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(1分)后来,人们开始在有充足的食物和水的地方定居下来. Later, man began to where the food and water were plentiful.
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高二下学期英语《》真题及答案
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理性认识和感性认识相互渗透
认识不断深化、扩展和向前推移
认识的根本任务是指导实践
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12分发展观是人们对经济社会发展的总的看法和根本观点处于不同时代的人们对发展的理解并不相同按时间顺序
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如图在平面直角坐标系中抛物线y＝﹣x﹣h2+2h表示常数且h＞0的顶点为M函数图象与x轴负半轴交于点A将此抛物线绕坐标原点O旋转180°得到的抛物线顶点为N函数图象与x轴正半轴交于点B．则四边形MANB的面积表示为用含h的代数式表示
从数﹣2﹣113中任取两个其和的绝对值为k的概率记作Pk如P3是任取两个数其和的绝对值为3的概率 1用画树状图或列表法列出所有等可能情况 2求P1．
如图在△ABC中∠C＝90°按以下步骤作图①以点A为圆心小于AC的长为半径作圆弧分别交ABAC于点EF②分别以点EF为圆心大于EF的长为半径作圆弧两弧相交于点G③作射线AG交BC边于点D．若CD＝3AB＝10则△ABD的面积是．
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如图是一辆小汽车与墙平行停放的平面示意图汽车靠墙一侧OB与墙MN平行且距离为0.8米．已知小汽车车门宽AO为1.2米当车门打开角度∠AOB为40°时车门是否会碰到墙请说明理由．参考数据sin40°≈0.64cos40°≈0.77tan40°≈0.84
对于二次函数给出如下定义在平面直角坐标系xOy中二次函数y＝ax2+bx+cabc为常数且a≠0的图象顶点为P不与坐标原点重合以OP为边构造正方形OPMN则称正方形OPMN为二次函数y＝ax2+bx+c的关联正方形称二次函数y＝ax2+bx+c为正方形OPMN的关联二次函数．若关联正方形的顶点落在二次函数图象上则称此点为伴随点． 1如图直接写出二次函数y＝x+12﹣2的关联正方形OPMN顶点N的坐标并验证点N是否为伴随点填“是“或“否“ 2当二次函数y＝﹣x2+4x+c的关联正方形OPMN的顶点P与N位于x轴的两侧时请解答下列问题 ①若关联正方形OPMN的顶点MN在x轴的异侧时求c的取值范围 ②当关联正方形OPMN的顶点M是伴随点时求关联函数y＝﹣x2+4x+c的解析式 ③关联正方形OPMN被二次函数y＝﹣x2+4x+c图象的对称轴分成的两部分的面积分别为S1与S2若S1≤S2请直接写出c的取值范围．
不等式的解集在数轴上表示为
分解因式2a2﹣4ab+2b2＝．
10分假定英语课上老师要求回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. DuringtheSpringFestivalIwatchasci﹣fimovieTheWanderingEarthwithmyfriends.ThemoviedirectbyGuoFanisverypopularinChina.Itissetin2075wheretheearthisnolongersafetolive.Unlikemostwesternmoviestheheroesdonotgiveuptheearth.Insteadtheychoosetosavetheearthbysendittoanothersol﹣likesystem.IwasdeepimpressedbythethreegenerationofaChinesefamily.Theydevotethemtothemission.ThemovieconveyslotsofChinesevaluesbutIthinkitisquiteworthseeingit.
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8分Weallknowthefeeling﹣youwanttocheckwhatsomeoneyoucareabouthasbeenuptoonsocialmediaandsuddenlyyoufindyoucan'thavetheaccess.That'swhathalfofChineseparentshavetodealwithwhentheytrytobrowsetheirchildren'sWeChatMomentsalsoknownasFriends'CircleassuggestedbyarecentsurveyreleasedbyTencenttheChineseInternetgiant. Accordingtoareportabout52percentofWeChatusersaged18to29blocktheirparentsonMoment.Asforthereasonabout62percentofthemsaidthatparentsaresensitiveabouteverythingXieYunaChongqing﹣based26﹣year﹣oldtoldthenewspaperthatwhileshedidn'tblockherparentsentirelytheywereinaspecificgrouptowhichsheonlysharespositiveposts.Idon'twantmyparentstoseeminorsetbacksinmylifeshesaidaddingthatonceherparentssawaMomentspictureofherhandgettingslightlyburnedwhilecookingandtheytravelledallthewaytohercitytomakesureshewasallright. Thereportalsofoundthatmorethan49percentofChineseparentsuseWeChatasamainwaytocommunicatewiththeirchildren.Roughly36percentoftheparentswhotookthesurveysaidtheycheckedeverypostmadebytheirchildren.Whenaskedhowtheywouldreacttobeingblockedsomeparentssaidtheywouldstartaconversationwiththeirchildrentofindoutthereasonwhileotherssaidtheywouldn'tcare.Inanycaseitissuggestedthatchildrenshouldthinktwicebeforeblockingtheirparents'onMomentsbecausesharingandcommunicatingmaybeagoodwayformutualunderstanding. 1WhatdoesthewordbrowseinParagraph1mostprobablymeans A.Lookthrough. B.Setup. C.Turndown. D.Watchover. 2WhatcanweinferfromParagraph2 A.XieYunblockedherparentsentirelyonWechat. B.XieYunonlysharespositivepostsonWechatMoments. C.XieYun'sparentswereconcernedabouttheirdaughterverymuch. D.XieYunwouldliketoshareeverythingwithherparentsonWechatMoments. 3WhichofthefollowingaboutthereportisTRUE A.About52percentofWeChatusersblocktheirparentsonWechatMoments. B.Lessthanhalfofthechildrensaidtheirparentsaresensitiveabouteverything. C.Morethanonethirdoftheparentssurveyedcheckedeverypostoftheirchildren. D.NearlyalltheChineseparentsuseWechatasamainwaytocommunicatewithchildren. 4What'stheauthor'sopiniontowardsblockingparentsonWechatMoments A.ItisOKbecauseparentsaresensitivetoeverything. B.ItisOKifchildren'sWechatsareaboutsomebadnews. C.Itisbadbecausechildrenshouldshowrespectfortheirparents. D.Itisbadformutualunderstandingbetweenchildrenandtheirparents.
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“锄禾日当午汗滴禾下土．谁知盘中餐粒粒皆辛苦．”这是每个同学儿时就会背诵的古诗但现实生活中同学们就餐时剩余饭菜较多浪费严重．为了让同学们珍惜粮食某学校倡导“光盘行动”为了让同学们理解这次活动的重要性校学生会在某天午餐后随机调查了部分同学用餐的剩余情况并将结果统计后绘制成了如图所示的不完整的统计图． 1这次被调查的同学共有人 2补全条形统计图 3校学生会通过数据分析估计这次被调查的所有学生一餐浪费的食物可以供50人食用一餐．据此估算该校3600名学生一餐浪费的食物可供多少人食用一餐
1.5分Accordingtomyresearchyourrestaurantdidn'tofferabalancedd.
8分NextmonthI'mtravelingtoaremoteareaofCentralAfricaandmyaimistoknowenoughLingala﹣oneofthelocallanguages﹣tohaveaconversation.Iwasn'tsurehowIwasgoingtomanagethis﹣untilIdiscoveredawaytolearnallthevocabularyI'mgoingtoneed.ThankstoMemrisetheappI'musing.Itfeelsjustlikeagame. Peopleoftenstoplearningthingsbecausetheyfeelthey'renotmakingprogressorbecauseitallfeelsliketoomuchhardworksaysEdCookeoneofthepeoplewhocreatedMemrise.We'retryingtocreateaformoflearningexperiencethatisfunandissomethingyou'dwanttodoinsteadofwatchingTV. Memrisegivesyouafewnewwordstolearnandtheseareseedswhichyouplantinyourgreenhouse.Whenyoupracticethewordsyouwateryourplants.Whentheappbelievesthatyouhavereallyrememberedaworditmovesthewordtoyourgarden.Andifyouforgettologon登录theappsendsyouemailsthatremindyoutowateryourplants. Theappusestwoprinciplesaboutlearning.Thefirstisthatpeoplerememberthingsbetterwhentheylinkthemtoapictureintheirmind.Memrisetranslateswordsintoyourownlanguagebutitalsoencouragesyoutousemems.ForexampleImemorizedmoteletheLingalawordforengineusingamemIcreated﹣Iimaginedanoldengineinamotel汽车旅馆room. Thesecondprincipleisthatweneedtostopafterstudyingwordsandthenrepeatthemagainlaterleavingtimebetweenstudysessions.Memrisehelpsyouwiththisbecauseit'sthekindofappyouonlyuseforfiveortenminutesaday. I'velearnthundredsofLingalawordswithMemrise.Iknowthiswon'tmakemeafluentspeakerbutIhopeI'llbeabletodomorethanjustsmilewhenImeetpeopleinCongo.NowIneedtogoandwatermyVocabulary! 1WhatdoesEdCookemakeanefforttodowithMemrise A.Creatememorableexperiences. B.Makeprogresswithhardwork. C.Masterlanguagesthroughgames. D.Combinestudywithentertainment. 2WhatdotheunderlinedwordswateryourplantsinParagraph3referto A.Learningnewwords. B.BeingaMemriseuser. C.Loggingontotheapp. D.Takingcareofyourgarden. 3HowdoesMemrisework A.Bylinkingdifferentmemstogether. B.Byputtingknowledgeintopractice. C.Byofferinghumantranslationservices. D.Byapplyinganassociativememoryapproach. 4Whatistheauthor'sattitudetowardsMemrise A.Positive. B.Doubtful. C.Uncaring. D.Disapproving.
15分Dinosaursalmostdiedout66millionyearsagoexceptonegrouptheaviandinosaurs1mostofusknowasbirds.WhywerebirdstheonlydinosaursthatsurvivedTherearethreemainideas. Firstlymostbirdsaresmall.Theonesthatsurvivedthemassextinctionofthedinosaurs2benobiggerthanducks.Smallcreaturesbreedfaster.Theywereabletoadaptmorequickly3thenewconditionsthanlargeranimalscould.Birds'smallsizealsogavethem4advantagetheydidn'tneedtoeatasmuchaslargeanimals. Asecondreasonforbirds'survivalisthefact5theyeatprettymuchanything.Birdseatalotofdifferentthingsincludingseedsfruitinsectsandevenfish.Thisispartlythankstotheirdifferentbeak6shape.Moreandmorebeakshapesappearedfromabout80millionyearsagoonwards. Athirdreasonbirdssurvivedisbecausetheycouldfly.Flyingtakes7littleenergythanwalkingorrunningtotravellongdistances.Sobirdscouldeasilyescapethebadconditionsandfindnewfoodsourcesandsaferplaces8live. Todaybirdsarea9hugesuccessfulgroup.Thereareatleast11000differentspecies.Birds10findeverywhereontheplanet.
3分meIhadbeenpayingattentiontowhatwasgoingwrongwithmyliferatherthanwhatwasright.突然想到……用形式主语.
将一块直角三角板ABC按如图方式放置其中∠ABC＝30°AB两点分别落在直线mn上∠1＝20°添加下列哪一个条件可使直线m∥n
如图菱形ABCD的两个顶点BD在反比例函数y＝的图象上对角线AC与BD的交点刚好是坐标原点O已知点A22∠ABC＝60°则k的值是
30分Itwasn'tthatIwasembarrassedbecausemyhusbandwasoutofwork.It'sjustthatwewere1peopleanddidn'tshareour2muchwithothers.Sowhenhelosthisjobwejustactedlikenothinghadchangedandnooneseemedto3. Itdidn'ttakelongbeforemyfriendsfoundoutthatmyhusband4alotmore.WhenaskedaboutitItoldmygoodfriendandneighbourTammythe5andIsaidwewerestilllooking.Shethentoldmethatherhusbandhadalsobeenhuntingfor6allovertownbecausehiscompanywasclosingdown.Iwas7.WeconstantlydidthingstogetheryetIhadn'tfoundanysignoftheir8. Afterknowingwhattheywere9Iwantedtohelpthemeventhoughwedidn'thavemuchourselves.SoIbecamea10shopper.IlookedfordiscountofferseverywhereandwhenIfinishedmy11IwouldoffertobuythingsforTammyatthe12price.Itseemslikeourmoneygoesevenfurtherbecausewearewillingto13. Itgoestheotherwaytoo.Tammyandherhusbandhavegivenusenoughwoodto14ourhousethiswinter.Ithasbeenahuge15reducingourgasbilltoalmostnothing.Thereareother16ofhelpingeachother.IteachTammyhowtomakebreadshe17mykidswhenIgotojobinterviews…andthe18goeson. Idon'thavemuchtogivebutIcangiveofmyself.Icanhave19loveandhopeandthemoreIgivetheseawaythemoreI20. 1A.strange B.selfish C.mature D.private 2A.duties B.problems C.opinions D.plans 3A.mind B.care C.notice D.sympathize 4A.wenthunting B.visitedneighbors C.stayedhome D.dinedout 5A.difference B.truth C.result D.message 6A.jobs B.friends C.promotion D.comfort 7A.relieved B.disappointed C.confused D.shocked 8A.starving B.hesitating C.struggling D.quarreling 9A.goingthrough B.preparingfor C.lookingfor D.lookingforwardto 10A.professional B.personal C.modern D.secret 11A.housework B.project C.search D.conversation 12A.earlier B.lower C.average D.suggested 13A.shop B.bargain C.compromise D.share 14A.decorate B.support C.build D.heat 15A.help B.victory C.burden D.profit 16A.difficulties B.examples C.expenses D.traditions 17A.watches B.praises C.adopts D.raises 18A.interview B.negotiation C.list D.party 19A.curiosity B.ambition C.freedom D.kindness 20A.huntfor B.getback C.believein D.comeacross
如图1．在等边△ABC中∠BCD＝30°点Q在线段CD上运动连结QBQA将线段QA绕点Q顺时针旋转使得点A的对应点E落在射线BC上不与点B重合设∠BAQ＝α0°＜α＜60°且α≠30°． [感知]如图1当30°＜α＜60°时过点Q作QP⊥BC于点P．在Rt△QPC中∠BCD＝30°已知PC＝CQ则PE＝PC+CE＝CQ+CE易知△BQE是等腰三角形在等腰△BQE中QP⊥BE则PE＝BE． [探究]如图1当30°＜α＜60°时探究线段CEBCCQ之间的数量关系并加以证明 [拓展]如图2当0°＜α＜30°时直接写出线段CEACCQ之间的数量关系．
1.5分Theteachermadeasuggestionthatsheshoulda道歉toherdeskmateforherbadbehaviour.
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