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如图所示,一水平台绕中心竖直轴以ω=2rad/s的角速度匀速转动,台面上放有一滑块,且滑块与台面恰好保持相对静止,已知滑块到转轴的距离为0.5m,认为最大静摩擦力等于滑动摩擦力,则滑块与台面的动摩擦...
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高三下学期物理《》真题及答案
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均匀细棒OA可绕通过其一端O且与棒垂直的水平固定光滑轴转动如图所示今使棒从水平位置由静止开始自由下
角速度从小到大,角加速度从大到小
角速度从小到大,角加速度从小到大
角速度从大到小,角加速度从大到小
角速度从大到小,角加速度从小到大
有一种叫飞椅的游乐项目示意图如图所示长为L的钢绳一端系着座椅另一端固定在半径为r的水平转盘边缘转盘可
科氏加速度如图所示平面机构AB长为l滑块A可沿摇杆OC的长槽滑动摇杆OC以匀角速度ω绕轴O转动滑块B
如图所示是一种叫飞椅的游乐项目的示意图长为L.的钢绳一端系着座椅另一端固定在半径为r的水平转盘边缘转
如图所示长为L.的轻直棒一端可绕固定轴O.转动另一端固定一质量为m的小球小球搁在水平升降台上升降平台
小球做匀速圆周运动
当棒与竖直方向的夹角为α时,小球的速度为
棒的角速度逐渐增大
当棒与竖直方向的夹角为α时,棒的角速度为
10分如图所示已知绳长L1水平杆长L2小球的质量m整个装置可绕竖直轴转动当该装置从静止开始转动最后以
有一种叫飞椅的游乐项目示意图如图所示长为L.的钢绳一端系着座椅另一端固定在半径为r的水平转盘边缘转盘
如图所示质量相等的
B.两物块置于绕竖直轴匀速转动的水平圆盘上,两物块始终相对于圆盘静止,则两物块 ( )
A.线速度相同
角速度相同
向心加速度相同
向心力相同
如图所示用一根长为l=1m的细线一端系一质量为m=1kg的小球可视为质点另一端固定在一光滑锥体顶端锥
凸轮以匀角速度ω绕O轴转动杆AB的A端搁在凸轮上如图所示瞬时AB杆处于水平位置OA为铅直则该瞬时AB
A
B
C
D
有一种叫飞椅的游乐项目示意图如图所示长为L的钢绳一端系着座椅另一端固定在半径为r的水平转盘边缘转盘可
如图所示一个金属薄圆盘水平放置在竖直向上的匀强磁场中下列做法中能使圆盘中产生感应电流的是
圆盘绕过圆心的竖直轴匀速转动
圆盘以某一水平直径为轴匀速转动
圆盘在磁场中向右匀速平移
匀强磁场均匀增加
如图所示
为一水平旋转的橡胶圆盘,带有大量均匀分布的负电荷,在圆盘正上方水平放置一通电直导线,电流方向如图所示。当圆盘高速绕中心轴OO′转动时,通电直导线所受安培力的方向是( )
A.竖直向上
竖直向下
水平向里
水平向外
凸轮以匀角速度ω绕O轴转动杆AB的A端搁在凸轮上如图所示瞬时AB杆处于水平位置OA为铅直则该瞬时A
A
B
C
D
有一种叫飞椅的游乐项目示意图如图所示长为L.的钢绳一端系着座椅另一端固定在半径为r的水平转盘边缘.转
如图所示质量相等的
B.两物块置于绕竖直轴匀速转动的水平圆盘上,两物块始终相对于圆盘静止,则两物块( ) A.线速度相同
向心力相同
向心加速度相同
角速度相同
如图所示玻璃试管内壁光滑长为L.试管底部有一质量为m电荷量为-q的小球视为质点匀强磁场方向竖直向下磁
可能为O
等于mL ω
2
等
等于mLω
2
O+qBLω
等于mLω
2-
-qBLω
如图所示一水平台绕中心竖直轴以ω=2rad/s的角速度匀速转动台面上放有一滑块且滑块与台面恰好保持
0.1
0.2
0.4
0.8
如图所示水平金属圆盘半径为ro为圆心ob为竖直金属轴它正以角速度ω绕轴转动磁感应强度为B的匀强磁场竖
如图所示完全啮合的齿轮A.B的圆心在同一水平高度A轮的半径是B轮的2倍固定在B轮上的箭头方向竖直向上
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Youmayhavegrownuplivingwithsistersandbrothersorthismaybeyourfirsttimesharingyourlivingspacewithsomeoneelse.1Howeveritcanalsobeagreatpartofyourcollegeexperience.Followthesetipstomakesureyouandyourroommatekeepthingspleasantandsupportivethroughouttheyear. Beclearfromthebeginning. Maybeyouhateitwhensomeoneinterruptsyouwhenyouaresleepingeverymorning.Maybeyouneedtenminutestoyourselfbeforetalkingtoanyoneafteryouwakeup.2It'snotfairtoexpecthimorhertopickuponthemrightawayandcommunicatingwhatyouneedisoneofthebestwaystogetridofproblemsbeforetheybecomeproblems. 3 Thismayseemsimplebutit'sprobablyoneofthebiggestreasonswhyroommatesexperienceconflicts.Don'tyouthinkhe'llmindifyouborrowhisshoesforaquicksoccergame?Forallyouknowyoujuststeppedoveranuncrossableline.Don'tborrowuseortakeanythingwithoutgettingpermissionfirst. Beopentochange. Youshouldexpecttolearnandgrowandchangeduringyourtimeatschool.4Asthetermprogressesrealizethingswillchangeforbothofyou.Becomfortableaddressingthingsthatunexpectedlycomeupsettingnewrulesandbeingflexibletoyourchangingenvironment. FollowtheGoldenRule. 5Nomatterwhatyourrelationshipisattheendoftheyearyoucantakecomfortknowingyouactedlikeanadultandtreatedyourroommatewithrespect.
Homelessnessisabigproblemacrosstheworld.Manypeopleandorganizationsareworkingtosolveit.MelYoungfromScotlandandHaraldSchmiedfromAustriaaretwosuchpeople.In2001thetwomenattendedaninternationalconferenceabouttheproblemofhomelessness.Latertheybegantowonderiffootballcouldhelpsolvetheproblem.In2003theydecidedtostarttheHomelessWorldCuporganization.Itchoosesandtrainslocalhomelesspeoplefortheyearlyfootballcompetition.Todayabout500peoplefromalmost50countriesplayintheHomelessWorldCup.Andtheprogramischanginglives. DamienisfromIreland.Formanyyearshestruggledwithdrug毒品addiction.Butin2006heplayedforIreland'sHomelessWorldCupteamandsincethenhehasbeendrugfree! ManyoftheHomelessWordCupplayerslikeDamienhavestruggledwithdrugaddiction.Howeversomeplayersarehomelessbecauseofpoverty.Alexisoneofthem.HesaysIwasborninMatharethebiggestworstslum贫民窟inKenya.Icouldnotfindanythingtoeat.Alsoschoolingwasaproblem.MylifestartedwhenIstartedplayingfootball.FootballgaveAlexjoy.Ittaughthimtoworkhardandhelpedhimbelievethathecouldachievesomething. Footballcanevenhelppeoplewhohaveexperiencedextremetragedy.NajibayoungmanfromAfghanistanhaslivedthroughmuchwar.Manyofhisfamilymembershavedied.Butfootballhashelpedhimsurvive.ItisonlyduringthegamesthatIdonotthinkaboutmysituation.I'mnotinterestedinanythingotherthanfootballandit'stheonlythingIdesireNajibexplains. Drugspovertyandwararecommoncausesofhomelessness.Playinginafootballcompetitionmaynotdirectlytreatdrugaddictionsolvepovertyorendwarbutitcangivepeopleemotionalstrengthandhelpthemlearnimportantlifeskills. 1WhatdoweknowabouttheHomelessWorldCup? A.Itisheldeveryyear. B.Itfirsttookplacein2001. C.Itistheideaoftwotroubledfootballlovers. D.Itwasintroducedataninternationalconference. 2AfterplayingintheHomelessWorldCupAlex. A.gaveuptakingdrugs B.begantolivearichlife C.gotagoodschooleducation D.becameconfidentaboutthefuture 3WhatdoestheunderlinedworddesireinParagraph4probablymean? A.Remember B.Watch C.Want D.Create 4Whatwouldbethebesttitleforthistext? A.Footballforeveryone B.Lasthopeforthehomeless C.Endhomelessnessfromnowon D.Beathomelessnessthroughfootball
7.5分VisitorstoBritainmayfindthebestplacetosamplelocalcultureisinatraditionalpub.Butthesefriendlypubscanbedangerousplacesofpotentialgaffes失礼forthenewcomers. AteamofresearchershavediscoveredsomeoftheunknowncustomsofBritishpub﹣startingwiththedifficultyofgettingadrink.Mostpubshavenowaiters﹣youhavetogotothebartobuydrinks.AgroupofItalianyouthswaiting45minutesbeforetheyrealizedtheywouldhavetofetchtheirown.Thismaysoundinconvenientbutthereisahiddenpurpose. Pubcultureisdesignedtopromotesociabilityinasocietyknownforitsreserve.Standingatthebarforserviceallowsyoutochatwithotherswaitingtobeserved.ThebarcounterispossiblytheonlysiteintheBritishIslesinwhichfriendlyconversationwithstrangersisconsideredentirelysuitableandreallyquitenormalbehavior.Ifyouhaven'tbeentoapubyouhaven'tbeentoBritain.ThistipcanbefoundinabookletPassporttothePubTheTourists'GuidetoPubEtiquetteacustomers'ruleofconductforthosewantingtosampleacentralpartofBritishlifeandculture. Thetroubleisthatifyoudonotfollowthelocalrulestheexperiencemayfallflat.Forexampleifyouareinabiggroupitisbestifonlyoneortwopeoplegotobuythedrinks.Nothingannoystheregularcustomersandbarstaffmorethanagroupofstrangersblockingallaccesstothebarwhiletheychatandhesitateaboutwhattoorder. 1Theunderlinedwordsampleinthefirstparagraphprobablymeans. A.taste B.experience C.test D.record 2ThecultureofpubinBritainissodevelopedto. A.encouragepeopletocommunicatewitheachother B.encouragemorepeopletoconsumedrinks C.attractmoretouriststothepubs D.formitsowncharacterofculture 3WhatdoestheauthormeanbygivingtheexampleofagroupofItalianyouthsinParagraph2? A.Britishpubsdon'talwayshavewaitersorwaitresses. B.ThereisalwaysahiddenpurposeinmostBritishpubs. C.ItisquiteconvenientforpeopletogetadrinkinBritishpubs. D.NotknowingthecustomofBritishpubsmaycauseinconvenience.
如图若点P在反比例函数y=x<0的图象上过点P作PM⊥y轴于点MN为x轴上一点若△PNM的面积为3则k=
Assoonaswewentaourshiplefttheport.
Mostpeopleagreethatapetaddsjoytoaperson'slife.Scientistsarenowfindingthathavingapetmaykeepitsowner1.Andgoodhealthmayaddyearstoaperson'slife. Scientistshavebeen2thelinkbetweenpetsandhealthforyears.In1990astudywasdonewithpeopleaged65andolder.It3thatpetownerswenttothedoctorlessthanpeople4pets.Dopetsmakepeople5?Arepeopleabletohandletheireverydaylivesbetter?AlanBeckwhoisaresearchersaysthat6theanswertothequestionsisyesthenhavingpetsmaybeagoodidea. Canpetsalsohelppeoplelivelonger?RebeccaJohnsondidastudyto7.Johnsonteachesnurseshowtocarefor8people.Herstudyshowsthathavingpetsmaycausepeopleto9moreslowly. Thehumanbodymakesmanychemicals.Someofthechemicalsmakepeoplefeel10.Othersmakepeoplefeelbad.InJohnson's11levelsofthegoodchemicals12whenpeoplewerearoundpetswhilelevelsofthebadchemicalswentdown.Thegood13seemedtoslowtheagingofcells.Ifthisis14maybepeopleshouldspendmoretimewiththeir15.Thenpeoplemightfeelbetterand16longer. Youmightbeallergic过敏的topets.Oryoumaynotwantto17apet.Neverfear.Aroboticorcomputerpetmaybejustthethingforyou. ScientistsaretestingcomputerpetsliketheroboticdogAIBO.Theywanttoseeif18petscanhelppeopletheway19dogsdo. Willaroboticpet20therealpetsittingwithyouonthesofa?Somethingtellsusthatitwillprobablybecomeareality. 1A.healthy B.excited C.mad D.hurried 2A.carryingout B.makingup C.lookingat D.breakingdown 3A.warned B.showed C.reminded D.advised 4A.through B.beyond C.against D.without 5A.busier B.funnier C.happier D.angrier 6A.though B.until C.if D.unless 7A.findout B.putout C.turnout D.setout 8A.sick B.friendly C.old D.lovely 9A.age B.move C.walk D.grow 10A.bored B.surprised C.sleepy D.good 11A.study B.work C.story D.case 12A.changed B.varied C.fell D.rose 13A.sides B.chemicals C.studies D.dogs 14A.important B.unusual C.true D.impossible 15A.children B.pets C.friends D.neighbors 16A.live B.wander C.stay D.travel 17A.headfor B.searchfor C.cheerfor D.carefor 18A.family B.computer C.baby D.toy 19A.brave B.quiet C.faithful D.real 20A.destroy B.replace C.improve D.accompany
不等式组的解集在数轴上表示正确的是
7.5分GivenachoicewouldThreeLittleRobotsbeingchasedbyabigbadwolfAbuildsuccessivelymorewolf﹣resistanthousesorBkillthewolfwiththeirnailgun?IfyouchoseByouareprobablyarobotwhohasn'tyetmetQuixotealearningsystemthatteachesrobotshownottokillbyusingfairytales. WhileStephenHawkingElonMuskandBillGatestrytoscareuswithtalesofrobotskillinghumansateamofresearchersatGeorgiaInstituteofTechnologyisscaringrobotsbyusingfairytalestoteachthemhowtomakeproperdecisionswhenfacedwithreal﹣worlddilemmaswhilelackingamoral道德的compass.Theysuggestrobotscanbetaughtmoralbehaviorusingbooks.Readingfairytalesorstoriescanhelpthemlearnwhatisgoodandbadandhowtobehavewellinasociety. Fables寓言fromvariousculturescanprovideartificialintelligencewithsocialskillsandrolemodelsessentialtothepeacefulcoexistenceofmenandrobotsscientistatGeorgiaInstituteofTechnologyclaiminanewstudy. Accordingtoresearcherstomakearobotunderstandtheactionsofahumanitmustfirstturnedthemorallessonscontainedinfablesintoaspeciallydesignedarchitectureofareasoningcompatiblewithartificialintelligence. AnearlyexampleofthisreasoningisasystemcalledQuixotenamedfortheleadingcharacterofMigueldeCervantes'classicnovel.Quixoteusesfableplotstogivemachineintelligenceguidanceformoralproblem﹣solvinganddependingonwhatdeedscharactersengageinthesystemsendseitherrewardorpunishmentsignalscausingrobotstoactmorehumanelyresearcherssuggest. ThefunctionofQuixoteisdependentuponanothersystemcalledScheherazadeapreviousprojectstartedbythesameteam.ScheherazadecollectsdifferentstoryplotsfromInternetanddevelopsinteractivestories.Thosestoriesarethenturnedintodecisionflow﹣chartsprovidingahugenumberofbranchingpathsfollowingeverysteptaken. Quixoteisintheearlydevelopmentstageaccordingtoresearchersnotingthatitworkscurrentlywithrobotsthatinteractwithhumansinonlyaverysmallrangeoffunction. 1Whatcanweinferfromparagraph1? A.Robotsareafraidofwolves. B.Robotsarefondoffairytales. C.Robotsareadvancing. D.Robotsareconstantlygivenchoices. 2Whatshouldprobablyhappenifatestedrobotchosetocutinlineinpublicplaces? A.ItwouldbepunishedbyScheherazade. B.Itwouldapologize. C.Itwouldreasonwithhumanbeings. D.Itwouldberebuilt. 3WhichofthefollowingbestdescribethefunctionofQuixote? A.QuixotemakesfablesmeaningfultoA.L. B.Quixotegivesrobotsintelligence. C.QuixotecollectsstoriesfromInternet. D.Quixoteisanindependentsystem.
用如图的装置演示气体扩散现象其中一瓶装有密度比空气大的红棕色二氧化氮气体另一瓶装有空气.为了有力地证明气体发生扩散装二氧化氮气体的应是选填A或B瓶.扩散现象说明气体分子在不停的做.
MyparentsdivorcedwhenIwas5makingmymotherasingleparent.Wehadlittlemoneybutmymomgavemealotoflove.EachnightshesatmeonherlapandspokethewordsthatwouldchangemylifeKemmonsyouarecertaintobeagreatmanandyoucandoanythinginlifeifyouworkhardenoughtogetit. AtfourteenIwashitbyacarandthedoctorssaidIwouldneverwalkagain.EverydaymymotherspoketomeinhergentlelovingvoicetellingmethatnomatterwhatthosedoctorssaidIcouldwalkagainifIwantedtobadlyenough.ShedrovethatmessagesodeepintomyheartthatIfinallybelievedher.AyearlaterIreturnedtoschool﹣walkingonmyown! WhentheGreatDepression大萧条occurredmymomlostherjob.ThenIleftschooltosupportthefamily.AtthatmomentIwasdeterminednevertobepooragain. MyrealchangeoccurredonavacationItookwithmywifeandfivekidsin1951.Iwasangrythatthesecondclasshotelchargedanextraforeachchild.ThatwastooexpensivefortheaverageAmericanfamily.Idecidedtoopenamotel汽车旅馆forfamiliesthatwouldneverchargeextraforchildren.Therewereplentyofdoubtersatthattime. Notsurprisinglymotherwasoneofmystrongestsupporters.Weexperiencedalotofchallenges.Butwithmymother'swordsdeeplyrootedinmysoulIneverdoubtedwewouldsucceed.Fifteenyearslaterwehadthelargesthotelsystemintheworld﹣HolidayInn.In1979mycompanyhad1759innsinmorethanfiftycountrieswithanincomeof1billionayear. Youmaynothavestartedoutlifeinthebestsituation.Butifyoucanfindataskinlifeworthworkingforandbelieveinyourselfnothingcanstopyou. 1WhenKemmonswasalittlechildwhathismotherusuallytoldhimwas. A.funny B.touching C.fighting D.encouraging 2Formtheauthor'sviewwhoplayedthemostimportantpartinmakinghimwalkbacktoschoolagain? A.Mother. B.Teachers. C.Friends. D.Relatives. 3AccordingtothepassagewhatmadeKemmonsstartamotelbyhimself? A.Hispreviousbusinesssuccessofvariouslevels. B.Histerribleexperienceinthehotel. C.Hismom'ssupport. D.Hiswife'ssuggestion. 4InyouropinionwhichofthefollowingbestdescribesKemmons'mother? A.Modesthelpfulandhardworking. B.Carefulhelpfulandbeautiful. C.Lovingsupportiveandstrongwilled. D.Strictsensitiveandsupportive.
用反证法证明命题三角形的内角至少有一个角不大于60°时应假设
AsfewerpeoplechoosetomakesugarpaintingsthetraditionalChinesefolkcraftmighthavebecomea1distancememoryinsomeways.Howevera38﹣year﹣oldcraftsmanLiJianzhongisdevotedto2keeptheartofsugarpaintingalive. Liworkedasaminerformorethantenyears.After3minecloseddownLiturned4housingdecorationuntilhe5forcetogivethatupduetoafingerinjury.Earlierthisyearhediscoveredsugarpaintingsomethinghereallyhadaninterestin. Sincetherewasnosugarpaintingcraftsmaninhisvillagehestudiedby6hethroughlargequantitiesofvideosandinformationontheInternet.Lilovedpaintingwhenhewasyoungandhefounditeasytolearntheskillinsugarpainting.Hesoonmasteredtheskillandcouldmakea7varyofsugarpaintingsthusencouragingsomeofyoungpeople8followtheexampleofhim.Craftsman9normalpaintanimalsandflowersonastoneboardwiththesyrup糖浆.Whenthesugarcoolsdown10appearsisapieceofsugarart.
Fatherwasdiagnosedwithbraincancerduringthesecondhalfofmysenioryear.Itisatimewhenallthebigeventsinagirl'slifearehappening.Howeverthoughinpoorconditionfathermanagedtobepresentateveryoccasion.Hisdoctorsaidthatbyfocusingonallmyfutureeventsithelpedmydadlivelonger.Iguesssobecauseninedaysaftermyhighschoolgraduationmyfatherdied. ForthenextweekafterhisfuneralIdidn'tleavemyroomoreventoshower.FinallymymomstormedinandsaidMegangetup.Ihavesomethingforyoutoread.''Myfather'sdoctorhadsentmymotheraletter.ItcontainedthetypicalIamsorryforyourlosssentences.ButthisletterwasfarfromtypicalIcouldphysicallyseethepainthislosshadcausedhim.Inhisletterhewroteabouthowmyfatherinspiredhimtochangehislifeandthewayheworked.Heexpressedhisdesiretobecomeapersonlikemyfatherwhocaredmoreforthepeoplearoundhimandputeveryoneelsefirst. AfterIfinishedreadingitIdecidedtolivemylife.Iwentoutsideandgotajobasasummercampadvisor.Iworkedfromdawntodarkeverydaythatsummer.IgaveeverythingIhadtothekidsandslowlytheyhelpedtoheal治愈mewithoutevenrealizingwhattheyweredoing Mysummermirroredpartsofthelifemyfatherledinhislastfewdays.Ihadspentthesummermonthsgivingmyselftochildren.ItwasnottheseniorsummerIhadalwaysimagined.Itwasn'tallaboutme.Ihadlearnedthefinallessonmyfatherwasteachingmethatinordertoleadarichandhappylifeyoumustlearnhowtogiveyourselftoothers.Byhelpingthemyoureallyarehelpingyourself. 1Thedoctorsenttheauthorsmotheralettermainlyto. A.showtypicalconcernforherfamily B.encouragehertoliveahappylife C.mournherhusband'sdeath D.appreciateherhusband'sinfluenceonhim 2Whatdoweknowabouttheauthor'sseniorsummer? A.Shespentitthewayshehadalwayswanted. B.Sheworkedhardeverydaytoforgetherpain C.Shegainedquitealotwhilehelpingthekids. D.Shegotajobasherfatherhadexpected 3Whichwordcanbestdescribetheauthor'sfather? A.Selfless. B.Cautious C.Fearless D.Wise. 4Whichofthefollowingcouldbethebesttitleforthepassage? A.Dad'sfinallesson B.Myseniorsummer C.Myfather'sdeath D.Animportantletter
下列物品中通常情况下属于导体的是
论语•学路篇中说“名不正则言不顺言不顺则事不成事不成则礼乐不兴礼乐不兴则刑罚不中刑罚不中则民无所措手足所以名不正则民无所措手足.”上述推理用的是
一种声光报警器的电路如图所示各元件均能正常工作对可能出现的现象描述正确的是
Iwearcontacts隐形眼镜.SometimesIbringmyglassestoworkasabackup备份incasemyeyestiredout.InterestinglyonthedayswhenIbroughtmyglassesIalwaysneededthem.WhenmyglassesstayedathomeIneverfelttheurgetoremovemycontacts.Backupplanslikemyglassescanhaveunexpectedinfluencesonourbehavior.Thiseffectcanbepositivebutbackupplanscanalsodestroypursuit追求ofyourgoals Buthowcanabackupplancausefailure?Imaginebeingonthejobmarket.PlanAistoworkforatechfirm.Youknowgettinghiredthereisachallengesoyou'vemadeabackupplanabankingpositionDoesyourbankingbackupplanhelporharmyourchancesofgettingajob? Therearetwokindsofbackupplans.Oneisbasedaroundapossibleemergency﹣﹣ifplanAdoesnotworkthenusePlanB.SothejobseekermightsimplysubstitutePlanBifPlanAfails.HoweverPlanBmightbeuselessifyoudon'thaveenoughtimetoprepareforthebankingpositionafterbadnewsfromthetechfirm. Theotherkindofbackupplansaredifferent.PeopletakePlanAwhileactivelycomparingPlanAandPlanB.Forourjobseekerthatwouldmeanpreparingforbothinterviewsatthesametime. Thesecondkindofbackupplansintroducegreaterchallengesandarecostliertouse.OnemustactivelycomparePlansAandBallthetime.Youcouldputsomuchworkintothebackupplanthatyoucompromiseyourchanceforsecuringtheprimarygoal.Forthejobseekeractivelycomparingthetechandbankoptionsmightresultinunder﹣preparingorbothinterviews. Sowhatmakesagoodbackupplan?Backupplanschangethewaygoalsarepursuedsometimesfortheworse.AsyouthinkaboutyourownPlanBconsiderhowitisaffectingPlanA.Forwhatit'sworthIamsittinginmyofficewhilemyglassesaresafelyathome.Risky?Perhaps.Butmyeyesfeelfresh. 1Theauthormentionedtheglassesto. A.introducethetopic B.amusethereader C.presentthebackground D.explainthephenomenon 2Whichofthefollowingisthedisadvantageofthesecondkindofbackupplan? A.PlanBmighthavealotofchallenges. B.PlanBmightcostmuchtimeandenergy. C.Jobseekersmightfallintoadilemmasituation. D.Jobseekersmaynotbewellprepared. 3Whatisthemainideaofthepassage? A.Backupplansmightbeharmful. B.Backupplansareimportant. C.Backupplansmightbeimproper. D.Backupplansareofdifferentkinds 4Theauthordevelopsthepassagemainlyby. A.listingsomeexamples B.followingthetimeorder C.comparingdifferentideas D.analyzingcausesandeffects
假定你是李华你校英文报正在举行建国70周年看生活方式变迁主题征文活动.请你根据以下要点提示投稿 1.生活方式的变化至少写两点变化 2.变化给人们带来的好处 3.你的感受. 注意词数100左右开头已为你写好不计入文章总词数 可以适当增加细节以使行文连贯. Withtheadvanceofmoderntechnologynewinventionsanddevelopmentsarerisinginourdailylife
WantawonderfultravelinLondon?Don'tmissthefollowing! CartoonMuseum ThishighlyentertainingLondontouristattractioncoversthehistoryanddevelopmentofBritishcartoonsfromthe18thcenturytothepresentday.Youcanfindadetailedcollectionofalltypesofcartoonsinthismuseumincludingcaricatures讽刺漫画andrareexamplesofcartoonartit'sanidealplacetoentertainkidsofallagesaswellasaseriouscollectionforanimationenthusiasts. Thereareoverninehundredpiecesonexhibitandthemuseumregularlyholdseventswherebothchildrenandadultscanparticipate.BookingfortheseeventsisrecommendedduetothepopularityyearroundofthisLondonMuseum. Telephone02075808155 ChislehurstCaves ChislehurstinLondonishometochalkcavesthatwereminedbyhandforover8000years.AtourofthesecavesisanexcitingwaytoseehowBritishpeoplehaveimpactedontheirenvironmentoverthousandsofyears. Telephone02084673264 TheOldOperatingTheatreMuseum TheOldOperatingTheatreMuseumisoneLondonmuseumofferingafascinatinginsightintothemedicalprofessionofthepast.This300﹣yearoldherbgarret阁楼isBritain'sonlysurvivingoperatingtheatrewithawoodenoperatingtableandanobservationstandfromwhichvisitorscanwitnesssurgeryperformed. Telephone02071882679 CurzonMayfairCinanaMuseum RecentlyvotedoneofLondon'sbestcinemasbyTimeOutreaderstheCurzonMayfaircinemaiseverythingyouwouldexpectfromthisparticularpartoftownluxurious奢华的andtasteful.Showingmostlyart﹣houseandindependentfilms.theCurzonMayfairisuniqueintheworldofLondoncinemaforitsroleinscreeningthesefilmsforindustryandpress. Telephones03333210104 1WhatcanwelearnfromtheCartoonMuseum? A.Itisdesignedonlyforkids. B.ItistheoldestcartoonmuseuminBritain. C.Visitorscantakepartintheactivitiesheldinit. D.Onemustbookthemuseuminadvancetovisitit. 2Whichwillyoucallupifyou'dliketoknowsurgeryofthepast? A.02075808155・ B.02071882679. C.03333210104. D.02084673264. 3Whichofthefollowingmayattractanaturelover? A.ChislehurstCaves. B.CartoonMuseum. C.CurzonMayfairCinemaMuseum. D.TheOldOperatingTheatreMuseum.
At200amthisFridaymorningIreceivedatextmessagefromafriendaskingifIhadanySmileCardsinSpanish.Iimmediately1thatIdidn'thaveany.HoweverIaskedherwhyshewantedthem2inSpanishandifSmileCardsinEnglishwouldbe3. Tomy4shesaidshehadbeenoneofthefewselectedbyherhighschooltogoonaservicetriptoPanama.ShewantedtosharetheconceptofSmileCardsand5. Withchildreninthevillages.Iwastotally6andexcitedwithhearingthenews!SoIdecidedtostop7andcallhertogetmoreinformationaboutherservicetrip.Shewasleavingthatsamedayatmidnight.ItoldherIwould8aboutitandletherknowbyafternoonifIcould9anyinSpanish.Nolucktillmidday. 10therewasonetranslationoftheoriginalEnglishSmileCardinSpanishonline.Carryingthe11Iheadedovertoalocalprintingshopandaskedtheemployeeifhecouldprint100SmilecardsinSpanishby600pm.Theemployeesaiditwas12togetitsincehewasworkingbyhimselfandwas13withorders.DisappointedI14theEnglishversionoftheSmileCardandexplainedmy15tohim.Evenhewasexcitedandpromisedthathe'dtryhisbesttogetthem16. Whentheclock17ninetheSpanishSmileCardswereready.ToexpressmygratitudeIbroughtsomeIndianfoodtothisemployeetothankhimforhis18.Iquicklygotinto19mycarandmyfiend'shouseandshewaspatientlystandingoutsideawaitingmy20.Wedidn'tgetachancetohaveaproperconversationbutthatwasgoodenough. 1A.believed B.imagined C.responded D.noticed 2A.specially B.universally C.frequently D.officially 3A.accurate B.acceptable C.valuable D.flexible 4A.surprise B.puzzle Cdisappointment D.amusement 5A.solution B.amazement C.curiosity D.kindness 6A.confused B.rocked C.concerned D.satisfied 7A.talking B.travelling C.discussing D.texting 8A.worry B.bargain C.enquire D.quarrel 9A.takechargeof B.search C.control D.getholdof 10AStrangely B.Fortunately C.Obviously D.Hopefully 11A.excitement B.dream C.courage D.doubt 12A.necessary B.worthwhile C.impossible D.natural 13A.pleased B.curious C.occupied D.nervous 14A.tookout B.gaveout C.madeup D.usedup 15A.identity B.situation C.concept D.difficulty 16A.designed B.decorated C.written D.printed 17A.recorded B.exposed C.struck D.shook 18A.commitment B.judgement C.encouragement D.assessment 19A.steppedforward B.heldon C.showedup D.spedoff 20Aapology B.arrival C.explanation D.participation
Beawareofyourown长处andweaknesses.
如图已知直线a∥b∥c直线mn与直线abc分别交于点ACEBDFAC=4CE=6BD=3则BF=
使我感到惊讶的是这个小女孩的小提琴拉得这么好.使用主语从句和表语从句
假定你是高一的李华得知第七届世界军人运动会the7thCISMWorldGames将于2019年10月18日至27日在中国湖北武汉举行.请写一封信申请去做志愿者volunteer内容包括 1写信目的 2个人优势 3能做的事. 注意 1词数100左右 2可以适当增加细节以使行文连贯 3申请信的开头已给出不计入字数. DearSir/Madam IamLiHuaastudentstudyinginakeymiddleschool.
实验室有三瓶无色液体分别可能是水酒精过氧化氢溶液某兴趣小组欲加以鉴别请你帮助他们完成实验方案.1通过闻气味的方法首先能鉴别出来的一种物质是2小组同学提出可以用二氧化锰固体区分剩余两种无色液体分别取少量液体于试管中加入二氧化锰其中一只试管内观察到则该试管盛装的液体是过氧化氢溶液.
氨气NH3在一定条件下可以和氧气发生化学反应如下图所示分析并回答有关问题. 1甲物质中氮氢元素的质量比为 2写出丙物质的化学式 3甲乙丙丁四种物质中属于氧化物的有 4参加化学反应的甲乙的分子个数比为
Iamoftenaskedwhyreadingissoimportant.Icouldn'thelpbutquote引用TyrionLannisterfromthebook‘Gameofthrones'writtenbyGeorgeRRMartin.ThisconversationfollowswhenTyrionwasaskedwhyhereadssomuch Ihavearealisticgraspofmyown1andweaknesses.Mymindismy2.MybrotherhashisswordKingRoberthashiswarhammer战锤andIhavemymind…andamindneedsbooks3aswordneedsawhetstone磨石ifitistokeepthesword4.Tyriontappedtheleathercoverofthebook.That'swhyIreadso5JonSnow. ToquoteGeorgeRRMartinAreaderlivesathousandlivesbeforehedies.Themanwhoneverreadslivesonly6. Anoldfarmerlivedonafarminthemountainswithhisyounggrandson.EachmorningGrandpawasupearlysitting7thekitchentablereadinghisbook.Onedaythegrandsonasked‘Grandpa!ItrytoreadthebookjustlikeyoubutIdon't8itandwhatIdounderstandIforget9Iclosethebook.Whatgooddoesreadingthebookdo?' Thegrandfatherquietly10andrepliedTakethiscoalbasketdowntotheriverandbringmebackabasketof11. Theboydidashewastoldbutallthewater12beforehegotbacktothehouse.ThegrandfatherlaughedandsaidYou'llhavetomovealittlefasternexttimeand13himtotheriverwiththebaskettotryagain.Thistimetheboyranfasterbutagainthebasketwasemptybeforehereturnedhome.Outof14hetoldhisgrandfatherthatitwasimpossibletocarrywaterinabasketandhewenttogetabucket15.TheoldmansaidIdon'twantabucketofwaterIwantabasketofwater.You'rejustnottryinghardenoughandhewentoutthedoortowatchtheboytryagain.Atthispointtheboyknewitwas16buthewantedtoshowhisgrandfatherthatevenifheranasfastashecouldthewaterwouldleakoutbeforehegotbacktothehouse.Theboyagaindippedthebasketintotheriverandranhardbutwhenhe17hisgrandfatherthebasketwasagainempty.HesaidSeeGrandpait's18! Soyouthinkitisuseless?theoldmansaidLookatthebasket.Theboylookedatthebasketandforthefirsttimerealizedthatthebasketwas19.Ithadbeentransformedfromadirtyoldcoalbasketandwasnowcleaninsideandout. Sonthat'swhathappenswhenyoureadthebook.Youmightnotunderstandorremembereverythingbutwhenyoureadityouwillbechangedinsideand20!!! 1A.wisdom B.strengths C.shortcomings D.disadvantages 2A.tool B.weapon C.equipment D.instrument 3A.as B.before C.while D.because 4A.fast B.sharp C.smooth D.important 5A.few B.much C.little D.many 6A.it B.one C.that D.those 7A.at B.down C.along D.besides 8A.confirm B.believe C.understand D.convince 9A.quickly B.finally C.immediately D.frequently 10A.turnedup B.turnedout C.turnedaway D.turnedaround 11A.fish B.coal C.earth D.water 12A.wentout B.flewout C.droppedout D.leakedout 13A.sent B.asked C.ordered D.required 14A.breath B.control C.curiosity D.consideration 15A.even B.though C.instead D.however 16A.hopeful B.necessary C.impossible D.important 17A.heard B.arrived C.glanced D.approached 18A.useless B.hopeless C.helpless D.worthless 19A.same B.equal C.strange D.different 20A.out B.around C.anywhere D.everywhere
LastsummerIwenttooneoftheworld'smostfamoushistoricalplacestheForbiddenCityinBeijingwhatwasthehomeoftheemperorsofthelasttwodynastiesintheChinatheMingandQingDynasties.Thepalacehas10.000rooms.InMandarintheForbiddenCityiscallingthePurpleForbiddenCity.Howeverthecolorofthepalacehimselfisnotpurple.ThecolorpurplestandsthepowerofthegreatemperorsofChina.Itwassoasacredplacethatcommonpeoplecouldnotevendreamofevergothere.TheemperorsalsohavesomeofthelargerfestivalcelebrationsattheForbiddenCity.NowtheForbiddenCityisknownasahistoricalsiteformillionsoftouristfromallovertheworld.
不是你而是他为这件事情负责.not…but
YesI'llbereadyatnineinthemorning.Goodbyedearandthanksagain.IthadnotbeenaneasytelephonecallforMrsRobsontomake.HerdaughterhadbeenverykindofcourseandhadimmediatelyagreedtopickherupanddrivehertothestationbutMrsRobsonhatedtosaythatsheneededhelp.Sinceherhusbanddiedtenyearsagoshehadbeenproudofherselfonherindependence.Shehadcontinuedtoliveintheirlittlehousealone. ThateveninghowevershewasstandingatherlivingroomwindowstaringoutattheSOLDnoticeinthesmallfrontgarden.Herfeelingsweremixed.Ofcourseshewassadatthethoughtofleavingthehouseasitwasfullofsomanymemories.Butatthesametimeshewaslookingforwardtospendingherlastyearsneartheseabackinthelittleseasidetownwhereshehadbeenbornandgrewup.Withthemoneyfromthesaleofthehouseshehadboughtalittleflatthere.Sheturnedfromthelivingroomwindowandlookedroundattheroom.Therewasasmallfishtankwithtwogoldfishinit.WhenaskedwhyherhusbandusedtosayIt'snicetohavesomethingaliveintheroom.Sincehehadpassedawayshehadalwayskeptsomegoldfishandalwayshadsomethingaliveintheroom. ThenextmorningashertrainwaspullingoutofthestationMrsRobsoncalledtoherdaughterKateyouwon'tforgettocollectthegoldfishwillyou?Thechildrenwilllovethem.It's… IknowKateinterruptedgently.It'snicetohavesomethingaliveintheroom. 1AccordingtothefirstparagraphweknowthatMrsRobson. A.wastiredoflivingalone B.dislikedturningtopeopleforhelp C.wasnotlikedbyherdaughter D.wantedtolivewithoutherhusband 2HowwasMrsRobsonfeelingonherlastnightinthehouse? A.Sadandhopeful. B.Happybutworried. C.Proudandsad. D.Happybutnervous. 3MrsRobsonwasgoingto. A.beinhospital B.livewithherdaughter C.travelabroadalone D.liveinherhometown 4WhatcanwelearnaboutMrsRobsonfromthepassage? A.Shedislikedkeepingpetsathome. B.Shemissedherhusbandverymuch. C.Shehadthesamehobbywithherhusband. D.Shewasworriedaboutherdaughter'sbadmemory.
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