmyfathermetwithatrafficaccidentbuthisrightleggotinjuredseriously.ConsequentlyhereceivedtheoperationandIhadtolookafterhiminthehospital.LearnedaboutthisLiLeiwasofferedtotakecareofmyfatherwithouthesitation.Healsohelpedmemakeupformymissinglessons.ThanktohishelpandinspirationIwentthroughthedifficultyperiodandregainedconfidence.Howeveratruefriendalwayssparesnoefforthelpyouwhenyouareintrouble.Weallshouldtrytomakesogoodfriends.
2017年·双鸭山宝清一中二模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.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\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.Iwasalwaysbusywithmystudiesandseldomhelpedmyparentswithhouseworks.FeelingquitesorryforthatandIbegantothinkabouthowtodotohelpthem.LastSundaywhenmyparentswentoutshoppingIsuddenlygotideawhynotgivetheroomsathoroughlycleaning?FirstIcollectedallthebooksnewspapersandanotherthingsintheroomsandthenputitinplace.AfterthatIsweptandmopthefloors.Atthisverymomentmyparentscamebackandwerequitesurprisingtoseealltheroomstidy.MymothergavemeahugandIcouldseesatisfactioninhiseyes.
2018年·哈三中三模假定英语课上老师要求同桌交换修改作文请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处起不计分.Ican'tswimsoIhaveastrongfearofthewater.LookbackatmychildhoodIthinkthatthreereasonsmightexplainfear.FirstlyIwasnotallowedtogonearthewaterwhenIwasachildasmymotherhadanunreasonablefearofthewater.ThereforeIwastaughttoseetoitassomethingdanger.SecondlymyeyesgonebadwhenIwasfive.IfItookoffmyglassinthewaterIcouldn'tseesomething.Andthisaddedupmyfear.What'sbetterasachildIoncesawaneighbordrowned溺水.SincethenIhavebeenmorefrightened.
2016年·哈六中三模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∧并在该词下面写出该加的词. 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处起不计分. Harmonyisveryimportanttooursociety.Allofusarelookingforwardtoliveinaharmonious society.AsstudentsIthoughtweshouldfirstkeepourdormitorieswithharmony.Foronethingitcan createagoodenvironmentformystudiesandlife.Forotheritcanhelpusgrowhealthily.Unfortunatelytherearesomewaytomakeourdormitoriesharmonious.Firstlyweshouldlearntounderstandeachotherandsolveeverythinginthepeace.Secondlyweshouldtrytogetridourownbadhabits.Lastlyweshouldshareorgetonwitheachother.
2016年·大庆实验模拟一短文中共有10处语言错误每句话最多两处错误.错误涉及一个单词的增加删除或修改. 增加:在此处加一个漏字符号∧并在其下面写出增加的词 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其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处多者从十一处起不计分. Inacoupleofweekwewillsaygoodbyetoourschool.Howthetimeflies!IwillneverforgetthepastthreeyearsthatIhaveenjoyedawonderfullyjourneywithallofmyteachersandclassmates.Tomakethejourneyfruitfulourteachersdevotedhistimeandenergytous.Thankssomuchtoyourhelpandguidancemydearteachers!Ireallyappreciatedit. Beforelongwe'llstartanewjourneyandtheremaybealotofdifficultiesindoeverythinginthefuture.Iknowtherearenoendtothethingsthatwecanaccomplishandtomorrowisthebeginningofthehardestpartofourlife.Mayyouhappyandsuccessfulallthetimeinyournewlife!
2016年·大庆实验模拟四短文中共有10处语言错误每句话最多两处错误.错误涉及一个单词的增加删除或修改. 增加:在此处加一个漏字符号∧并在其下面写出增加的词 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其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处多者从十一处起不计分. Whatmakessmartlearners?Smartlearnersthinkeveryminuteimportantlyandmakefulluseofthem.Inclasstheyalwaysplaytheactiveroleandlistentoteacherscarefullyinordernotmissanykeyinformation.Afterclasstheykeepthehabitofreviewtheirlessonsanddoingtheirhomeworkcareful.Besidessmartlearnerslikediscussingaboutstudyproblemswithbothteachersandfriendssuchthattheycansolvethem.Ihopedallofuswillfindasuitablelearningmethodandhavealotoffunslearning.
2016年·哈师大三模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处错误每句中最多有两处每处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. 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. Asiswellknownthatdoingexercisecanhelppeopletoloseweightsandhaveahealthylife.Recentlyanewstudyhadfoundanothergoodreasonfordoingexercise﹣﹣﹣itcanhelptoimprovestudents'grades.Accordingtothenewstudycomparingwithstudentsinpoorphysicalconditionstudentswhomareingoodphysicalconditionaremorelikelytogethighgradesintests.About2000studentstook apartinthestudy.Ifpeoplewanttheirbrainsbeingoodconditionweshouldhaveahealthybodysaidanexpert.Parentsshouldtaketheresultsofthisstudymoreserious.Furtherstudiesareneededtoworkoutwhyahealthybodyplayssuchanimportantpartonachievinggoodstudygrades.
2016年·哈六中模拟三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处起不计分. Haveyoueverhadaheadacheduringatest?Haveyoueverbeentooworriedaboutsomethingthatyouhaveaheadacheorevencan'tsleepatnight?Ifsothenyouknowthatstressis. Notallstressisbadforyou.Somekindsofstresscanhelpyougetthingsdobetterlikewhenyouarerunningtowardsthefinishinglineorwhenyouarebeingaskedtogiveaspeechtoyourclass.Stresssometimescanhelppushyoutomakefullpreparationforatest.Howevertoomuchstresscanresultinangerdepressionandotherrelatedproblemswhichweneedtotakeserious. Therearemanythingsinourlifewhatmightcausestress﹣﹣﹣﹣﹣﹣havingtoomuchhomeworktakingadifficulttestandhavingeconomicproblems. It'simpossibletoliveinalifecompletelyfreeofstresssoyoushouldlearntodealwithstress.Thebestwayreducestressistohaveabalancelife.Ifyougetenoughsleepeatproperlytakemoreexerciseandhaveenoughfuntimeyou'llprobablyfeellessstressed.
比较某一癌症患者体内的癌细胞造血干细胞和神经细胞关于这三种细胞的叙述下列有几项正确①细胞核中DNA含量始终相同 ②都能在细胞核中进行转录和翻译③具有长短不一的细胞周期 ④核基因的遗传信息是相同的A．0项 B．1项 C．2项 D．3项
2018年·齐齐哈尔一模假定英语课上老师要求同学们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.错误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/\并在其下面写上该加的词. 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上修改后的词. 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. LastSundayLiLinoneofmyclassmatesandIgotoabookstore.Atacounterwenoticedthattheforeignerwastalkingtoaclerkbuttheclerkdidn'tunderstandhowtheforeignersaid.SowewentuptohimandwasaskedifheneededhelpinEnglish.Afterknowingwhatherealwantedwetookhimtothecounterwhichhewaslooking.HewasinterestinginChinesefolkmusicverymuch.Wegavehimsomeadvicesonwhattochoose.Theforeignerpickedsomemusictapeswithyourhelp.Hegavehissincerethankstousandleftsatisfiedandhappily.
2016年·大庆一中三模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:在缺词处加一个漏词符号∧并在此符号下面写出该加的词. 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处起不计分. Iama18﹣year﹣oldmiddleschoolstudent.Ihavebeenbusyinmystudyandseldomhelpmyparentswiththehousework.FeltquitesorryforthatIbegintothinkaboutwhattodotohelp. LastSundaywhenmyparentswentoutshoppingIsuddenlygotanidea:whygivetheroomsathoroughlycleaning?FirstlyIcollectedallthebooksnewspapersandotherthingsscatteredintheroomsandputitinplace.ThenIwipedthedustoffallthefurnitures.AfterthatIsweepandmoppedthefloors. Atthisverymomentmyparentsreturnedbackandwerequitesurprisedtoseealltheroomstidyandfloorsshining.MymothergavemeahugandIcouldseesatisfactioninhereyes.TiredalthoughIwasIneverfeltsohappy.
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