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设函数f（x）＝2a（sinx﹣1）﹣cos2x的最小值为﹣，则实数a＝
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高三下学期数学《》真题及答案
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2分由于事先没有消除一个重大的误解双方在即将到来的贸易会谈中达成协议的可能性不大. amajormisunderstandingneithersideanagreementinthecomingtradetalks.
1分TheschooloffersusvactivitiesforustochoosefromtoourownInterestsofwhichIlikeplayingchessbest.
10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.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. 修改在错的词下面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. DearPeter ThanksforyourfocusinmysharingmomentsonmyWechat.KnowthatyouarecuriousabouthowwecelebrateChineseValentine'sDayI'mwritingtotellyouofsomethingaboutit. ChineseValentine'sDaywhichfallonthe7thdayofthe7thlunarmonthisnowcelebratedinmanyplacearoundChina.Onthatdaycouplesgettogetherforthebigmealexchanginggiftslikeflowerschocolatesandgreetingcards.Besidesmanyyoungpeoplechoosethedaygetmarried.Itisactualafestivalfornotonlyloversorcouplesandalsofamilymemberstoshowlovetoeachother. CouldyoutellmethecelebrateofValentine'sDayinyourcountry Lookingforwardtohearingfromyou. Yours LiHua
设函数fx＝|x﹣1|+|x+a|a∈R． 1若不等式fx≥6的解集为﹣∞﹣4]∪[b+∞b＞﹣4求ab的值 2若fx≥a|x|对任意x∈R恒成立求a的取值范围．
6分 SummerCamps Makeyoursummermagicalwithaone﹣of﹣a﹣kindsummercampexperience! Half﹣dayweek﹣longcampsareheldfrom9am﹣12pmor1pm﹣4pm. Dailysnackswillbeprovidedandevenbecomepartofthehands﹣onfun! Session1﹣﹣﹣OceanCommotion暴动 Setsailforfunandadventureonthedeepbluesea!CampersexploreunchartedlandatTheMagicHouseanddiscoversomethingfishyastheycomeintotheexcitingworldofseacreatures. June6﹣10 June13﹣17 June20﹣24 Session2﹣﹣﹣SuperkidsExploreEarth Campersbecomesuperheroestotheearthastheylearnabouttheenvironmentanddiscoverhowtousetheirsuperpowerstoprotectit!Duringthisaction﹣packedweekcamperswillexploretheearthfromtheskytotheseaandparticipateinfunearth﹣friendlyactivitiessuchasturningtrashintotreasure. June27﹣July1 July11﹣15 July18﹣22 Session3﹣﹣﹣OnceUponATime Atthisuniquefairytale﹣themedcampcampershaveamagicalmake﹣believeadventurethroughthepagesofsomeoftheirfavoritestorybooks.Campersexperiencegaint﹣sizedfunastheyusetheirimaginationstotraveltoplacesfoundonlyinfairytales. July25﹣29 August1﹣5 August8﹣12amsessionsonly Allcampersmustberegisteredinadvance. 1Whatdoestheunderlinedwordone﹣of﹣a﹣kindinParagraph1mean A.Long B.Unique C.Official D.Moving 2WhatisthemainpurposeofSession2 A.Toencouragereading. B.Toinspireimagination. C.Todevelopthespiritofadventure. D.Toraiseenvironmentalawareness. 3WhatdocampersprobablydoduringSession3 A.Readfairystories. B.Travelthecountry. C.Searchfortreasure. D.Learnaboutanimals.
30分ThestagelightsdimmedandItookaquicklookfrombehindtheheavyblackcurtainsintothe1.BlindedbythelightsIquickly2.Itseemsthatagreatnumberofeyeswerelookingatme.Itookadeep3asthemusicofmydancebegantoplay.Ienteredthestageandbeganmy4thegraduationtestoftheclassicalIndiandance. AfteradecadeoflearningthisartformIhad5beenconsideredreadytotakeonthemostdifficultact.Thetestisthemostimportanteventinadancer'slifeasitpays6toallthefactorsinone'slifethat7thedanceformone'scultureandfamily. Theperformanceisundertakenonlybythemost8anddeterminedstudents.Itisadifficultprocessthatrequiresmuchcommitment.FormorethansixmonthsIspenttwotothreehourseveryday9thesedances.ManytimesI10myselftomyphysicalandmentalbreakingpointbutstillIwouldnotstop.Icouldnotgiveup.Therewasalwayssomuchmoretodoandsomuchmoreto11. I12alotaboutmyselfinthosetiringhours.IlearnedthatIwasfartoo13togiveupandIwastooproudtoprovemyself14afterIhadsetanunrealisticgoal.Evenwithphysicalpainandmental15Iforcedmyselftomeetmy16.EvenwhenIwasattheendofmy17therewasalwayssomethingdrivingmeonforcingmenottogiveup. FortunatelyImadeit.WhatIhaddone18thesuccess.ItwasinthosehoursthatIlearnedwhatadancer19is.ThosetimewasevidencethatIcould20somethingIsetouttodo. 1A.carpenter B.audience C.actress D.Diver 2A.pulledback B.setoff C.reachedout D.brokeaway 3A.sleep B.thought C.breath D.sorrow 4A.career B.attempt C.response D.performance 5A.easily B.eventually C.occasionally D.directly 6A.debt B.visit C.interest D.respect 7A.develop B.rescue C.introduce D.convince 8A.focused B.beautiful C.intelligent D.considerate 9A.recording B.practicing C.discussing D.designing 10A.applied B.addicted C.treated D.pushed 11A.forget B.design C.learn D.research 12A.regretted B.discovered C.controlled D.confused 13A.brilliant B.brave C.stubborn D.discourage 14A.wrong B.nervous C.frightened D.careless 15A.function B.action C.level D.stress 16A.budget B.expectation C.cost D.deadline 17A.limit B.purpose C.preparation D.destination 18A.increased B.deserved C.expanded D.exposed 19A.completely B.chiefly C.truly D.originally 20A.change B.supply C.explain D.achieve
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