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已知直线l为函数y＝ex图象的切线，若l与函数y＝﹣x2的图象相切于点（m，﹣m2），则实数m必定满足（ ）
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高二下学期数学《》真题及答案
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已知函数y=x+1+lnx在点
（1，2）处的切线l，若l与二次函数y=ax
2
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已知函数fx=ex﹣mx+1的图象为曲线C若曲线C存在与直线y=ex垂直的切线则实数m的取值范围为
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25分假如你是校报负责人急需在学校内聘一位同学任英文版的编辑请你用英文以AnEnglishEditorWanted为题目写一则招聘启事.内容要如下 1该工作主要包括两部分一是从英文报刊杂志及互联网上选择适合文章二是选择与编辑同学们的来稿. 2希望该同学满足下列要求 ①乐意奉献出业余时间 ②英文与美术皆好熟练使用电脑. ③感兴趣的同学请在本周内与学生会Students'Union联系. 注意1词数80左右2不要逐字翻译要组成一篇通顺连贯的短文. AnEnglishEditorWanted
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3分学生应该尊重老师并在公共场所举止得体的建议值得考虑.respectbehaveworthwhile同位语从句 .
1分Thebooksweresointerestingthattheyinnotime. A.sold B.weresold C.hadbeensold D.wouldsell
7.5分Itseemsthatthenewsindustryhasoneprimaryfocuskeepingpeopleuptodateonthestoriesofthemomentprovidingthebestinsightintoeveryinstancewherethereaderscan'tbetherethemselves.Decadesagothismeantwhennewsbrokejournalistsscrambledtocoveritdeliveringthekeyfactsanalysisandinsight.Theytoldtheiraudienceswhattheyneededtocareaboutandwhatthejournaliststhoughtwasimportant.AllofthisarrivedonyourdoorstepwiththedeliveryofthemorningpaperorwassqueezedintoanhouroflocalandnationalnewsonyourTV. Butwhilethegoalsofanewsorganizationremainthesameastheywereintheheyday全盛时期ofWalterCronkiterevolutionaryforcesbehindthesceneshavefundamentallytransformedtherelationshipthatreadershavewiththenews. Asthenewsmovesfrominktoscreensandthemobileplatformbecomestheforcetobetakenseriouslyjournalistsandthepublicationsthatsupportthemarefacedwithnewchallengesthatextendwellbeyondgatheringthetopstoriesoftheday.Asourdigitalworldexpandsouroptionsfornewsbasedonthefocuswritingstyleviewpointanddesignpublishersarefacedwiththebalancingactofmaintainingthereputationasatrustednewssourcewhiledevelopingnewincentives动机inordertoensuretheirreadership. Whilethenegativeshavebeenwelldocumentedthisongoingevolutionhasalsoresultedinamajorstepforwardforthefutureofjournalism.Ithasforcednewsbrandstolistentotheiraudiencesandbeginaconversationthatforsolongwasone﹣sided.Afterallthewebisopenfordiscussionshouldn'tourjournalismbeaswell? Readersshouldfeelempoweredtonotonlyjointheconversationaboutthenewsbutalsojoinintheeffortoftellingthewholestory.Notonlyareourmobilephonesasourceforustowatchandreadthetopstoriesthey'realsonews﹣gatheringdevicesthatempowercitizenjournaliststofillintheblanksandprovideacomprehensivepictureofthenewslandscape. 1Whatdoestheauthorthinkofthenewsindustryinthepast? A.Therewasnoeasyaccesstonews. B.Journalistsdidn'toftencommentonnews. C.Journalistswereimportantindeliveringnews. D.Publishersdidnotcareaboutreadersthatmuch. 2Thechallengesthatpublishersarefacednowarecausedby. A.people'sdecreasinginterestinnews B.moreoptionsavailablefornews C.alackofideasfornewincentives D.abadreputationofthenewsindustry 3Whatdoesthetextmainlytalkabout? A.Readersshouldbesensitivetonewsaroundthem. B.Readersshouldtakeadvantageofthemobileplatform. C.Readersdon'thavetorelyonjournalistsfornewsnow. D.Readersnowcangetinvolvedintheprocessofdeliveringnews.
15分ManystudentswanttofindfriendsontheInternetasawayofpracticingtheirlanguageskillsandlearning1differentcultures.WiththeInternetfindingfriendshasbeenmuch2easyandsuchrelationshipiscalledkeypals.Howeveryoushouldtakecarewhen3findfriendsontheInternet. Firstlookforreviewsofyourchosensites4learnmoreaboutotherstudents'experiences.Don′tjoinserviceuntilyou5doyourresearch.Thenyou'dbetteruseanicknameratherthanyourrealnametoprotect6youandnevergivepersonal7informtoanyoneyourhomeaddressphonenumberandbirthday8include.What'smoreyoushouldstopcontactwithothersifyoufeeluncomfortablewiththetopicsofconversation. Meanwhileit'sbesttoaskappropriatequestionstolearnsomeone'spersonalexperience9mayhelpyouunderstand10wholeculture.Mostimportantlytellyourteachersparentsoreventhepoliceifaproblemarises.
3分很显然你应该为你的不守信用向她道歉.obvious
15分Doyouhavesuchkindofexperience?Inabusyoumaylookatastrangerbutnottoolong.Andifhesensesthathe1stareathemayfeeluncomfortable. Thesamehappensindailylife.Ifyouarelookedatformorethannecessaryyouwilllookatyourselfupanddowntosee2anythingiswrongwithyou.Ifnothinggoeswrongyouwillfeeluncomfortable.Eyesdospeakright? 3looktoolongatsomeonemayseemtoberude.Butthingsaredifferentwhen4comestoastareattheoppositesex.Ifaman5glanceatawomanformorethan10secondsthatmeanshewishestomakeherknowheisadmiringher.Normallythespeakerinconversationwilllookatthelistenerattimestomakesurethatthelistenerdoespayattentionto6theformerissaying.Apoorliarusuallymakeshimself7exposebylookingtoolongatthevictimsincehebelievesinthefalseideathattolookstraightintheeyeisasignofhonest8communicate.Actuallycontinuouseyecontactexistsinloversonlywhowillenjoylookingateachothergentlyforalongtimetoshowlovethatwordscannotconvey. 9evidenteyecontactshouldbedoneaccordingtothespecificsituationandtherelationship10twopeople.
15分Flyingcarsmaysoonbecomea1real.TherideshareserviceUberhasasked2expertfromNASAtheAmericanspaceagency3helpthecompanydevelopcarsthatcanfly. Uberplanstouseflyingvehicles4thefuturetoavoidtrafficinandaroundcities.Thecompanywantstousesmalltotallyelectricaircraft5couldtakeoffandlandlikeahelicopterontopofparkinggarages.Ubersaiditsflyingvehicleswouldbemuch6quietcostlesstooperateandproducelesspollutionthanhelicopters. OnepersoninSanFrancisco7writeonTwitterIusedtothinkflyingcarswasaridiculousidea.8IchangedmymindthismorningwhenIsatinheavytraffic.AnotherpersonaddedfromMumbaiIndiaI'mreadingaboutUber9hireaNASAengineertobuildflyingcarswhileI'mstuckintraffic.Thereishope. Theexpertpredictstherewillbeseveralearlymodelsofflyingcarsthatcan'tfly10theybutwithhumanpilotswithinonetothreeyears.
3分令我们欣慰的是很多保护区正在被建造以保护濒临灭绝的野生动植物免于被猎杀.reliefendangerprotect…from
如图所示A为地球赤道表面的物体B为环绕地球运行的卫星此卫星在距离地球表面的高度处做匀速圆周运动且向心加速度的大小为a已知地球同步卫星的轨道半径为6.6RR为地球的半径引力常量为G．则下列说法正确的是
下列核反应属于人工转变的是
7.5分Filledwithmuchhouseworkmealsandchildcareathomemanypeoplefeelthatbeingatworksoundsmorelikehavingapicnic.Evenforthosewhohaveahappyfamilylifetheyfeelactuallymorestressedathomethanatwork. RecentlyastudycarriedoutbytheresearchersatauniversityintheUSAfoundlowerlevelsofhormone荷尔蒙releasedinresponsetostressinmostsubjectswhentheywereatworkcomparedtowhentheywereathome.Thiswastrueforbothmenandwomenandparentsandpeoplewithoutchildren. Bothmenandwomenshowedlessstressatwork.Butwomenaremorelikelytoreportfeelinghappierthere.Menweremorelikelytofeelhappierathome.Expertssaythereareotherreasonswhyworkislessstressfulthanhomeformany.PaidworkismorevaluedinsocietysaidSarahDamasketheleadresearcheronthestudyHouseholdworkisboringandnotparticularlyrewarding. Wegetbetteratourjobwithtimeandtheincreasedabilitymeanslessstressandmorerewards.Yetnoneofusnomatterhowlongwe'vebeendoingitevertrulyfeelslikeanexpertatparentingorevenatmarriage. Thesupportandfriendshipofco﹣workersalsoofferstressrelief.Athomemeanwhilestressspreadsandincreasesquickly.That'sthereasonwhymosthousewiveswishtheywerethebreadearnersDr.Damaskesays. Muchoftheadvicetofamiliesandcouplesincludesthewarningtoleaveworkstressatofficeandeventochangeourmind﹣setfromworktohomeforexampleawalkaroundtheblock.Therecentfindingsthoughsuggestourhomelifenotourattitudemightbedueforsomechange. 1AccordingtoParagraph1manypeoplefeelthatbeingathome. A.islikehavingapicnic B.isaperfectwaytomanagestress C.offersgreaterrelaxationthanatwork D.canbringmorestressthanintheworkplace 2AccordingtoSarahDamaske. A.menfeelhappieratworkthanwomen B.parentswithoutchildrentendtofeelhappier C.householdworkisnotasrewardingasworkonajob D.bothmenandwomenfeelhappierathomethanatwork 3Accordingtotherecentfindingswhatshouldwechangetosolvetheproblemmentioned? A.Ourattitude. B.Ourhomelife. C.Ourmind﹣set. D.Ourworkingstyle.
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