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黑洞是爱因斯坦广义相对论预言的一种质量极大的天体，黑洞自身不发光，难以直接观测，我们可以通过恒星运动，黑洞边缘的吸积盘及喷流，乃至引力波来探测．美国在2016年6月“激光干涉引力波天文台”（LIGO...
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高三下学期物理《》真题及答案
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爱因斯坦的广义相对论预言了黑洞
黑洞是爱因斯坦的广义相对论中预言的一种特殊天体它的密度极大对周围的物质有极强的吸引力根据恩爱斯坦理论
3.填入下面一段文字横线处的语句最恰当的一项是2016年2月11日美国激光干涉引力波天文台LIGO执
②③①⑤④⑥
⑤④⑥①②③
③②⑥⑤④①
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爱因斯坦的广义相对论很神奇但并不预示着黑洞附近会发生什么
虫洞存在
时间变慢
光谱红移
空间弯曲
法国天文学家拉普拉斯提出的黑洞预言是建立在基础上
牛顿经典力学；
量子力学；
爱因斯坦的广义相对论；
狭义相对论
德国天文学家史瓦西提出黑洞的预言是建立在基础上
牛顿经典力学；
量子力学；
爱因斯坦的广义相对论；
爱因斯坦的狭义相对论
黑洞理论是根据爱因斯坦广义相对论提出的最著名预测之一世界第一个人造黑洞的制造国是
美国
日本
德国
中国
2015年是爱因斯坦的广义相对论诞生100周年．广义相对论预言了黑洞引力波水星进动光线偏折等七大天
甲乙两个黑洞绕行的线速度之比为26：39
甲乙两个黑洞绕行的向心加速度之比为39
2
：26
2
质量大的黑洞旋转半径大
若已知两黑洞的绕行周期和太阳质量，可以估算出两黑洞的距离
爱因斯坦在世界科技史上的最大贡献是
量子力学理论
相对论
量子统计理论
宇宙黑洞说
1915年爱因斯坦发表广义相对论论文论证了引力的本质是时空几何在物质影响下的弯曲1916年爱因斯坦在
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②④
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广义相对论告诉我们有黑洞
1915年爱因斯坦发表广义相对论论文论证了引力的本质是时空几何在物质影响下的弯曲1916年爱因斯坦在
①②
②④
①③
③④
黑洞是一种人们至今还没有观察到的特殊物质但科学家们根据爱因斯坦的科学理论对黑洞作出了科学的预言并对黑
意识有正确和错误之分
世界上存在着不可认识的事物
每一时期的人们对客观事物的正确认识总是有限的
意识能够正确地反映客观事物
16.在下面一段文字横线处补写恰当的语句使整段文字语意完整连贯内容贴切逻辑严密每处不超过15个字引力
学术界有一种观点认为量子论是由普朗克和爱因斯坦共同创立的这种观点是基于爱因斯坦提出了
广义相对论
狭义相对论
光电效应
量子论思想
把下列句子组成语意连贯的一段文字排序最恰当的一项是①从理论上讲黑洞是广义相对论的一个推论②他们的怀疑
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⑦④③⑤⑥①②
⑦⑤②⑥①④③
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下列关于爱因斯坦相对论的叙述不正确的一项是
爱因斯坦在相对论原理和光速不变原理的基础上，创立了狭义相对论
狭义相对论全盘否定了牛顿力学
爱因斯坦又建立了广义相对论
相对论深刻揭示了时间和空间的本质属性
100年时爱因斯坦的广义相对论预言了引力波的存在美国科学家2016年2月11日宣布他们利用两个激光引
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2016年·银川一中二模2015年是爱因斯坦的广义相对论诞生100周年．广义相对论预言了黑洞引力波
两个黑洞绕行的角速度相等
两个黑洞绕行的线速度相等
两个黑洞绕行的向心加速度相等
质量大的黑洞旋转半径大
黑洞是爱因斯坦的广义相对论中预言的一种特殊天体它的密度极大对周围的物质有极强的吸引力根据恩爱斯坦理
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Ifyou'replanninganItalianvacationthereisawealthofinformationonlinethatyoucanaccessforfree.FindoutwheretogoandwhattoseewithanItalyblog. YounginRome Thisisagreatsitefortheyoungertravelers.Itscontentisprovidedbylocals.YounginRomemostlycentersonthingstodoandsee.Artexhibitionseventsandconcertstakeupmostofthefocus.ThereisalsoadailywordofthedaypostwhichwillhelpyouexpandyourItalianvocabulary. FodorsTravelBlog YoucanbenefitfromsomegreattipsfromFodorsTravelBlog.AwidevarietyofdestinationsarecoveredincludingItaly.CheckoutgreatpoststohelpyoufigureoutwhattodoandwhatnottodoinItaly.Ifyou'revisitingotherdestinationsinEuropethisisaveryhelpfulresource. ItalyBeyondtheObvious Thisisablogfortravelerswhowanttostayoffthebeatenpath.YouseemoreofthecultureofItalybykeepingclearorpopulartouristdestinations.TherearedescriptionsofWalkingandbikingsuggestions. SelectItalyBlog ThesiteoffersadviceonEuropeantravel.Therearealsopostsabouteventsandexhibitionsinthecountry.Thisisacompanyblogforatravelbusinesssoitalsooffersservices.Howeveryoudon'tneedtouseitsservicestotakeadvantageofthegreatadviceoffered. DreamtoItalyBlog ThisblogcoversnewsandcurrenteventsinItaly.YoucanfindseveraldifferentthingstodosuchastakingaclassatanItaliancookingschool.ThesitealsohasinformationonItalianrealestate房地产ifIwanttomakeyourvacationpermanent. 21.Whatisthepurposeofthispassage? A.ToencouragepeopletotourItaly. B.TogivetraveltipsforvisitingItaly. C.TointroducesomeattractionsinItaly. D.TorecommendsomeItalytravelblogs. 22.WhatdoFodorTravelBlogandSelectItalyBloghaveincommon? A.BothoffertraveladviceonEuropeantravelsincludingItaly. B.BothhaveavarietyofpostsabouteventsandexhibitionsinItaly. C.Bothhavehelpfulresourcesofferinggreattraveltipsandsevices. D.BothfocusonArtexhibitionseventsandconcertsItaly. 23.Ifyoudislikecrowdedtouristdestinationsyoumaygetusefulinformationfrom. A.DreamofItalyBlog B.YounginRome C.ItalyBeyondtheObvious D.SelectItalyBlog.
Ifyourlifefeelslikeitislackingthepowerthatyouwantandthemotivationthatyouneedsometimes61youhavetodoisshiftyourpointofview. Yourlifecanbeenhancedandyourhappiness62richwhenyou63choicetochangeyourperspective.Don't64yourfuturetochanceorwaitforthingstogetbettermysteriouslyontheirown.Youmustgointhedirectionofyourhopesandaspirations.Begintobuildyour65confidentandworkthroughproblemsratherthanavoidthem.Rememberthatpowerisnot66necessarytocontroloversituationsbutthe67abletodealwithwhatevercomesyourway. Alwaysbelievethatgoodthingsarepossibleandrememberthatmistakescanbelessonsthatleadto68discover.Takeyourfearandtransformitintotrust;learntoriseaboveanxietyanddoubt.Turnyourworryhoursintoproductivehours.Taketheenergythatyouhavewastedanddirectittowardeveryworthwhileeffortthatyoucanbeinvolvedin. Youwillseebeautifulthingshappenwhenyouallow69toexperiencethejoysoflife.Youwillfindhappinesswhenyouadoptpositivethinkingintoyourdailyroutineandmake70animportantpartofyourworld.
Theholidaysdon'thavetobehardonyourfigure.WeaskedpastwinnersofNBC'sTheBiggestLoserhowtheylosttheirweight. 1.Don'tlettheweatherstopyou. Thewinterwasfrighteningmeaway﹣IwasafraidIwouldn'tbeabletoexercise.SoI'mlearningtoplayicehockey曲棍球!Tokeepyourselfgoingfindthingsthatarefunforyou. ﹣HelenPhillipsseason7 2.Getbackupafteryoufall. Ilost214poundsonTheBiggestLoserbutfinallytheweightstartedtoreturnbecauseIstoppedmakingtheeffort.Ihadtoremember:goingtothegymisnotapunishment﹣it'ssomethingIdobecauseIcareaboutmyself. ﹣ErikChopinseason3 3.Rememberthatageisjustanumber. BeforeIwentontheshowIsatonthesofaandlivedmylifethroughtheTV.NowinadditiontoicehockeyI'vetriedrunningandI'vebecomearunner﹣andI'm50yearsold!Ifyouwanttolosetheweightaskyourself:isitthatIcan'torthatIwon't? ﹣HelenPhillips 4.Setsmallgoalsandcelebratewhenyoureachthem. Ineededgoalsdifferentthingstogoafterinaday﹣adistancethatyoucancoveroraweightgoal.WithoutthemIwasn'tcelebratingmyselfenoughandIgotreallygoodatbeatingmyselfup. ﹣AliVincent 5.Squeeze挤itin. WhenI'minthestoreI'lldolungesupanddownexercise.Inthecheckoutlineyoucoulddosquats.IusedtoworryaboutwhatpeoplethoughtofmebutIdon'tcareanymore.IknowI'mgoingtogetthelastlaugh. ﹣AliVincent 21.Whichofthefollowingpersonsadvisesustogobacktothegymoftenafterlosingweight? A.HelenPhillips B.ErikChopin C.AliVincent D.None 22.AccordingtothepassagewecaninferTheBiggestLoseristo. A.exerciseyourself B.maketheweightoff C.havefun D.playicehockey 23.AliVincentwantstoadvise. A.takingexerciseinwinterdays. B.gettingreallygoodatbeatingyourselfup. C.settingsmallgoalsandcelebratingwhenwesucceed. D.sittingonthecouchandlivingourlifethroughtheTV. 24.Thispassagemostlikelycomesfrom. A.ahealthreport B.anovelonlosingweight C.asciencemagazine D.anewspaper.
Sevenyearsagobackin2010somereportscoveredastorythattheworld'slongestrailwaytunnelwasunderconstructioninSwitzerland.Atthatpointithadalreadybeenunderconstructionforoveradecade.Ithadbeenvotedtobebuiltnearlyaquarterofacenturyago!Theideatobuilditcoulddatebacktonearly70yearsago﹣aboutasoldassomeofyourgrandparents! Yesterdayitwasfinallyready! It's35mileslongandruns7500feetbeneaththeSwissAlpsafamousmountainrangeinSwitzerland.Itevenrunsunderanoldtunnelthatwastherebefore.Ittookatotalof17yearstobuildatacostof$12billion128milliontonsofrockweredug.Twomilliontruckloadsofearthwereremoved! ThetunnelconnectsnorthernandsouthernEurope.TheopeningofthistunnelwassuchabigdealthattheGermany'sleaderChancellorAngelaMerkelFrance'spresidentFrancoisHollandeandItaly'sprimeministerMatteoRenziwerealltheretocelebrateaswasAustria'schancellorChristianKern. It'scalledtheGotthardBaseTunnel.Eventually325freightandpassengertrainswillgothroughthetunnelrelievingalotoftrafficontheroadwaysthereandmakingitamoreenvironmentallyfriendlyoption.TheGotthardBaseTunnelisawonderofengineering!Makeuswanttovisitit! 24.WhendidpeoplefirsthavetheideaofbuildingtheTunnel? A.About70yearsago. B.Halfacenturyago. C.Twentyfiveyearsago. D.Sevenyearsago. 25.WhatcanwelearnabouttheTunnel? A.Itusedtobeanoldtunnel. B.Ithasjustbeencompleted. C.ItconnectsallEuropeancountries. D.Itrunsoverarangeofmountains. 26.WhatmaybethepurposeofbuildingtheTunnel? A.Toimprovetraffic. B.Toincreaseemployment. C.Toattractdonation. D.Tostoppollution. 27.WhatcanbeinferredabouttheTunnel? A.Itwillcauseconflictsamongcountries. B.Itwillbeoflittlebenefittothelocals. C.Itmaydodamagetotheenvironment. D.Itmaybecomeatouristattraction.
下列抛物线有最高点还是最低点写出这些点的坐标抛物线y=-4x²+3x有最填高或低点该点的坐标是
已知两个正数的和是60它们的积最大是多少提示设其中的一个正数为x将它们的积表示为x的函数
HowtoSleepBetter Ifyou'rehavingtroublegettinggoodsleepthroughthenightturningwakingupmorethanonceforexamplethistextwilltellyouwhatyoucandotoensureapeacefulnight'ssleep. 1.Getonschedule.Changingyoursleepingtimebymorethananhourcanseverelydisturbyoursleepquality.36Forexampleifyounormallywakeupat6amonweekdaystogettoworkyoumightgotobedaround10pmbecausethat'swhenyoustarttofeelsleepyandit'salsoagoodtimetoensure8hoursofsleep.Ifontheweekendyousleepuntil9amyouprobablywon'tbeabletofallasleepthatnightuntilIam. 2.Bemindfulofwhatyoueatordrinkbeforebed.37Digestionslowsdownwhileasleepandafullstomachmayinterruptsleep.Similarlyyoushouldavoidgoingtobedonanemptystomachasacompletelyemptystomachmayequallydisturbyoursleepingpatterns. 3.38Exposuretolightduringthetimewhenyou'resupposedtobesleepingcandestroyyourbody'sinternalclock.Turnyourlightofforuseaverydim暗淡的nightlight.39TheyincludewindowsLEDclocksandcomputerlights. 4.Changeyoursleepingposition.Youmaythinkthatit'simpossibletocontrolwhatpositionyousleepinsinceyouaren'tfullyawareofwhatyouaredoingbutitispossibleanditcanmakeaconsiderabledifference.40 A.Trytoavoidallsourcesoflight. B.Keeptheroomasdarkaspossible. C.Makenoteofunusualcircumstances. D.Waitatleastthreehoursafterdinnerbeforegoingtosleep. E.Sleepisconsideredtobeadequateonlywhenthereisnodaytimesleepiness. F.Inotherwordssuddenchangeofsleepingtimewillaffectyourbiologicalclock. G.Ifyouwakeupinthemiddleofthenightmakeanefforttohaveacomfortableposition.
求下列函数的最大值或最小值．y=1﹣2x﹣x2．
SCIENTISTSstudyit;anincreasingnumberofself﹣helpbookstellusthewaytofindit.InfactthepursuitofhappinesshasbeencalledtheultimategoalinlifebycountlesstalksTVshowsandnewspaperandmagazinecolumns.Howeverhappinessasitwasbeforeisstillhardtofind. USpsychologistEdDienerauthorofHappiness:UnlockingtheMysteriesofPsychologicalWealthmayhavetheanswer:acombinationoflifesatisfactionandhavingmorepositivethannegativeemotions.Howeverthismaysoundstraightforwardenoughbutitstilldoesn'texplainwhatdeterminespeople'shappiness.AndasTheWashingtonPostarguedinanarticleearlierthismonthcreatingadefinitionofhappinessthatistrueforpeoplearoundtheworldcanseemasdifficultasbeinghappy.Forexamplewhoishappier:someonewhohasenoughmoneytobuyanewmobilephoneorsomeonewhohasafamilydinnerafteryearsawayfromhome? Neverthelessasmanysurveyssuggestoneofthemostimportantpartsofhappinessiswealth.TheUN'sWorldHappinessReport2015showsthatcountrieswiththehighestlevelsofhappinessaredevelopedoneswithSwitzerlandIcelandandDenmarkmakingupthetopthree.ButontheotherhandBhutanoneofthepoorestcountriesintheworldwasnamedthehappiestcountryinAsiaandtheeighthhappiestintheworldinresearchbyBusinessWeekin2012. Perhapsthebiggestproblemishowtheideaofhappinessvariesindifferentculturesandlanguages. AsTheWashingtonPostnotedthewordhappycanrefertodifferentthingsinEnglish.Itmightmeanabriefmoodyoufeelwhensomeonesurprisesyouwithagiftoryouthinkoffriendsandfamily.Oritcouldrefertosatisfactionwithyourlife.Butnotalllanguagesrefertohappinessthesameway.InDanishforexamplehappinessisoftentranslatedaslykkeatermthatcandescribeeverydaywell﹣beingthatmightcomefromanicecupofcoffeeorasliceofbreadwithcheese.InChinesethewordforhappinessisxingfuwhichisusedtodescribeagoodlifeandalifewithmeaning.Foragoodmoodhoweverkuaileisusedmoreoften. AnotherdifferenceintheperceptionofhappinessasTheWashingtonPostputitisthatWesterncountriestendtohavequiteanindividualisticviewofhumanlife.InChinaandmanyotherAsiancountriessocialrelationshipswithfamilyinparticularareoneofthemostimportantfactorsinaperson'swell﹣being. Soareyouhappy?Andwhatmakesyouhappy? 32.WhatdoeshappinessinChinesemeanaccordingtothearticle? A.Individualisticviewofhumanlife. B.Everydaywell﹣being. C.Acombinationofsatisfaction. D.Agoodlifewithmeaning. 33.HowdoChinesepeopleandpeoplefromWesterncountriesviewhappinessdifferently? A.WealthisregardedasthemostimportantsourceofhappinessinWesterncountries. B.Socialinteractionplaysamoreimportantroleinaperson'swell﹣beinginWesterncountriesthaninChina. C.Familybondsarebelievedtobecloselyconnectedtoaperson'swell﹣beinginChina. D.ChinesepeoplegetmorehappinessfromtheirpersonalachievementsthanpeoplefromWesterncountriesdo. 34.Howisthearticlemainlydeveloped? A.Bygivingexamples. B.Byanalyzingcauseandeffect. C.Byfollowingtheorderoftime. D.Byaskingandansweringquestions. 35.Whichoneistrueaccordingtothearticle? A.Itishardertofindhappinessthanever. B.Alllanguagesdon'tlookathappinessinthesameway. C.It'ssafetosaythathappinessliesinwealth. D.It'snothardtogiveauniversaldefinitionofhappinessacrosstheworld.
填写下表
TeathemosttypicalEnglishdrinkbecameestablishedinBritainbecauseoftheinfluenceofaforeignprincessCatherineofBraganzathequeenofCharlesII.AsaloverofteasinceherchildhoodinPortugalshebroughttea﹣drinkingtotheEnglishroyalcourtandsetatrendforthebeverageinthe17thcentury.ThefashionsoonspreadbeyondthecircleofthenobilitytothemiddleclassesandteabecameapopulardrinkattheLondoncoffeehouseswherepeoplemettodobusinessanddiscusseventsoftheday.ManyemployersservedacupofteatotheirworkersinthemiddleofthemorningthusinventingalastingBritishinstitutiontheteabreak.HoweverdrinkingteainsocialsettingsoutsidetheworkplacewasbeyondthemeansofthemajorityofBritishpeople.Itcamewithahighpricetagandteawastaxedaswell. Around1800theseventhDuchessofBedfordAnneMariabeganthepopularpractice ofafternoonteaaceremonytakingplaceataboutfouro'clock.Untilthenpeopledidnot usuallyeatordrinkanythingbetweenlunchanddinner.Atapproximatelythesametimethe EarlofSandwichpopularizedanewwayofeatingbread﹣inthinsliceswithsomethinglikejamorcucumbersbetweenthem.BeforelongasmallmealattheendoftheafternooninvolvingteaandsandwicheshadbecomepartoftheBritishwayoflife. Asteabecamemuchcheaperduringthe19thcenturyitspopularityspreadrightthroughallcornersoftheBritishsociety.ThusteabecameBritain'sfavoritedrink.Inworking﹣classhouseholdsitwasservedwiththemainmealofthedayeatenwhenworkersreturnedhomeafteraday'slabor.Thismealhasbecomeknownashightea.Todayteacanbedrunkatanytimeofthedayandaccountsforovertwo﹣fifthsofalldrinksconsumedinBritain﹣withtheexceptionofwater. 1Whatismainlydiscussedaboutteainthetext? A.ItsdevelopmentinBritain. B.Itstraditionalwaysofdrinking. C.Itsinfluencearoundtheworld. D.ItspopularityinEurope. 2Whatdoestheunderlinedwordsthebeverageprobablyreferto? A.Teadrinking. B.Asmallmeal. C.Awayofeatingbread. D.Achoiceofdrinks. 3WhywasteaunabletobeacceptedasacommondrinkinBritaininthe17thcentury? A.ItwasmerelyservedinLondon. B.Itwastaxedasanalcoholicdrink. C.Itwasforbiddeninbusinesssettings. D.Itwastooexpensiveformostpeople. 4Howisthetextorganized? A.Bycauseandeffect. B.Bycomparison. C.Intimeorder. D.Infrequencyorder.
你的美国朋友Rose要来中国参加汉语演讲比赛.她对比赛感到非常紧张特意发来电子邮件向你求助.请据此并结合下面的写作提示给她回一封信. 要点:1.赛前如何准备; 2.比赛中的注意事项; 3.祝她好运. DearRose Yourssincerely LiHua.
第一节短文改错 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. StudyingintheUKhavebeenagoodexperienceforme.WhenIfirstarrived.IfindlifeveryhardasIdidn'tknowanybodyhere.butIsoongottoknowotherChinesestudentattheuniversity.LaterIbecameinterestingincommunicatingwithpeoplefromvariousculturesandImadefewerfriends. Duringmystudy.Ichosetoliveinwithmyclassmatesinthedormitory.Ithinkit'sbetterthanlivinginBritishfamilybecauseIcanmeetpeoplefromdifferentcountrieseasy.Thecourseshereareexcellent.Ienjoythewaytheteachersgivelessons.WeareencouragedtothinkforyourselveswhichisquitedifferentfromthatIhaveexperiencedbefore.
用长为6m的铝合金型材做一个形状如图所示的矩形窗框窗框的高与宽各为多少时才能使它的透光面积最大最大透光面积是多少铝合金型材宽度不计
右图为某学生进行粗盐提纯实验时过滤操作的示意图．试回答1写出标号仪器的名称①②．2溶解时玻璃棒的作用是．3制作过滤器时滤纸边缘应并紧贴在漏斗内壁上中间不能留有气泡玻璃棒靠在．4过滤时玻璃棒的作用5过滤后滤液仍然浑浊可能的原因是只写一条 接下来如何操作．6蒸发滤液时用玻璃棒不断搅拌滤液的目的是等到蒸发皿中出现时停止加热利用蒸发阻的余热使滤液蒸干．移去蒸发皿时应使用的仪器是．
某实验中用试管取稀盐酸做性质实验没有告诉用量下面四位同学的操作中最符合要求的是
DearCarolyn MysisterstepandIgetalonggreat…aslongasourparentsaren'taround.Whenmymomandherdadaretheresheismeaneasilyoffendedeasilyoffensiveandit'sawful. We'vebeentalkingaboutplanningavacationforallofuswithmyyoungsontoDisneyWorldandit'salreadygottencontentious矛盾的.AverylargepartofmewantstosuggestthatwebreakthisupandjustgotoDisneywithmemysisterandmyson.ButifmyparentsgotheywillpayandIcan'treallyaffordtogoonmyown.MysistercoulddefinitelyaffordtopayforallofusbutIdon'tthinkIshouldaskforthat. Anyadvice?ThisissosoobviouslyabadideabutIdon'tknowhowtopullthisoff设法做成withoutlotsofhurtfeelings.IguessIcanjustgowithitandputupwiththeangerinexchangeforafreetriptoDisney?Ugh. ********************************************************************************** Familyvacationdisaster ThemostobviousOption1istobackoutofthetrip.Sayyou'renotcomfortablebeingpaidforandwouldliketopostponeuntilyoucansaveupforit. Option2istobemorestraightforwardwithyoursister:Idon'tknowifyou'venoticedthesamethingbutweseemtogetalongbetterwhentheparentsaren'taround.Butyouhavetobecarefulnottolaytheblameonher. Option3istogoonthetripasplannedbutwithadifferentattitudetowardyoursister.Someonewhoactsthewayyoudescribeisobviouslystressed.Canyouthinkofwhy?Canyoufindempathy感同身受;同感;共鸣? Canyouhelp?Ormaybejustcanyougetawaywhenitgetsbad? EvenifyougowithOption1or3fileaway2foranothertimetheunderlyingtensionbetweenyouthatspoilsyourtimewithyourparentsmustbeaddressed. 25.Fromthefirstletteritcanbeconcludedthatthewriterofthefirstletter. A.can'taffordtogoforatriptoDisneyalone B.isgoingtogoonavacationwithhersister C.hasgreatfunwithherparents D.willgotoDisneywithouthersister 26.FromthesecondletterwelearnthatFamilyvacationdisaster. A.shouldcancelthetripimmediatelyunlessshemakeupwithherparents B.shouldblamehersisterfornotgoingforthetrip C.shouldknowthathersisterisunderstressinfrontoftheirparents D.shouldfindempathywithherparents 27.WhatdoweknowaboutCarolyn? A.CarolynistheonewhowantstogoonatriptoDisney. B.Carolynisacolumnwriterwhohelpspeopleintrouble. C.Carolynisapersonwhoreceiveletter. D.CarolynisaworkerinDisney.
求下列函数的最大值或最小值y=100-5x²
求下列函数的最大值或最小值．y=-6x2+12x．
Andrewwasgoingforasalesjobinterview.Heknewhehadthe61littleexperiencetogetthejob.Infacthewasn'tevensurehowhe'dgottheinterview.62hedidknowwasthathewasverythankfulfortheopportunitygiventohim. Thoughtheinterview63gowellitwasimpressedonhimagainthat64comparewiththeothercandidateshedidn'thavetheabilitytogetthejob.Asheleftthebuildinghegavethereceptionist65envelope.Insidewasathank﹣younotefortheman66hadjustinterviewedhimthankinghimforhistimeandfortheopportunity. ThateveningAndrewgotacall67tellhimthathe'dgotthejob.Hisnewemployerknew68clearthatitwasn'tAndrew'squalificationsthatgothimthejobbuthisthank﹣younote.IfAndrewwasabletobethankfulatthisstagehewouldbeabletobuildpositiverelationshipswithhis69customerwhichwasexactlywhatthecompanywaslooking70.BeinggratefulwonAndrewthejob.
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. LastSundayIwenttothemarketwithmymothertobuysomefreshlyvegetables.Mymotherspentalongtimebargainingbeforeshepaidforvegetablesshehadchosen.Shewantedtogetitatthelowestpricebecauseofshethoughtshecouldsavesomemoneyinthisway.Beforecomingbackshecookedsuchmanydishesthatwecouldn'teatthemall.Sowehadtothrowsomefoodsaway.Asaresultthemoneywewastedwasmuchthanthatsavedfrombargaining.Icouldn'thelpfeelconcerned.Ithinkthebestwaytosavemoneywastostopwasting.
下列抛物线有最高点还是最低点写出这些点的坐标抛物线y=4x²-4x+1有最填高或低点该点的坐标是
第一节完形填空 Ispentlastsummervolunteeringatahospital.Itwasagiftto41somanyamazingpeopleandI'dliketoshareoneofthesemoments.OnedayIwascalledtoaroomwherean42womanwasstaying.UsuallyIhelpedwith43whowerereadytoleave.Insteadshe44togotothegiftshop.Igota45helpedherintoitandheadeddowntotheentrance. Whenwegotthereitwasn'topenyet.Aftera30﹣minute46weenteredthegiftshop.AsIpushedheraroundIcouldseethe47inherfaceasshelookedateverythinghappytobeoutofherroom.She48somewindowdecorationsandthensawchocolates. Sheaskedmetopushherinthat49andthenIhelpedher50allthedifferentchocolatearrangements.51shedecidedonthreedifferentboxes. Shetoldmetowritethenumbers12and3ontheboxes.She52thatthenursesweretakingsuchgoodcareofhersoshe53chocolatesforeachofthethreeshiftsofnurses.Aswegavethecurrentshiftofnursestheirboxofchocolatethey54offeredsometomebeforetakingsomethemselves. Therewere55allaround.Witnessingtheoldlady's56andgettingtheopportunitytospendtimewithsomeonewhogotsomuchjoyfromlifewasa57initself.Ihavesomanymorestoriesandeachpersonmadeanimpactonmylife.I've58thathealthhasawayofbringingpeopletogether.59isablessingandbeinginaplacewherehealthisso60andappreciatedisunlikeanythingelse. 41.A.introduce B.meet C.attract D.describe 42.A.elderly B.strange C.important D.famous 43.A.nurses B.kids C.patients D.parents 44.A.pretended B.wanted C.failed D.promised 45.A.car B.shoppingcart C.wheelchair D.bike 46.A.ride B.walk C.drive D.wait 47.A.relief B.anxiety C.joy D.puzzle 48.A.chose B.made C.used D.received 49.A.manner B.case C.direction D.point 50.A.preparefor B.makeup C.figureout D.1ookthrough 51.A.Suddenly B.Eventually C.Fortunately D.Actually 52.A.explained B.declared C.expected D.imagined 53.A.exchanged B.designed C.tasted D.bought 54.A.infact B.ataloss C.inturn D.atease 55.A.whispers B.smiles C.shouts D.cheers 56.A.kindness B.choice C.decision D.1oneliness 57.A.1esson B.chance C.gift D.fact 58.A.concluded B.imagined C.predicted D.1earned 59.A.Health B.Luck C.Virtue D.Praise 60.A.tested B.valued C.maintained D.promoted
Peoplewhoseemtohavealltheluckarenotusuallyblessedbyalargeamountofgoodfortune.Theysimplyhaveahealthyattitudewhichenablesthemtomakethemostofsituations.Herearesometipsforcreatingyourownluck. 1.BeGratefulForWhatYouHave. Somepeoplearealreadyluckyandtheyjustdon'knowit.36Forexampleyouhaveahappyfamilysomewonderfulfriendsaroofoveryourheadandfoodonthetable.Byacknowledgingthesethingsregularlyyoucaninstantlyfeelluckier. 2.SeetheGoodinthePast Peoplesometimescomplainabouttheirpastforholdingthemback.Theyblametheirparentsortheirschoolingfornotsettingthemupforsuccess.Buthavingadifficultlifedevelopsstrengthsandqualitiesyoumightneverhavegotifyouhadn'tbeenthroughthosetoughsituations.37 3.BeGenerous Ifyouwantpeopletogiveyouopportunitiesyouhavetoconsiderwhatyoucandoforothers.38Begenerouswithyourtimeandattentionandyou'llbesurprisedhowmanyluckyopportunitiespeoplemayofferyou. 4.BeOpentoNewthings Luckdoesn'tjusthappenuponus﹣itcomestouswhenwe'reopen.39LearningnewskillsvisitinganewplaceortryingaDewhobbyareallgreatwaysofexpandingyouropportunitiesandyourmindset. 5.TakeAction 40Takestepstowardsyourgoalsanddreamsandgreeteverychallengewithapositivemindset.Youwillfindyoucreatemoreluckineverydaylife. A.Youcannotexpecttoreceiveifyounevergive. B.Sobegratefulforthegoodthatcamefromyourpast. C.Manypeoplespendtimethinkingaboutwhattheydon'thave. D.You'llnevercreateanyluckifyousittherewaitingforittocome. E.Tryingsomethingnewisagreatwayofgettingmoreopportunities. F.Butoftensuccesscomesfromgreatdeterminationratherthangoodluck. G.Lookathowluckyyoualreadyareinsteadoffocusingonwhat'slacking.
Thetermhelicopterparentsreferstoastyleofparentswhoareoverfocusedontheirchildren. Helicopterparentsarealwaysmakingabigpushtoprovidechildrenwitheveryopportunitytosucceedfrombabystepsatage1homeworkatage8collegeapplicationatage18employmentissuesatage25tofamilyproblemsatage3040orevenolder.Theyconstantlyshadowthechildalwaysdirectinghisbehaviorallowinghimzeroalonetime. Helicopterparentingcandevelopforanumberofreasons.Worriesabouttheeconomythejobmarketandtheworldingeneralcanpushparentstowardtakingmorecontrolovertheirchild'slifeinanattempttoprotectthem.Adultswhofeltunlovedorignoredaschildrencanovercompensatewiththeirownchildren.Whenparentsseeotheroverinvolvedparentsitcancauseasimilarresponse.Theyfeelthatiftheydon'tinvolvethemselvesintheirchildren'slivestheyarebadparents. Themainproblemwithhelicopterparentingisthatitcanbackfire.TogiveanexamplethehousewhereMarylivedwithroommateswasbrokenintoandthingswerestolen.Marycalledthelandlord房东toinstallanalarmsystembutbeforeshecouldfinishthenegotiations协商hermotherrushedinanddemandedaction.Ifeltlikemymotherruinedmycommunicationwithourlandlord.Wecouldhavegottenitdoneourselves.ShewaswellintendedbutonlymademefeelannoyedanddefeatedsaysMary. Obviouslyoverparentingismotivatedwiththeideaofdoinggoodthingsbutitdoestheexactopposite.Inthelongrunparentsareactuallydamagingtheirchild'sbasicskillstodealwithmattersindependently.Itmakesthechildfeellackinginconfidencelesscompetentindealingwiththestressesoflifeontheirown.They'rewinningthebattlebutactuallylosingthewar. 29.What'sthepurposeofhelicopterparents'overparenting? A.Todosomethinggoodfortheirchildren. B.Tomaketheirchildrennotignored. C.Tohelptheirchildrenfindagoodjob. D.Togetridofthepressurefromotherparents. 30.Whatcanwelearnfromthepassage? A.Childrenwhohavehelicopterparentsliveahardlife. B.Helicopterparentingonlyhappenstoveryyoungchildren. C.Helicopterparentscanprotecttheirchildrenagainstallproblems. D.Helicopterparentsdotheirchildrengreatharminthelongrun. 31.Whatwillpossiblybediscussedintheparagraphthatfollows? A.Thebadeffectsofhelicopterparenting. B.Howwecanavoidbeinghelicopterparents. C.Differentopinionsabouthelicopterparenting. D.Thereasonsforthedevelopmentofhelicopterparents. 32.Whatistheauthor'sattitudetowardshelicopterparenting? A.Uninterested. B.Objective. C.Positive. D.Disapproving.
MymotherandIneverhadoneofthosenicedressinmatchingmother﹣daughterclothesrelationships.Intheconfuseduncertainmindofateenagerthis41toShedoesn'tcareunderstandorloveme.42Iwasquitesurethatshehadnoideawhatlovewasreallyallabout.43shewasmoppingthefloorscookingmealsandraisingfivechildrenIwaslisteningtothemusicreadingpoetryandexperiencingthe44oflove. Asthewinterofmysixteenyear45thetensionbetweenusgrew.LookingbacknowIrealizethatItookeveryopportunitytolashoutat抨击herinan46tolessenmyowninsecurity.AndthatisexactlywhatIdidwhensheunpackedthatoldgreencoatofhers.Well﹣wornand47IdirectlytoldherthatIcouldnotbelieveshewould48itforanotherseason.ShebegantosaysomethingaboutnothavingthemoneyforanewcoatbutIwasalreadysayingphraseslikeWhenIamolderIwillhaveabeautifulandrich﹣lookingcoat.Iwouldn'tbe49deadwearingaraglikethat. Christmasmorningwasalwaysan50timeinourhouseandthatyearwasnoexception.Thesoundoflaughterkidsyellingandpaperrippingfilledthelivingroom.ThoughItriedtokeepcalmIwas51toseewhatSantahadbrought.Onelargebrightlywrappedboxwithmyname52myattention.Iquicklytoreitopen.InsidewasthemostbeautifulIhadeverseen.Brownsuede绒面革大衣withawhitefurcollaritwasnicerthananythingIhad53dreamtofowning. LookingupIcaughtmymother's54.IthoughtoftheoldgreencoatandinstantlyI55howpreciousthisgiftreallywas.Mymotherknewwhatacoatlikethiswouldmeantomeandshewaswillingto56heroldcoatsothatIcouldhaveit.Hereyesgleamedwithjoyasifitwereshewhohadreceivedtheverybestgift.57thetruemeaningoflovewascleartome. IwishIcouldtellyouourrelationship58changedintoalovingandgivingoneafterthatdaybutthatonlyhappensinthemovies.Westillfoughtandfound59witheachotherbutIalways60aspecialplaceinmyheartwhereIlovedherandIknewthatshelovedme. 41.A.translated B.handed C.awarded D.brought 42.A.Really B.Actually C.Obviously D.Slightly 43.A.Although B.Once C.If D.While 44.A.excitement B.disappointment C.surprise D.satisfaction 45.A.approached B.advanced C.changed D.left 46.A.effect B.effort C.order D.experiment 47.A.outoforder B.outofplace C.outoftime D.outofstyle 48.A.keep B.choose C.wear D.remain 49.A.grasped B.seized C.caught D.held 50.A.satisfactory B.thrilling C.moving D.astonishing 51.A.concerned B.upset C.worried D.anxious 52.A.pushed B.pulled C.drew D.paid 53.A.already B.ever C.even D.still 54.A.eyes B.attention C.head D.coat 55.A.thought B.realized C.admitted D.spotted 56.A.getawaywith B.comeupwith C.makedowith D.catchupwith 57.A.Suddenly B.Finally C.Clearly D.Indeed 58.A.terribly B.beautifully C.wonderfully D.magically 59.A.proof B.mistake C.error D.fault 60.A.carried B.settled C.held D.stayed
假设你是红星中学高三1班学生李华.在高考前剩下的日子里你的朋友Peter想了解你的计划请你给他写一封回信.信的内容包括: 1.你的计划和愿望是什么? 2.你打算如何实现你的愿望. 注意: 1.词数100左右; 2.可以适当增加细节以便行文连贯; 3.短文中不能出现与本人相关的信息. DearPeter Yours LiHua.
ThereareprobablynopeopleonEarthwholiketogossipasmuchastheBritish.Ifpryinginto打探other'sliveswereanOlympicsportthenTeamGBwouldsurelytakethegoldmedal. AndwhentheBritishcan'twatchthelivesofrealpeopletheyhaveanothersourceofentertainmenttofallbackon﹣thesoapopera.BritishsoapoperasareverydifferentfromUSTVdramas.Foronetheyarenormallylongerrunning.ThetwomostpopularCoronationStreetandEast﹣endershavebeenrunningfor48and24yearsrespectively.Botharebroadcastseveraltimesaweeksoremarkablytherehavebeenmorethan7000episodesofCoronationStreet. ThemostobviousdifferenceisthatunlikeUSdramastheBritishsoapoperasfocusontherealworld.Thereislittleglamour魅力thestarsarerarelyrichandtheynormallyhaveboringjobs.Perhapstheappealisthatthelivesofthecharactersoftenmirrorthelivesoftheaudience﹣butwithsomedramaadded.Thismeanstheviewercanrelatetothecharactersandfeelthepainandhappinesstheygothroughontheshow. BecausethesesoapoperaslastfordecadesthecastiseverchangingTheshowsrarelyfocusononeortwomaincharacters.Liketherealworldpeoplecomeandgoallthetime.Howeverthereareexceptions.Street'swilliamRoach76hasplayedtheroleofKenBarlowsincetheveryfirstepisodeoftheshowin1960andheisstillaregular. Thechoiceofwhichsoapoperayoufollowisoftencultural:PeoplefromthenorthofBritishtendtowatchCoronationStreetasitissetinManchester.PeoplefromthesouthgenerallypreferEast﹣enderswhichissetintheeastofLondon.Theshowisgenerallyconsideredgrittierandisaimedatayoungeraudience. 28.WhatisthemaindifferencebetweenAmericandramasandBritishsoapoperas? A.Americandramasarelonger. B.Britishsoapoperasarelonger. C.Americandramasdealwithdangerousthings. D.Britishsoapoperasdealwithrealpeople. 29.WhydoBritishpeopleliketowatchsuchoperas? A.Theycanfindtheirownlifefromtheoperas. B.Theycanenjoytheoperasintheirfreetime. C.Theycanwatchtheoperasformanyyears. D.Theycareaboutthefateofthecharactersintheoperas. 30.Theunderlinedworldepisodesinthe2ndparagraphprobablymeans. A.plays B.pages C.issues D.parts 31.OnecharacteristicofBritishoperasisthat. A.thecharactersplaythesameroleforalongtime B.thecharactersintheplayoftenchange C.peopledon'tknowwhatwillhappennext D.thereisonlyoneortwocharactersinthem.
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