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如图所示是某款电养生壶及其铭牌的部分参数，当养生壶正常工作时，求： （1）养生壶正常工作的电阻． （2）若该养生壶的加热效率为80%，在标准大气压下，将初温是12℃的一壶水烧开，需要多长时间？...
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养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．下图是某款养生壶
如图甲所示多功能养生壶是一种用于养生保健的可以烹饮的容器类似于电水壶其最大的特点是采用一种新型的电
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．下图是某款养生壶
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．如图是某款养生壶
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内水加热.下图是某款养生壶及其
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．如图是某款养生壶
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热图是某款养生壶及其
如图所示是某款电热水壶及其铭牌的部份参数当电热水壶正常工作时求1电热水壶的电阻2将一壶水从25℃加热
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．如图是某款养生壶
在家电下乡活动中小明家买了一只WSJ-60型号电热壶其铭牌标志如图所示.现将一满壶20℃的0.5kg
养生壶采用高科技温控和过热保护系统免看管全自动保温如图甲所示是小梦家的养生壶它有高挡低挡保温三个功能
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．如图是某款养生壶
如图所示这是小明家新买的一款智能养生壶其铭牌上的一些数据如表所示． 1养生壶正常工作时通过的电
在家电下乡活动中小明家买了一只WSJ-60型号电热壶其铭牌标志如图所示.现将一满壶20℃的0.5kg
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．如图是某款养生壶
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热图是某款养生壶及其
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．如图是某款养生壶
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．如图是某款养生壶
图甲是小红家新买的电养生壶铭牌如图乙．为了测量它烧水时的效率小红进行了如下实验将1kg的水加到养生壶
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．如图是某款养生壶
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singledose剂量ofanexperimentalvaccine疫苗canprotectmiceagainsttheZika寨卡virusraisingrenewedhopeofavaccineforhumanssayscientists.TheUSteamsaytheresultspublishedinNaturearestrikingandshouldencourageresearchefforts. Testsinhumanscouldbegininmonths.Butevenifthesegowellalicensedvaccineforwidespreadusetoprotectthoseatmostrisk—suchaspregnantwomen—wouldstillbeyearsawayexpertsadvise.ZikahasbeenspreadingacrossCentralandSouthAmericaandmostrecentlyAfrica.Morethan60countriesandterritoriesnowhavecontinuingtransmission传播ofthediseasewhichiscarriedbymosquitoes.Theviruscausesseriousbirthdamagesduringpregnancyandhasbeendeclaredaglobalpublichealthemergency. Nowdevelopingavaccineforpregnantwomentoprotecttheirunbornbabiesisaninternationalresearchpriority优先事项.USscientistsfromtheWalterReedArmyInstituteofResearchtheBethIsraelDeaconessMedicalCenterandHarvardMedicalSchooltestedtwotypesofZikavaccineinmice—onebasedonbitsofgenetic基因的codefromthevirusandanotherthatisaninactiveandthereforeharmlesscopyofZika.Bothworkedwellprotectingeverymousethatwasimmunisedagainstthevirus.IncomparisonallofthemicenotgiventhevaccinecaughtZikaaftertheywereexposedtoit. Researcherssaytheywillpushaheadwithdevelopingtheneededvirusvaccine.TherearemanyexistingvaccinesforotherdiseasethatusethistypeoftechnologywhiletherearerelativelyfewDNA—basedvaccines.Ofcoursefuturetestswillneedtocheckthevaccineissafeandeffectiveinhumansaswellashowlongtheimmunitymightlast. 1Ifthetestsinhumansgosmoothly. A.avaccineforuseinthelaboratorywillbestillbeyearsaway. B.pregnantwomeninAfricawillbethefirsttobenefitfromthevaccine. C.alicensedvaccinewillstillnotbeaccessibleinashortterm. D.TheZikaviruswillcauselessseriousbirthdefectsduringpregnancyinmonths. 2WhichofthefollowingstatementsisNOTtrue? A.manycountriesareactivelyinvolvedintheresearchoftheZikavaccine. B.USscientistshavetestedmorethantwotypesofZikavaccineinmice. C.NoneofthemicegiventhevaccinecaughtZika. D.Itisstillunknownwhetherthevaccineissafeandeffective. 3Whichcanbethebesttitleforthepassage? A.Zikavaccineworksverywellinmice B.Zikavaccinestillhasalongwaytogo C.InternationalresearchesintoZikahavepaidoff D.MoreattentionhasbeenpaidtoZikavaccine
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阅读下面短文根据其内容写一篇60词左右的内容概要.'Meltingpot'meansaplacewherepeoplefrommanydifferentethnicgroupsorculturesformaunitedsociety.Theideacomesfromheatingmetalinacontainer.Whentheymeltthemetalsuniteandbecomesomethingnewandstronger.ThetermhasbeenusedtodescribetheUnitedStatesasanationcreatedfrompeoplewhocameherefrommanydifferentcountries.AFrenchmanwhowaslivinginAmericaexpressedtheideamorethan200yearsago.J.HectordeCrevecoeurpublishedabookcalled'LettersFromanAmericanFarmer'in1782.HewrotethatAmericanhadpeoplefrommanydifferentcountries.Hesaidthattheywouldbecomeanewpeoplewhoseworkwouldonedaychangetheworld.FormanyyearsAmericansgenerallyacceptedtheideaoftheircountryasameltingpot.Theywelcomedimmigrantsfrommanynations.Thoseforeignpeoplesettleddownlearnedthenewlanguageandbuilttheirlifeonthisnewland.Yetsomeofthoseimmigrantscriticizedthemeltingpotidea.TheyfelttheywereforcedtolosetheircultureandlanguageinordertobeacceptedinAmerica.Otherpeoplealsocriticizedtheidea.Theysaidtheaimofthemeltingpotistomakedifferentculturesdisappearintotheonerepresentingthelargestgroup.NewgroupsofimmigrantsfromAsiaandLatinAmericaarechangingtheUnitesStatestoday.SomeareresistinglearningAmericancultureandlanguageTheykeeptotheirowncustomsreligiousandlanguages.ReporterssaysomeAmericansfearthatthenationisseparatingintomanygroupsthathavenosharedpurpose.Otherssaythemeltingpotisnolongerchangingthenation'simmigrantsbuttheimmigrantsarechangingAmericawiththemanydifferentculturestheybringwiththem.SomeexpertswhostudyimmigrationsaytheynowcompareAmericansocietynotwithameltingpotbutwithasaladbowl.Asaladismadeofmanydifferentfoods.Theyeachkeeptheirowntastewithoutinfluencingotheringredientswhilebeingpartofasuccessfulproduct.InthiswayculturalgroupskeeptheircustomsandlanguagesandarestillpartofAmericansociety.
某公司快递员甲匀速骑车前往某小区送物件出发几分钟后快递员乙发现甲的手机落在公司无法联系于是乙匀速骑车去追赶甲．乙刚出发2分钟时甲也发现自己手机落在公司立刻按原路原速骑车回公司2分钟后甲遇到乙乙把手机给甲后立即原路原速返回公司甲继续原路原速赶往某小区送物件甲乙两人相距的路程y米与甲出发的时间x分钟之间的关系如图所示乙给甲手机的时间忽略不计．则乙回到公司时甲距公司的路程是米．
WangWhat'sG.P.A.? SmithG.P.A.stands1thegradequalitypointaverage.Qualitypointsareused2determinethestudents'rankinclassacademichonorsandacademicwarningandprobationorsuspension. WangHowcanIlistmyoverallundergraduateG.P.A.3use3digits? SmithIthinkit'sdifficulttochangeyourgrade4G.P.A.asoursystemofgradingisdifferentfrom5inyourcountry.I'dliketoadviseyoutosubmityour6officetranscripts文字稿ofallpreviousundergraduateandgraduatework. WangThat'sagoodidea.ItookTOEFLlastyear7Ihaven'ttakentheGRE.What'stobedone? SmithTheGREmay8requirebytheparticulargraduateorprofessionalprogram.YoushouldgoovertheTableofProgramcarefully.What'syourTOEFL9? Wang630. SmithWonderful.IngeneralthegraduatedivisionrequiresaTOEFLscoreofatleast575.Those 10TOEFLscoresareintherange500—575areadmittedconditionallyuponsuccessfulcompletionoffurthercourseworkinEnglishasasecondlanguage.
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Bothmenandwomenarelivinglongerthesedaysinindustrializedcountries.1Ingeneraltheycanexpecttolivesixorsevenyearsmorethanmen.Onereasonforthisisbiological. Oneimportantbiologicalfactorthathelpswomenlivelongeristhedifferenceinhormonesbetweenmenandwomen.2Betweentheagesofabout12and50womenproducehormonesthatareinvolvedinfertility生育能力.Thesehormonesalsohaveapositiveeffectontheheartandbloodflow.Infactwomenarelesslikelytohavehighbloodpressureortodiefromheartattacks. 3Theyhelpthebodydefenditselfagainstsomekindsofinfections.Thismeansthatwomengenerallygersicklessoftenandlessseriouslythanmen.Thecommoncoldisagoodexamplewomenonaveragegetfewercoldsthanmen. 4Scientistsarestillnotexactlysurehowinfluenceagingbuttheybelievethattheydo.Somethinkthatawoman'sbodycellshaveatendency向toagemoreslowlythanaman's.Othersthinkthataman'sbodycellshaveatendencytoagemorequickly.5 A.Howeverwomenonaveragelivelonger. B.Thebiologicalfactorplaysanimportantpart. C.Womenarealsohelpedbytheirfemalegenes. D.Thefemalehormonesalsoprotectthebodyinanotherway. E.Recentresearchseemstosupportbothofthesepossibilities. F.Thereforewomenaremorehealthythanmenandcanliveabetterlife. G.Hormonesarechemicalswhichareproducedbythebodytocontrolcariousbodyfunctions.
九章算术中有这样一个题今有甲乙二人持钱不知其数．甲得乙半而钱五十乙得甲太半而钱亦五十．问甲乙持钱各几何其意思为今有甲乙二人不知其钱包里有多少钱若乙把其一半的钱给甲则甲的数为50而甲把其的钱给乙则乙的钱数也为50问甲乙各有多少钱设甲的钱数为x乙的钱数为y则可建立方程组为
Isthereabestwaytopackclothes?Thefollowingideasareofgreathelptothosewhoarealwaysontheway. Wheretostart? 1Onceyouseehowmuchyoulayinfrontofyoubebraveandreduceaboutathird.Becausethetruthislikeyourwardrobeyouneverseemtouseasmuchasyoutake. Howtodealwithclothing? Startwithyourshoes.Putunderwearorsocksinsidethemtoholdtheshapeofyourshoes.Thusyoucanmakeuseofeverysquareinchofspace.Onceyourshoesarefirmlyinplacefillsmallgapswithverysoftitems.2 Layoutthefirstclotheswithoneendinsidethesuitcaseandtheotherenddroppingovertheedge.Putthenextclothesontopofthisbutplacethemtheotherwayaround.3Inthiswayyou'llgetanotherflatlayersoonFinallyonebyonefoldtheclothesbackin. Wheretoputnon—clothing? 4Theseawkwardshapeditemsaredifficulttopack.You'dbetterputthemtowardsthemiddlegivemaximumprotection.Remember.todoublebagyourtoiletrieskit洗漱袋toavoidspottingyourclothes. Toptips: Ifyoutakeabeltslipthemalongtheinsideofyourcase.5Thatwilltakemorespace.Nextusethehardshapeofthecasetoofferprotection.Leaveyourtoiletrieskitinyoursuitcasewhenyoureturnhome.It'sreadyforthenexttimeyoutravel. A.Don'trollbeltsup. B.Besuretoputawaysocks. C.Thisideawillcreateaflatfirstlayer. D.Andthencontinuelayingotherclothes. E.Thatwillmakethejobawholeloteasier. F.Layeverythingyouwanttotakewithyouonthebed. G.Non—clothingitemsarethingslikebookstoothbrushesandcameras.
Findingamountaingoatrestinghighonacliff悬崖mightthrillmanyofthemillionsoftouristswhovisitWyoming'sGrandTetonNationalParkeveryyearbutparkofficialssayitmightbetimeforthebeardedanimalstogo. TheproblemaccordingtotheparkisthatGrandTeton's100orsomountaingoatsthreatenabout80bighornsheep.Thebighornsheepnumberedasmanyas125justafewyearsago.Thestronggoatsspreaddiseaseandcompetewithbighornsheepforfood.Unlikesmall—sizedbighornsheepGrandTeton'smountaingoatsaren'tnativetothepark.Theywereintroducedtotheparkinthe1960s. GrandTetonspokeswomanDeniseGermannsaidWe'vegotamanagementresponsibilitytoprotectthenativespecies.Afterhearingfromthepublicontheproposal建议inJanuaryparkofficialsexpecttodecideassoonasmid—Februaryonwhattodoaboutthemountaingoats. Thegoatsarereproducingrapidly.Nowmightbethebesttimetoreducetheanimalsbeforethey'retoomanytobringundercontrolaccordingtotheParkService. Onewildlifebiologistwhostudiesbighornsheeppraisedtheproposal.Mountaingoats'originalhabitatisnowhereclosetowherethey'vebeenintroducedintheU.S.toprovidehuntingopportunitiessaidRobRoyRameyIIwithNederlandColorado—basedWildlifeScienceInternationalInc. WildlifemanagersshouldgetridofmountaingoatsnotonlyinGrandTetonbutelsewheretohelpstrugglingbighornsheepRameysaid.UnfortunatelystatewildlifeagenciessellnonnativewildlifeviewingopportunitiestothepublicRameysaid.Thisisnotazoointhewilderness.Itshouldreallybefornativewildlife. 1Whatcanbelearntaboutthebighornsheepinthepark? A.Theirsizeishuge. B.Theirnumberisdecreasing. C.Theyarrivedinthe1960s. D.Theythreatenlocalspecies. 2Howdidthepublichelpparkofficialsprotectthebighornsheep? A.Byprovidingsuggestions. B.Bydrivingawaymountaingoats. C.Byvolunteeringinthepark. D.BytakingoverGrandTetonNationalPark. 3WhatisGermann'sattitudetowardsthebighornsheep? A.Curious. B.Proud. C.Surprised. D.Concerned. 4Whatwasthepurposeofbringinginmountaingoatsinthebeginning? A.Toofferhuntingchances. B.Tosellnonnativewildlife. C.Tosatisfywildlifemanagers. D.Toincreasediversitiesofsheep.
2019OscarsAcademyAwardNominees提名forBestPicture BlackPanther Type:Adventure RunningTime:134min. ReleaseDate:February162018 Currentrank:★★★★ Director:RyanCoogler Actors:ChadwickBosemanMichaelB.Jordan WithhisfatherhavingdiedinCaptainAmerica:CivilWarT'ChallaisthenewruleroftheadvancedkingdomofWakanda.Asthekingwheneverachallengerforthecrownannounceshisintentionshemustgiveuphispowersandtakethemoninaphysicalchallenge. TheFavorite Type:Drama RunningTime:120min. ReleaseDate:November302018 Currentrank:★★★ Director:YorgosLanthimos Actors:EmmaStoneRachelWeisz Intheearly18thcenturywithEnglandandFranceatwarafragileQueenAnneoccupiesthethroneasherclosefriendLadySarahChurchillgovernsthecountryinhersteadwhiletendingtoAnne'sillhealthandchangeabletemper. GreenBook Type:Drama RunningTime:130min. ReleaseDate:November212018 Currentrank:★★★★★ Director:PeterFarrelly Actors:ViggoMortensenMahershalaAli TonyLipanuneducatedItalian—Americanwho'sknownforusinghisfiststogethiswayishiredtodriveworld—classfamouspianistDonShirleyonaconcerttourfromManhattantotheDeepSouth.TheymustrelyontheNegroMotoristGreenBooktoguidethemtothefewsettlementsthatwerethensafeforblacks. AStarisBorn Type:Musical RunningTime:135min. ReleaseDate:October52018 Currentrank:★★★★ Direct:BradleyCooper Actors:BradleyCooperLadyGaga WhencountrymusicstarJacksonMainestopsatabarforadrinkafteraconcerthe'sbothentertainedandattractedbyyoungnightclubsingerAlly.Hediscoversthatshewritessongsaswellasbeingatalentedsingerbuthasn'thadabreakbecauseofherlooks. 1Whichfilmistheleastpopularamongaudience? A.BlackPanther. B.TheFavorite. C.GreenBook. D.AStarisBorn. 2Thefilmabouttherightsofblackpeoplebelongsto. A.adventure B.musical C.drama D.comedy 3Whoworksasadirectorandactor? A.RyanCoogler. B.YorgosLanthimos. C.PeterFarrelly. D.BradleyCooper.
如图在平行四边形ABCD中点E在边BC上连结AEEM⊥AE垂足为E交CD于点MAF⊥BC垂足为FBH⊥AE垂足为H交AF于点N点P是AD上一点连接CP． 1若DP＝2AP＝4CP＝CD＝5求△ACD的面积． 2若AE＝BNAN＝CE求证AD＝CM+2CE．
每年夏季全国各地总有未成年人因溺水而丧失生命令人痛心疾首．今年某校为确保学生安全开展了“远离溺水•珍爱生命”的防溺水安全知识竞赛．现从该校七八年级中各随机抽取10名学生的竞赛成绩百分制进行整理描述和分析成绩得分用x表示共分成四组A．80≤x＜85B．85≤x＜90C．90≤x＜95D．95≤x≤100下面给出了部分信息 七年级10名学生的竞赛成绩是998099869996901008982 八年级10名学生的竞赛成绩在C组中的数据是949094 七八年级抽取的学生竞赛成绩统计表 根据以上信息解答下列问题 1直接写出上述图表中abc的值 2根据以上数据你认为该校七八年级中哪个年级学生掌握防溺水安全知识较好请说明理由一条理由即可 3该校七八年级共720人参加了此次竞赛活动估计参加此次竞赛活动成绩优秀x≥90的学生人数是多少
如图在平面直角坐标系中矩形ABCD的顶点AD分别在x轴y轴上对角线BD∥x轴反比例函数y＝k＞0x＞0的图象经过矩形对角线的交点E．若点A20D04则k的值为
计算 1x+y2-y2x+y 2a+÷
ISMisalargecompanyinSt.LouisMissouributthetopleadersarenotsatisfiedwiththeperformanceofitsstaff.Onedaynottoolongagotheemployeesreturnedfromtheirlunchbreakandweregreetedwithasignonthefrontdoor.Thesignsaid1Weinviteyoutojointhefuneralintheroomthathasbeenpreparedinthegym. Atfirsteveryonewassadtohearthatoneoftheircolleagueshaddiedbutafterawhiletheystartedgettingcuriousaboutwhothispersonmightbe.Theexcitementgrewastheemployeesarrivedatthegymtopaytheirlastrespects.Everyonewondered2Wellatleasthe'snolongerhere! Onebyonetheemployeesgotclosertothecoffinandwhentheylookedinsideittheysuddenlybecamespeechless.Theystoodoverthecoffinshockedandinsilenceasifsomeonehadtouchedthedeepestpartoftheirsoul.3TherewasalsoasignnexttothemirrorthatsaidThereisonlyonepersonwhoiscapabletosetlimitstoyourgrowthitisYOU. Youaretheonlypersonwhocanrevolutionizeyourlife. 4 Youaretheonlypersonwhocaninfluenceyourhappinessyourrealizationandyoursuccess. Yourlifedoesnotchangewhenyourbosschangeswhenyourfriendschangewhenyourparentschangewhenyourpartnerchangeswhenyourcompanychanges. YourlifechangeswhenYOUchangewhenyougobeyondyourlimitingbeliefs5 A.Therewasamirrorinsidethecoffineveryonecouldseethepersonwhopassedaway B.Whoisthepersonthatpassedaway? C.whenyourealizethatyouaretheonlyoneresponsibleforyourlife. D.Amirrorinsidethecoffineveryonewholookedinsideitcouldseehimself E.Yesterdaythepersonwhohasbeenlimitingyourgrowthinthiscompanypassedaway. F.Youaretheonlypersonwhocanhelpyourself G.Whoisthispersonthatwaslimitingyourprogress?
Ask9﹣year﹣oldAnniewhattheworstthingwasthateverhappenedinherhouselastyearshewon'ttellyouthatitwasherparentsdivorcingalthoughtheydid.NowhatAnnieremembersmostarethehorriblefightsleadinguptotheannouncementaboutthedivorcewhichwasasturnedoutanddespiteherparentsanxietyabouttellinghernotthatbigofadeal.IalreadyknewtheywerenotgettingalongwellAnniesaysEverynightafterIwenttobedIwouldhearmyparentsfighting.Itmademereallyunhappy.Whentheyfinallydecidedtogetadivorceallthatstopped. Annie'sexperienceismorecommonthanyoumightthinkandthereisagreatdealofevidencetosuggestthatstayingtogetherforthesakeofthechildrenisnotallit'scrackeduptobeandmaydomoreharmthangood.AccordingtopsychologistLynnMartingdalehearingtheirparentsargueisoftenmorestressfulforchildrenthanseparationanddivorceandifyouthinkthatyourchildrendon'tknowthatthere'stroubleinfamilythenyou'rekiddingyourself.Thehomelifeofchildrenwhoseparentshaveanunhappymarriageisoftenfarfromidealandwhat'sworseparentswillcompoundtheproblembytakingtheirunhappinessoutonthechildren. TheCenterforMovingForwardconductedastudyin2014inwhichtheyfollowed25familieswhoseparentshadbeeninmarriagecounseling.Aftertrackingthesefamiliesfor5yearstheyfoundthatthechildrenoftheparentswhohadeventuallygottendivorcedwerenotworseoffthanthechildrenofthosewhohadremainedtogetherandinsomecaseshadfaredbetter.Thestudytookintoconsiderationsocialandthechildren'sgeneralsenseofwell﹣being. 1WhywasAnniereallyunhappyaccordingtoparagraph1? A.Herparentsfoughteverynight B.Herparentsfinallygotdivorced C.Herparentsdecidedtoabandonher D.Herparentsgotalongbadlywithher. 2WhichstatementmaypsychologistLynnMartingdaleagreewith? A.Separationanddivorcewillhurtthechildrenmost. B.Keepinganunhappymarriagehurtschildrenmore C.Childrencantunderstandtheirparents'marriagewell D.Childrencan'tfeeltheunhappinessfromtheirparents 3What'sthefunctionofthelastparagraphinthepassage? A.Togiveanexampleofdivorce B.TosupportAnnie'scorrectanswer C.Tofurthercleartheauthor'sviewpoint D.Tohighlighttheimportanceofthestudy 4Whatisthebesttitleforthepassage? A.DivorceIsGoodforChildren B.DivorceIsNottheWorstThing C.FightingIsOftenStressful D.StayingTogetherIsforChildrenOnly
Thegiantpanda1lovebypeoplethroughouttheworld.Chinesescientists2recenthadachancetostudyawildfemalepandawithanewbornbaby.Shewasavery3caremother.For25dayssheneverleftherbabynoteventofindsomething4eat!Shewouldnotletanyotherpandascomenear.Shelickedthebabyconstantlytokeepitclean.Anysmellmightattractnatural5enemythatwouldtrytoeatthelittlepanda.Themotherheldthebabyinherfrontpawsmuchthewayahumandoes.6itcriedsherockeditbackandforthandgaveitlittlecomfortingpats.Themothercontinuedtocarefortheyoungpanda7morethantwoyears.Bythattimethepandanolongerneeded8itmotherforfood.Howeveritstayedwithherandlearnedaboutthewaysoftheforest.Thenaftertwoandahalfyearsthemother9drivetheyoungpandaaway.Itwastimeforhertohaveanewbaby10itwasalsotimefortheyoungpandatobeindependent.
如图所示的光现象中与小孔成像的原理相同的是
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1划掉. 修改在错的词下划一横线并在该词下面写修改后的词. 注意1.每处错误及其修改均仅限一词; 只允许修改10处多者从第11处起不计分. AsmythirdyearofhighschoollifehascomeIfeltalittlestressfulbecauseIwanttoenterabettercollegeandmyscoresworryme.Ihavemademymindtostudyharder.FirstlyIneedtoimprovingmyweaksubjects.Idecidetogoovertheimportantknowledgesandaskmyclassmatesforhelp.MygoodfriendLilyisverypatient.WithherhelpIwillmakeagreatprogress.SecondlytheexampapershandouteverytimeIwillscanmymistakesandmakesurewhattomakethemright.FinallyIwillmakefullyuseofmysparetime.Ibelievetheaimwillmakeyoustronger.
在初中阶段的函数学习中我们经历了“确定函数的表达式--利用函数图象研究其性质一一运用函数解决问题“的学习过程．在画函数图象时我们通过描点或平移的方法画出了所学的函数图象．同时我们也学习了绝对值的意义|a|＝． 结合上面经历的学习过程现在来解决下面的问题在函数y＝|kx-3|+b中当x＝2时y＝-4当x＝0时y＝-1． 1求这个函数的表达式 2在给出的平面直角坐标系中请用你喜欢的方法面出这个函数的图象并写出这个函数的一条性质 3已知函y＝x-3的图象如图所示结合你所画的函数图象直接写出不等式|kx-3|+b≤x-3的解集．
假定你是李华想邀请网友Peter下周六参观你校举办的科技小发明technologygadgets展览.请给他写封邮件内容包括: 1.具体时间和地点; 2.展览目的和内容. 注意: 1.词数100左右; 2.可以适当增加细节以使行文连贯;
计算π-30+-1＝．
Nowitwastimeforthewheattocomeintotheearsbuttheweatherwassodrythattheoldmen'shairwasturninggreyoutofconcern.Thismorning.thecloudswererollingandthethunderswere1.Itbegantopoursoon.Finallytheoldfarmerswhowerelookingforwardtotherainhappilyrantothe2ofthefieldlookedattherain﹣fedcropsandmadea3totheskyexcitedly. Astonelyingonthegroundwitnessedthisandwasveryunhappyaboutit.Itsaid4Ohitseemsthateverythingishappyforit!Itseemsthattherainwereaninternationalguestof5butwhatdiditdo?Ithasonlybeentwo6threehours.What'sthebigdeal?Nonsense!ThestonelookedathimselfandsaidYes.IhavelivedhereforthousandsofyearsIhavebeenso7andpolitebutnoonecomesto8meandthankme.Theworldisso9.It's10thatIoftenhearpeoplesaytheworldisugly. Shutup!Aninsectlistenedimpatientlyand11thestonewithafirmtoneTheraindoesnot12longandsometimesevenremainsatmostonehourbutrainismoisteningtheearthWiththe13oftherainwaterthefarmerscangetharvestand14livinghereforhundredsofthousandsofyearsinthefieldyouarecompletelyuseless.Notonlythatbutyouarestill15thispieceofrichsoil.Youarejustapieceofuseless16Whogotanygoodfromyou?Youareworthlessisn'tit?Thestonewas17andbowedhisheadin18. Similartothisstonesomepeopleliketoboast自吹自擂oftheirfortyyearsofhardlaborandtheir19tothepeople.Whatistheessentialdifferencebetweenthem?Noonehasreceivedanybenefitsfromthemandwhatisthe20oftheirexistence? 1Aflashing Bappearing C.booming Dhappening 2A.center B.edge C.bottom D.top 3A.bow B.choice C.Decision D.hit 4A.enthusiastically B.disgustingly C.enviously D.deliberately 5A.honor B.pleasure C.pity D.trouble 6A.and B.to C.or D.till 7A.hopeful B.modest C.helpful D.comfort 8A.inform B.greet C.praise D.comfort 9A.unfortunate B.unfair C.awkward D.impressive 10A.nodoubt B.nopain C.noway D.nowonder 11A.interrupted B.refused C.disturbed D.interviewed 12A.arrive B.leave C.last D.lie 13A.instructions B.leadership C.guides D.aid 14A.infavorof B.inhonorof C.inspiteof D.inmemoryof 15A.takingoff B.takingup Cholding D.holdingup 16A.carriage B.baggage C.space D.field 17A.cheerful B.hopeless C.thankful D.speechless 18A.shame B.pride C.sigh D.comfort 19A.devotion B.determination C.inspiration D.courage 20A.assessment B.value C.importance D.base
Nowadayswecanreadalmostalltruthsonsocialmediasites.Butaretheyreallyreliable?Sitessuchasthemicro﹣messagingserviceTwitterthesocialnetworkingsiteFacebookandthephoto﹣sharingappInstagrammightmisrepresenttherealworldaccordingtoastudybycomputerscientistsfromMcGillUniversityandCarnegieMellonUniversity Thescientistswarnthatgatheringinformationaboutpublicviewsandtrendsfromthesesitesisunwise.Therearestilllargepartsofthepopulationwhodonottakepartinsocialmediaactivities.Alsothere'sariskthatmanysocialmediausersareunder﹣represented.InstagramforexampleappealstoyoungeradultsinurbanareaswhilePinterestisusedmainlybyfemalesaged25to34.Andonly5percentofTwitterusersareover65yearsoldaccordingtothestudyHoweverthisisnottheonlyissueaccordingtothescientificteam.ThedesignofawebsitecaninfluencehowpeoplebehaveonlinecreatingwhattheresearcherscallInternetbiasForexamplemicro﹣bloggingsitessuchasWeibopromotepopularstories.Itsavestimeforsomebutitalsolimitsreaders'choiceofwhattheysee.IntheendmanypeopleopenthosestoriesandmakethemmorepopularButit'snotbecausetheychoosethosestories.Ratheritisbecausethecontentisrightinfrontofthem. Besidesit'spossiblethatnoteveryoneonyoursocialnetworksisreal.Theremightactuallybeafewfakeaccountsamongthem.Fakebotspretendtobehumanandareoftenincludedwhenmeasuringorpredictinghumanbehaviorsonline. ThefindingsmightbemoreimportantthanyouwouldthinksincemanysocialmediastudiesareusedtoinformandjustifydecisionsandinvestmentsamongthepublicandinindustryangovernmentsaidDerekRuthsassistantProfessoratMcGillaSchoolofComputerScience. IftheteamisrightyoumighthavetothinkcarefullythenexttimeyousayIt'strueyouknow;IreaditonWeibo. 1WhydoestheauthormentionTwitterFacebookandInstagram? A.Becausetheyarethebestsocialmediasitestoday. B.Becausetheyarenotinfavorofthecurrentstudy. C.Becausethepublicaresharingtruthsonthesesites D.D.Becauseinformationonthesesitesmaynotbereliable. 2Howisthepassagedeveloped? A.Bygivingexamples B.Bymakingcomparisons. C.Bydividingintogroups D.Byanalyzingcauseat 3Whichwordcanbestdescribetheauthor'sattitudetowardinformationonsocialmediasites? A.Ambiguous B.Favorable C.Disagreeable D.Cautious 4What'stheauthor'smainpurposeinwritingthepassage? A.Toanalyzewhyinformationgatheredfromsocialmediasitesmaynotbetrustworthy. B.Toremindreadersofthingstheyshouldwatchoutforwhenusingsocialmedia. C.Topointouttheadvantagesanddisadvantagesofsocialmedia. D.Torecommendpopularsocialnetworkingsitesforreaders
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