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若对任意正数x,不等式ax≤x2+1恒成立,则实数a的最大值为( )
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高一下学期数学《》真题及答案
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BeyingOperarepresentsthefinestcombinationofliteraturemusicdancekungfufineartsandmanyotherarts.Itswayofperformingisdifferentfromoperaanddrama1 BeyingOperaisakindofartthatpaysequalattentiontosingingspeakingactingandfighting.2Meanwhile.BeijingOperaprovidestheopportunitytoappreciatethepleasingartisticbalanceofthedancethestrengthandmusicevenfromonlyoneact3AccordingtothehistoricalrecorditdatesbacktothemiddleperiodoftheQingDynasty.Inthe55thyearruledbytheEmperorQianlongthemostfamousfourtheatricalgroupsinAnhuiwenttoBeijingtoshowtheiroperaperformanceandthengotagreatsuccess.ThenbasedonAnhuiOperaandHanOperaandalsomixedwithcharacteristicsofBeijingdialectBeijingOperawasformed4 TheBeijingOperawasofficiallyformedafterthe20thyearoftheEmperorDaoguang1840.Atthattimetheformsofeachkindofarias唱腔andthelanguagecharacteristicofBeijingOperaoriginallycameintobeing.NewchangesappearedinBeijingOpera'sroles.5Laterthefirstgenerationoftheoperaactorsalsoappeared. A.Beijingoperaisakindofmodemopera. B.ActuallyBeijingOperahasitsowncharacters. C.ManyrolesoftheBeijingOperahadappeared. D.BecauseitwaspopularinBeijingitspreadnationwide. E.ManypeoplewonderwhatistheoriginoftheBeijingOpera. F.Itenablestheaudiencetobeinspiredbylanguagemusicandfinearts. G.AlthoughinwasformedinBeijingitdidn'thaveitsoriginsinBeijingtotally.
TheothernightIhadtogotoameetingwhichlastedpastmydaughter'sbedtime.I1homeandwasbrushingmyteethwhenI2andthereonthebathroommirrorwasanoteinthe3ofaheart.ItsaidHiMom!ILoveYou.Laurel.4Icutaheartoutofapieceofpaperandpasted贴an5nexttoherssayingILoveYoutooLaurel.LoveMomwhichshe6thenextmorning. Ourfamilyhas7thatbyintegrating互相writingintoour8activitieswebecomemorethoughtfulofeachother.Meanwhileourdaughterislearningtoenjoywritingandbecomingan9writer. WhileteachinginaprimaryschoolI10howinfluentialparentscanbeaschildrenlearntowrite.11whenourdaughterfirstbegantoscribble乱涂Ibecame12byherwork.Iofferedpraiseforher13forIfoundthatscribblingisfarmorecomplexandimportantthanIhad14.Itwasobviousthatherscribbles15beinglovelyartobjectsshowedalotabouther16oftheworldofwriting. Graduallyourfamilybeganwritingagreatdeal.IsensedthatwritinghelpedLaurellearn17toread.Asamatteroffactby18myownchildandherfriendsandbyreadingprofessionalbooksIbecamemoreandmore19abouthowwritingdevelopsandhow20canhelpchildrenbecomeeagerwriters. 1A.left B.returned C.missed D.headed 2A.turnedup B.turneddown C.lookedup D.lookedon 3A.size B.shade C.model D.shape 4A.Immediately B.Suddenly C.Finally D.Usually 5A.picture B.article C.note D.page 6A.felt B.wrote C.read D.heard 7A.found B.imagined C.dreamed D.doubted 8A.boring B.useful C.daily D.personal 9A.important B.ordinary C.poor D.skilled 10A.learned B.regarded C.considered D.discussed 11A.Yet B.Though C.But D.So 12A.disappointed B.attracted C.puzzled D.worried 13A.effects B.efforts C.suggestions D.methods 14A.cared B.insisted C.realized D.proved 15A.besides B.farfrom C.insteadof D.lessthan 16A.arguments B.fear C.understanding D.dislikes 17A.when B.how C.what D.whether 18A.noticing B.discovering C.checking D.observing 19A.particular B.clear C.anxious D.crazy 20A.teachers B.friends C.books D.parents
小红将30g氯酸钾和二氧化锰的固体混合物加热制取氧气待反应完全后将试管冷却称量得到固体的总质量为20.4g请计算 1生成氧气的质量是多少克 2原混合物中氯酸钾的质量是多少 3混合物中二氧化锰的质量是多少写出计算过程
Ifyoufindyourselflosingthemotivationtodoyourhomeworkyouarenotalone.36Ifyouwanttogetgoodgradesofcourseyoumustdoyourhomework.Here'showtofindthemotivation 37Ifyouaretootiredyou'lljustwanttowatchtelevisioninsteadofthinkingaboutyourhomework.Plusyou'llhaveamucheasiertimerememberingwhatyou'vereadifyouareenergetic. Turnoffthedistractions分散注意力的事.Turnoffthemusicandtelevision.Ifyoudon'tneedyourcomputerortheInternetforyourhomeworkturnitoffaswell.Makesureyourstudyareaisfreefromdistractions.38 Startrightaway.Doingyourhomeworkrightafteryougethomecankeepyoufromfallingintothetrapofendlesshoursofdistractions.39AlthoughitmaynotbepopulartodoyourhomeworkonaFridaynightyou'llhavetherestoftheweekendfree. Createaschedule.40Planoutwhenyouwilldoeachpartoftheassignment.Splitthemintosmallpartssothatyoucanfeelgoodaboutcompletingeachpart.Itcanbemucheasiertodealwithabigassignmentorprojectonceyou'vesplititintomanageablepieces. Homeworkcanbeboringbutit'sanecessaryevilifyouwanttopassyourclasses.Onceyoumakeaplantofinishyourhomeworksticktoit. A.Getenoughrest. B.Gatheryourmaterials. C.Writeallofyourassignmentsonachecklist. D.Manystudentsdelayindoingtheirhomework. E.You'lleasilygetdistractedandavoidfinishingyourhomework. F.Plusthematerialyou'velearnedwillstillbefreshinyourmind. G.You'llbeabletofinishyourhomeworkmuchfasterifyoucanfocusonit.
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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. DearAbby Howareyou?TodayI'vegotawonderfulnewstotellyou.IhaveofferedascholarshipatauniversityinAustraliaformyfurthereducation.OnehundredandtwentystudentstookexamforitbutonlyafewwaschosenandIwasoneofthem.Howevermyparentsarenothappyaboutit.Theyarestrongagainstmegoingthere.TheysayitistoofarawaythattheywillnotseemeforawholeyearandtheyareafraidofIwillfeellonely.Theycan'timagineagirlsoyounglivealone.Theyaskmestudyinthecapitalinstead.ThenI'llbeabletocontinuelivingwiththem.HowcanIpersuadethemtoacceptthefactIhavegrownup? Bestwishes Jane.
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阅读下面材料在题后空白处填入适当的内容每空一词或括号内单词的正确形式. Itis2years61wehadacleaningladyandforsomereasonmyhusbandhasbecomeverydemandingtowardher.Hebelievesshedoesnotworkaswellassheusedto.Hecomplainsalotandhasdecidedtocomplaintoher.YesterdayItriedseveral62timetodiscusswithhimmy63satisfywithherworkbuthewasalittlebitupset.ThismorningIlookedatthehouseandallthecleaningshe64dobefore.Ithoughtitwasunfairtocomplainbecauseshewasdoingsuch65greatjob.SoIfoughtforheragain66sayitwasunnecessarytocomplain.Shewasdoingwellandshedeservedtoget67paymoreandtoreceivesomeextramoneyforthenewyear.And68finalmyhusbandtoldherthatwehaddecidedtopayhermore69wasasurprisetoher. I'mveryhappyIhaveprotectedthisladyfromunfairwordsandthatwearetreatingherfairlynowanddoingsomethingtoshortenthegap70therichandthepoor.
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Spaceiswhereourfutureis﹣tripstotheMoonMarsandbeyond.Mostpeoplewouldthinkthatasidefromcomets彗星andstarsthereislittleelseoutthere.Butsinceourspacejourneystartedwehaveleftsomuchtrashtherethatscientistsarenowconcernedthatifwedon'tcleanitupwemayallbeinmortal致命的danger. Thefirstpieceofspacejunkwascreatedin1964whentheAmericansatelliteVanguardIstoppedoperatingandlostitsconnectionwiththegroundcenter.HoweversinceitkeptorbitingaroundtheEarthwithoutanyconsequencesscientistsbecameincreasinglycomfortableabandoningthingsthatnolongerservedanyusefulpurposeinspace. Itisestimatedthattherearenowover500000piecesofman﹣madetrashorbitingtheEarthatspeedsofupto17500milesperhour.Thejunkvariesfromtinypiecesofpaintchippedoffrocketstocamerashugefueltanksandevenodditemslikethemillion﹣dollartoolkitthatastronautHeidemarieStefanyshynPiperlostduringaspacewalk. Themajorproblemwiththespacetrashisthatitmayhitworkingsatellitesanddamagetravelingspacecraft.MoreoverpiecesofjunkmaycollidewitheachotherandbreakintopieceswhichfallbacktotheEarth.Toavoidthisscientistshaveinventedseveralwaysforclearingthesky.Groundstationshavebeenbuilttomonitorlargerpiecesofspacetrashtopreventthemfromcrashingintoworkingsatellitesorspaceshuttles.Futureplansincludeacooperativeeffortamongmanynationstostoplitteringinspaceandtocleanupthetrashalreadythere. 1Whatwasthefirstpieceofman﹣madespacetrash? A.Acamera. B.Atoolkit. C.Afueltank. D.Abrokensatellite. 2WhywerescientistsNOTconcernedaboutspacetrashinthebeginning? A.Itnolongerservedanyusefulpurpose. B.ItwasmillionsofmilesawayfromtheEarth. C.Itdidnotcauseanyproblems. D.Itwasregardedassimilartocometsandstars. 3Whichofthefollowingstatementsistrueaboutspacejunk? A.Itishugeheavymachines. B.Itneverchangesposition. C.ItfloatsslowlyaroundtheEarth. D.Itmaycauseproblemsforspaceshuttles. 4Whathasbeendoneaboutthespacetrashproblem? A.Scientistshavecleanedupmostofthetrash. B.Largepiecesofspacetrasharebeingcloselywatched. C.Manynationshaveworkedtogethertostoppollutingspace. D.Groundstationsarebuilttohelpstorethetrashproperlyinspace.
LanternFestivalfalls1thefifteenthdayofthefirstlunarmonth.Thisisthefirstfullmoonofthenewyearrepresentingunityandperfection.Thisfestivalalsomarksthe2officeendofthelongholiday. Therearemanylegends传说relatedtotheoriginsofLanternFestival. Accordingtoonelegendonceinancienttimesacelestial天上的swancameintothehumanworldwherei3shootdownbyahunter.TheJadeEmperorthe4highgodinHeavenwasangryaboutthis.He5plananattackonEarthonthefifteenthdayofthefirstlunarmonthwithorderstokillallpeopleandanimals.Buttheothercelestial6begintodisagreewithhimandriskedhislife7warnthepeopleofEarth.As8resultbeforeandafterthefifteenthdayofthefirstmontheveryfamilyhungredlanternsoutsidetheirdoorsandsetofffirecrackersandfireworks烟花爆竹givingtheimpression9theirhomeswerealreadyburning.BysuccessfullytrickingtheJadeEmperorinthiswayhumanbeingsweresavedfrom20destroy
假如你是李华近年来很多大城市交通拥堵严重影响了人们的生活和经济发展.请针对此现状用英语给某英语报社写封信谈谈你的看法和建议. 注意 1.词数100左右 2.可适当增加细节以使行文连贯 3.开头和结尾已给出不计入总词数. Deareditor Iamwritingtoyoutotalkabouttheheavytraffic. Idohopemysuggestionswillbetaken. Yours LiHua.
五一长假小明和家人到总溪河去游玩. 1他们携带以下物品这些物品中主要材料不属于有机合成材料的是填对应字母 a.塑料水壶b.涤纶防晒衣c.纯棉太阳帽 2小明想知道总溪河的水是硬水还是软水可用检验 3小明口渴买了一瓶矿泉水矿泉水属于填“纯净物”或“混合物” 4中午小明用餐时选择的是“一碟青菜搭一个馒头”这种“经典”搭配主要补充的营养成分是 糖类.
WelcometoTheMetropolitanMuseumofArt TheMetwhichisshortforTheMetropolitanMuseumofArtpresentsover5000yearsofartfromaroundtheworldforeveryonetoexperienceandenjoy.MillionsofpeopletakepartinTheMetexperienceonlineoroffline. Sinceitwasfoundedin1870TheMethasalwaystriedtobemorethanastoreroomofrareandbeautifulobjects.EverydayartcomesaliveintheMuseum'sgalleriesandthroughitsexhibitionsandeventsrevealing显示bothnewideasandunexpectedconnectionsacrosstimeandacrosscultures. Notes I.HowcanIobtainpermissiontofilmorphotographatTheMetropolitanMuseumofArt? Pleasee﹣mailadetailedrequesttocommunications@metmuseum.org. II.HowcanIobtainsuitableimagestoreproduceinamagazinenewspaperorwebsite? ToviewandrequestpressimagesfortheMuseum'scurrentandupcomingexhibitionsandnewsstoriesabouttheMetpleasesigninorregisterforapressaccountinthePressImagessectionoftheonlinePressRoom. III.AllotherimagerequestsshouldbedirectedtoArtResourcethroughitswebsitehttp://www.artres.combytelephoneat212﹣505﹣8700ore﹣mailatruests@artres.co.YoumayalsosubmityourrequestusingtheImageRequestFormavailableontheMet'swebsite. IV.IfyouhaveanyotherquestionspleasecontacttheMuseum'sDigitalDepartment DigitalDepartment TheMetropolitanMuseumofArt 1000FifthAvenue NewYorkNewYork10028﹣0198 Telephone212﹣650﹣2550 E﹣mailprivacypolicy@metmuseum.orp 21.Whattypeofwritingisthistext? A.Abusinessguide.B.Anadvertisement.C.Aresearchreport.D.Anartsurvey. 22.WhatcanwelearnabouttheMetfromthetext? A.TheMethasahistoryof5000years. B.TheMetstopscollectingartsrightnow. C.PeoplestartedtovisittheMetonlinetobuyobjects. D.PeoplecannottakeaphotowithoutthepermissionoftheMet. 23.Whatshouldyoudoifyouwanttohaveimagesusedforamagazine? A.Telephoneat212﹣505﹣8700. B.ContacttheMuseum'sDigitalDepartment. C.WriteanapplicationattheonlinePressRoom. D.E﹣mailtocommunications@metmuseum.org.
Theworld'sfirstSkyPoolhasbeenuncoated曝光﹣andit'llgiveanyoneatouchofdizziness眩晕unlessheorsheisnotbotheredbyheights. Situatedinthecapital'snewriversidedistrictbesideBatterseaPowerStationtheglasspoolhanging10storeysor110feetupasabridgebetweentwoapartmentbuildingsis25mlong5mwideand3mdeepwithawaterdepthof1.2m.Swimmerswillbeabletolookdown35meterstothestreetbelowastheytakeadipwithonly20cmofglassbetweenthemandtheoutsideworld.It'sevengotabarfoldingchairsandanorangegarden. ThepoolwillbepartofEmbassyGardensatNineElmsahuge£15billionbuildingprojectbesidethenewAmericanEmbassyinsouth﹣westLondon.Theprojectiscreatingthousandsofapartmentsthesmallestofwhichareexpectedtocostnearly$1millionandthepoolwillonlybeopentotheapartments'owners. EmbassyGardenstakesdesigninspirationfromtheMeatpackingDistrictofNewYorkwithfloortoceilingwindowsandbrickfrontages.ThedesignerSeanMulryandesiredtopushtheboundariesinthecapabilityofconstructionandengineeringanddosomethingthathadneverbeendonebefore.TheSkyPool'stransparentstructureistheresultofsignificantadvancementsintechnologiesoverthelastdecade. TheexperienceofthepoolwillbetrulyuniqueanditwillfeellikefloatingthroughtheairincentralLondon. ThosepeopleluckyenoughtoswimtherewillhaveaperfectviewofthePalaceofWestminsterandtheLondonEye.Itwillbeasellingpointfordeveloperswhenthesecondstageofthedevelopmentisreleasedtomarket. 28.WhocanswimintheSkyPool? A.AnyoneatNineElms. B.VisitorstoLondon. C.PeoplelivinginEmbassyGardens. D.Thosewhoarenotterrifiedofheights. 29.PeopleluckyenoughtoswimintheSkyPoolcandothefollowingexcept. A.drinkingwithfriends B.experiencingdivingandsurfing C.appreciatingtheLondonEye D.sittingintheorangegarden 30.Whatdoweknowfromthetext? A.ThepoolliesinthecentreofLondon. B.Thepoolis25metresabovetheground. C.ThepoolwassimilartoNewYork'smodernconstructions. D.ThepoolishelpfulforsellingapartmentsinEmbassyGardens. 31.Wecaninferfromthetextthat. A.theapartmentsinEmbassyGardensarefairlyexpensive B.thenewAmericanEmbassyhasbeenmovedaway C.NineElmsisastreetinEmbassyGardens D.buildingthepoolisnotacomplexjob.
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假定你是李华暑假想去一家外贸公司兼职已写好申请书和个人简历resume.给外教MrJenkins写信请他帮你修改所附材料的文字和格式format 注意 1.词数100左右 2.可以适当增加细节以使行文连贯.
AnorganizationEyeCare4Kidsisbringingmuch﹣neededeyecaretopoorkids.Itprovidesfreeeyeexaminationsforkidsfrompoorfamilies.FoundedbyJosephCarbonein2001theorganizationhashelpedaround100000childreninUtahandNevada. NowCecilSwyersabiomedicalengineerwhowasonceapoorchildhimselfisbringingthecharity'sservicestopoorstudentsinArizonasothatvisionimpairment视力受损doesn'tstandinthewayoftheireducation. EyeCare4Kidsisbringingeyecareandglassestofamiliesthatwouldn'thavethemeanstopayforthemsaidMarioVenturafromIsaacElementarySchoolDistrictthefirstschooldistrictinArizonatoreceiveitsservices. Goodvisionisimportanttoachild'slearningexperience.Accordingtoastudyupto80percentoflearninghappensthroughsightforchildrenbetween6and18yearsold.Withoutpropereyecareit'sdifficultforstudentstolearnbetterandsucceed. SwyersishopingthatbybringingtheorganizationtoArizonahe'llhelpalotmorestudents.Heteamedupwithtwootherorganizationstogetdoctorstovolunteertheirtimewiththegroup.UsingEyeCare4KidsmobileclinicSwyersvisitedAltaE.ButlerElementarySchoolandhasalreadyhelped40students. Theschoolwasgratefultoreceivetheeyecareespeciallysincetheservicescametothem.It'sisgreatforussaidAssistantPricipalCindyAlonso. SwyersishopingtobringEyeCare4Kids'servicestootherschoolsinthestate.Hesaidthathopefullyhisworkwillhaveapositiveeffectonstudents'futures.Ifwecanhelpstudentswhilethey'reyoungwecanmakeadifferenceintheirfutureshesaid. 1EyeCare4Kidshelpsstudentsby. A.givingthemsunglassesforfree B.offeringmoneytotheirfamilies C.examiningtheireyesforfree D.solvingtheirproblemsinstudy 2Whoisinchargeoftheorganization'sservicesinArizona? A.JosephCarbone. B.CecilSwyers. C.MarioVentura. D.CindyAlonso. 3Wheredostudentstakeaneyeexamination? A.Intheclassroom. B.Inthemobileclinic. C.Inthenearbyhospital. D.Intheplaceswherestudentslive. 4Whatwouldbethebesttitleforthetext? A.EyeCare4KidsWasFoundedbythePoor B.EyeCare4KidsDevelopsataFastSpeed C.EyeCare4KidsPoorKidsSucceed D.EyeCare4KidsFightsforBetterEducation
设样本数据x1x2…x10的均值和方差分别为1和4若yi=xi+aa为非零常数i=12…10则y1y2…y10的均值和方差分别为
阅读下面短文根据所给情节进行续写使之构成一个完整的故事.Lauriesatquietlyintheemptydressingroomattheice﹣skatingrink溜冰场.Shehadnotbeenskatinginanycompetitionsinceherleftkneewasbadlyinjuredinanaccidentsixmonthsago.AsshewaitedforherturntoskateLauriewasverynervous.Sheknewthattodaywasaveryimportantdayinhercomeback.'IfIcanwintoday'shethought'IcanskateintheWorldCupnextyearandthenmaybeIcanmakeittotheOlympics.'LauriewasjusttoldthatshehadatoughcompetitionthisyearagirlfromConnecticutnamedJinnyJordanwhowasreallystrongineverything.'Sheistheoneyouhavetobeatthisyear.'thecoachsaid.MinuteslaterthedoorswungopenandLauriesawayoungwomanwhowasaboutherownage.Theyoungwomandumpedsomeofherbelongingsontoachair.Thebagfelltothefloorwithathud.LauriefeltuncomfortableasshelookedatJinny.'Sothisismycompetition'thoughtLaurie.'BecauseofherImaylosetonight.''Thiscostumewasmymom'sidea'Jinnystaredtheconversationlookingdownatherredwhiteandblueskatingdress.'Ilooklikeaflag.'Lauriecouldn'tkeepfromsmiling.ShepointedtoJinny'sskatingbag.'Somestufffelloutofyourbag.'Lauriesaid.Jinnylookedattheclothingandequipmentthatlayscatteredonthefloor.Asshebegantogatherherbelongingsthedooropened.'Jinny'calledsomeone'You'dbettergivethetapeofyourmusictothesoundengineerrightaway.''IthoughtIgavehimmymusictapehalfanhourago'saidJinny.'Tellhimit'sthegreenboxwithmyinitials姓名的首字母writteninwhiteintheright﹣handcorner.''Heclaimsyounevergaveittohimandhe'sgettingangry.''ThenIdon'tknowwhatididwithit'saidJinnyhurryingout.Laurieknewthatmusicwasnearlyasimportanttotheprogramasskatingitself.Ifshelosthermusictapeshemightaswellforgetaboutskating.Lauriestoodupandwalkedtothechairtodoafewmorekneebends.注意1.所续写短文的词数应为150左右2.应使用5个以上短文中标有下划线的关键词3.续写部分分为两段每段的开头语已为你写好4.续写完成后请用下划线标出你所使用的关键词语.Paragraph1Suddenlyshesawsomethingsmallanddarkgreenbehindthelegofthedressingtable.____Paragraph2FeelingrelievedLaurieskatedquicklytothecenteroftherinkaftertheannouncerfinallycalledhername.____
LastspringIwasfortunatetobechosentoparticipateinanexchangestudyprogram.InmyapplicationletterIwascarefulto1howmuchIwantedtoseeFranceevidentlymyexcitementreallycamethroughinmywords.OnceI2thatIwasgoingallIcouldthinkaboutwasthefunofforeigntravelandmakingallsortsofnewand3friends.Whiletravelingwasinspiringandmeetingpeoplewas4nothingaboutmyterminFrancewaswhatI5. ThemomentIarrivedinParisIwas6byaniceFrenchcouplewhowouldbecomemyhostparents.Myentireexperiencewasjoyousandexciting7Ireceivedsomeshockingnewsfrommyprogramcoordinator协调人therehadbeenadeathinmyhostparents'extendedfamily.TheyhadtotraveloutsideFranceforseveralweeks.ThatafternoonIhadto8outofonefamily'shouseintoanother.TheexchangecoordinatortoldmeI'dhavea9thistimeandaskedwhetherIcouldshareabedroomwithanEnglishspeaker.Toavoidthetemptation__to10mynativelanguageIaskednottobe11withanEnglish﹣speakingroommate.WhenIgottomynewroomI12myselftomynewroommatePaoloaBrazilian巴西人thesameageasIwhomIwassurprisedtofindplayingoneofmyfavoriteCDS!Injustafewhoursweknewwe'dbegoodfriendsfortherestofthe13. IleftFrancewithmany14sowhenpeopleaskedmewhatmyfavoritepartofthetripwastheyarealways15tohearmetalkaboutmyBrazilianfriendPaoloandscoresofweekdaysinclassweeknightsonthetownandweekends16Franceweenjoyedtogether.Ilovehowpeople17seemsodifferentbutendupbeingso18.ThemostvaluablelessonIgainedfromstudyinginFrancewasn'tjusttorespecttheFrenchpeople19torespectallpeopleforyournextbestfriendcouldbejustacontinentaway.Iwouldrecommendanexchangeprogramtoanyonewhowantstoexperienceforeignculturesandgainmeaningful20. 1A.express B.discuss C.announce D.argue 2A.approved B.knew C.warned D.denied 3A.stubborn B.anxious C.interesting D.universal 4A.boring B.upsetting C.promising D.exciting 5A.doubted B.liked C.expected D.feared 6A.greeted B.witnessed C.sponsored D.supported 7A.when B.until C.since D.while 8A.move B.travel C.walk D.rush 9A.housekeeper B.leader C.colleague D.roommate 10A.learn B.appreciate C.speak D.master 11A.combined B.fitted C.involved D.placed 12A.added B.introduced C.devoted D.adapted 13A.term B.week C.month D.vocation 14A.presents B.suitcase C.stories D.dreams 15A.disturbed B.surprised C.embarrassed D.concerned 16A.analyzing B.investigating C.describing D.exploring 17A.can B.shall C.must D.need 18A.generous B.similar C.independent D.distant 19A.but B.and C.or D.so 20A.instructions B.data C.facts D.friendships
AirportExpress WiththeAirportExpressyouareneverfarfromtown.Thereisatrainevery10minutesreadytorushyoubetweentheairportandHongKongStationintheheartoftheshoppinganddowntowndistrictinabout24minutes.OrtraveltotheAsiaWorld﹣Expoinjust1minutefromtheairport. AirportExpressservicehours Mon.﹣Fri.550amto115am Sat.﹣Sun.500amto200am Tickets TherearethreetypesofticketfortravellingtoandfromtheAirportSingleJourneyRoundTripandSameDayReturn.SingleJourneyTicketandSameDayReturnTicketarevalid有效的ondayofissue发放.RoundTripTicketisvalidfor30daysfromdayofissue.YoucanalsousetheOctopusCardfortheAirportExpress.TheOctopusCardisanelectronicstore﹣valueticketanditcanbeusedonmostpublictransport.Thefarewillbededucted扣除fromthestoredvalueeachtimesoyoudonothavetocarryheavycoins.Thecardisvalidforthreeyearsaftervaluehasbeenadded. Traveltips •Childrenunder3travelforfree. •PassengerstravellingontheAirportExpressarenowabletowriteemailanddoonlinesearcheswithWi﹣Fiservice. •FormoreinformationaboutAirportExpresspleasevisitwww.hongkongairport.comorcall00852﹣21818888. 1WhatisgoodaboutaOctopusCard? A.Itsavesmoneyforitsusers. B.Itissoldineverystore. C.Itsvalidityisunlimited. D.Itavoidsitsuserscarryingcoins. 2WhatcanyouknowaboutAirportExpress? A.HongKongStationisjust1minutedistancefromtheairport. B.SingleJourneyTicketisacceptablefor30days. C.Childrenarefreeofchargefortickets. D.PassengerscansurftheInternetontheAirportExpress. 3Whatisthemainpurposeofthepassage? A.ToprovidesuggestionsabouttheAirportExpress. B.ToadvertisetheOctopusCard. C.ToinformreadersoftheAirportExpressservice. D.TointroducetheAirportExpressschedule.
MOOCsMassiveOpenOnlineCoursesarefreebutwithouttutoringandareopentoanyoneanywhereintheworld.Thecoursesareflexible﹣normallythreetofivehoursofstudyaweek﹣doneatanytimeshort5to10weeksandvideo﹣rich.Theyarealsoheavilydependentoncrowdsourcingyoucandiscussacoursewithfellowstudentsthroughonlineforumsdiscussionboardsandpeerreview.Studentsdon'thavetofinishthecoursespassassessmentsordoassignmentsbutiftheydotheygetacertificationofparticipation. TheOpenUniversitylaunchedFutureLearntheUK'sanswertoUSplatformssuchasCourseraEdXandUdacitywhichhavebeenofferingMOOCsfromtopUSuniversitiesforthepasttwoyears.Theresponsehasbeenincrediblewithmorethanthreemillionpeopleregisteringworldwide.Meanwhilein2012EdinburghUniversitybecamethefirstnon﹣USinstitutiontojoinCoursera'spartnershipcomprising13universities.Wealreadyrun50onlinemaster'sdegreessothiswasalogicalexpansionsaysProfessorJeffHaywoodEdinburgh'svice﹣principal.It'saninvestmentinteachingmethodsresearch.HowamIgoingtoteachintroductoryphilosophyto100000people?That'swhatIcalleducationalR&D.HeaddsIfyoulookahead10yearsyou'dexpectallstudentsgraduatingtohavetakensomeonlinecoursessoyou'vegottoresearchthat.OurMOOCsarenomoreincompetitionwithourdegreesthanalifelonglearningcoursebecausetheydon'tcarrycredits. CooperationiskeyHaywoodstresses.Itisfarbettertooffer20﹣30coursesinyourownareasofexpertise专门技能andletotherinstitutionsdolikewise.ProfessorMikeSharplesFutureLearn'sacademicleadgoesfurtherWe'vetiedtheelementsavailablebeforeintoapackageofcoursesofferedbyleadinguniversitiesworldwideonanewsoftwareplatformwithanewwayofpromotingitandalsoanewsocial﹣learningteachingmethod.Youwon'tjustreceiveanexambutbeabletodiscussandmarkeachother'sassignments. BathUniversityoneofmorethan20universitiesworkingwithFutureLearnlaunchesitsfirstcourseInsideCancernextJanuaryandregardsMOOCsasawayofbreakingdownagebarriers.There'snoreasonwhysomeonedoingGCSEsshouldnotlookatourMOOCsandgetquiteawaythroughthemorsomeoneatPhDlevelandbeyondsaysProfessorBernieMorleyexpertforlearningandteaching. 1MOOCshavethesefeaturesEXCEPTthat. A.MOOCshaveaplatformforlearnerstosharetheirlearningexperience B.MOOCsprovideteachers'instructionsifyouhavesomedifficulty C.MOOCscanbeadjustedaccordingtopeople'slearningpace D.MOOCsarefreeofchargeforanyone 2TheresponsetoFutureLearnhasbeenthoughttobeunbelievablemainlybecause. A.allthecoursesontheplatformareavailabletoanyoneintheworld B.EdinburghUniversitybecamethefirstnon﹣USinstitutiontojoinit C.studentscangetacertificationofparticipationwithoutpassingassessments D.thenumberofpeopleregisteringintheplatformisbeyondexpectation 3WhatcanbeinferredfromProfessorBernieMorleyinthelastparagraph? A.PeopleatPhDlevelhavealreadyknowneverythingaboutMOOCs. B.PeoplewithvariouslearninglevelswillprobablyshowinterestinMOOCs. C.InsideCancerwillbethemostpopularcourseforsomeonedoingGCSEs. D.MOOCsarenotsocompetitiveaslifelonglearningcoursesduetotheproblemsofcredits. 4Thepassagemainlydealswith. A.theappearanceofanewlearningplatform B.thevariousopinionsonFutureLearn C.thepopularityofno﹣creditcourses D.theadvantagesofonlineteachingmethods
fyouhaveneverheardofpawpawyouarenotalone.MostAmericansdonotknowofthefruitalthoughitisnativetotheUnitedStates.OncehoweveritwasoneofthemostpopularfruitsinNorthAmerica.HappilythosewholovethepawpawaretryingtoreturnittoitsformerpositioninAmericanfoods. ThepawpawisakindoffruitthatgrowsontreesfoundallovertheeasternUnitedStates.Itissimilarinsizetoatypicalmango.Ithasadullgreen﹣coloredskinandasoftalmostcreamyorangeinside.Mostpeopleagreethatthepawpawtasteslikeacombinationofbananasapricots杏andmangos.Mostpeopleareverysurprisedbyitssweettaste.ThefruithasaveryshortharvestseasonfromtwotothreeweeksinSeptemberandOctober. Thepawpawhasneverbeensoldcommercially商品化地.Thefruitrequiresaveryspecialenvironment﹣﹣﹣lowwetareasthatsometimesflood.Inadditionthefruitisgoodtoeatforonlytwotothreedaysafterharvesting.Thismakesithardtosellanywheredistantfromthepawpawtrees. Plantersareagaingrowingpawpawtreesandharvestingthefruit.Inseveralstatesfarmershaveorganizedpawpawfestivalstoreintroducethefoodtopeople. Farmersaretryingtogrowdifferentkindsofpawpawsthatwillbeeasiertoshipandsellcommercially.DonnaandJimDavisarepawpawfarmersinWestminsterMaryland.TheytoldNationalPublicRadiothattheypurchasedtheirpawpawtreesinthe1990sandnowsellthefruitatfarmermarketsandonline. Sowhoknows?Maybethepawpawwillshowupsoonatamarketnearyou. 1Whatisthepawpaw'smostoutstandingnature? A.Itisveryrichinsugar. B.Itssourtasteislikeanapricot C.ItgrowsontreesallovertheUS. D.Itlookslikeacombinationofbananasandmangos. 2Whyisitdifficultforthepawpawtobecomeabigbusiness? A.Ithastobesoldfarfromthepawpawtree. B.Itishardtokeepitsfreshnessforlong. C.Itisdifficulttoharvestinthelowandwetareas. D.Itneedsexpensivetransportationtothemarket. 3Whatdofarmersdotodealwiththedisadvantageofpawpaws? A.TheyadvertiseonNationalPublicRadio. B.Theyorganizepawpawfestivals. C.Theyplantimprovedpawpawtrees. D.Theysellthefruitatfarmermarkets. 4Whichofthefollowingcanbethebesttitleforthetext? A.Atraditionalfruithaschangedpeople'sdiet. B.Mostpeoplehavehardlyeatenfreshpawpaws. C.FruitofpawpawplaysanimportantpartinAmerica. D.AforgottenAmericanfruitisbecomingpopularagain.
已知曲线C1y=cosx则下面的结论正确的是
Theboyshowsgreatcuriousaboutanimals.
点M20到双曲线C﹣=1a>0b>0渐近线的距离为1则双曲线的离心率为
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