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如图所示的物品中，通常情况下属于导体的是（ ）
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下列物品中通常情况下属于导体的是
铜钥匙
橡皮擦
陶瓷杯
木筷子
下列物品中通常情况下属于导体的是
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铅笔芯
陶瓷碗
空气
下列物品通常情况下属于导体的是
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下列物品中通常情况下属于导体的是
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橡胶手套
陶瓷碗
下列物品中通常情况下属于导体的是
陶瓷碗
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钢尺
塑料笔杆
下列物品中通常情况下属于导体的是
玻璃瓶
橡皮擦
钢尺
塑料笔杆
下列物品中通常情况下属于导体的是
布笔袋
铅笔芯
橡皮擦
塑料尺
下列物品中通常情况下属于导体的是
塑料尺
玻璃板
铁钉
橡胶手套
下列物品中通常情况下属于导体的是
塑料笔杆
橡胶手套
不锈钢尺
陶瓷碗
下列物品中通常情况下属于导体的是
玻璃茶杯
竹筷
瓷碗
不锈钢水杯
下列物体中通常情况下属于导体的是
玻璃
塑料
铁丝
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下列物品中通常情况下属于导体的是
陶瓷碗
食用油
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不锈钢勺
下列物品中通常情况下属于导体的是
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布手套
橡胶鞋
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下列物品中通常情况下属于导体的是
绘画橡皮
食盐水
橡胶轮胎
塑料尺
下列物品中通常情况下属于导体的是
塑料笔杆
橡胶手套
不锈钢尺
陶瓷碗
以下物品中在通常情况下属于导体的是
铜丝
橡胶棒
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橡皮
如图所示的物品中通常情况下属于导体的是
下列物品中通常情况下属于导体的是
橡胶手套
玻璃杯
塑料盆
钢尺
下列物品中通常情况下属于导体的是
玻璃杯
钢尺
陶瓷碗
塑料笔杆
下列物品中通常情况下属于导体的是
玻璃试管
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塑料笔筒
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除去下列各组物质中的少量杂质所用试剂和方法均正确的是
除去下列各物质中的少量杂质所选用的试剂方法均正确的是
1云南水资源丰富但分布不均．有些村民用地下水作为生活用水人们常用检验地下水是硬水还是软水生活中可用的方法降低水的硬度 2高铁酸钾K2FeO4是一种新型高效的多功能水处理剂．高铁酸钾受热时发生的反应为4K2FeO42R+4K2O+3O2↑则R是填化学式 3请举一例生活中节约用水的具体措施．
图示“错误操作”与图下面“可能产生的后果”不一致的是
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6分Igrewupinafamilythatatedinnertogethereveryevening.Althoughmyparentsenjoyedwinetheyrarelydrankduringtheweekandwerealwaysinmoderation节制.AsformyselfIwasn'tinterestedinalcoholicdrinksandneitherweremyhighschoolfriends. SowhenIarrivedoncampusformyfirstyearofuniversitylifeIwasabitshocked.Manydifferenteventshadbeenorganizedforthefreshmenbuttheyallhadonethingincommon﹣alcoholandplentyofit.NotwantingtobeleftoutIjoinedafewoftheevents.ButIalwaysreturnedhomeearlyfeelingdisappointed.Yourpersonalityinterestsandexperiencesdidn'tmatteratallonlyhowmanyalcoholicdrinksyoucouldabsorbbeforepassingout喝醉.ItseemedshallowtomeIwantedtogettoknowmynewclassmatesnothowfasttheycoulddownapintofbeer. GraduallyhoweverIrealizedthatrealfriendsdon'tjudgeyoubyhowmuchyoucandrinkandtherewereotherwaysofmakingfriends.IjoinedaphotographysocietytookafirstaidcourseandeveryweekendIwentcyclingwithaclassmate.IfoundthatbyengagingintheseactivitiesandsharingthefunoflearningnewskillstogetherinagroupIformedmuchstrongerbondswithmynewfriendsthaneventhestrongestalcoholicdrinkscouldencourage. AnothervaluablelessonIlearnedisthatit'sperfectlyokaytosayNoifyoudon'twanttodrink.HoweverinmanyWesternsocietiesespeciallytheUKbingedrinking狂喝hasbecomethenorm.Manypeoplewhodrinkdon'tnecessarilywanttobuttheygiveintothepeerpressure同伴压力﹣they'reafraidtosayNo. 1Whatshockedtheauthorwhenheentereduniversity? A.Thestrangecampus. B.Thepopularityofalcohol. C.Thedrunkenclassmates. D.Thelimitedactivities. 2Whydidtheauthorreturnhomeearlyfromtheeventsatfirst? A.Hewasn'tgoodatdrinking. B.Hehadnofamiliarclassmates. C.Hehatedthewaypeoplegotalong. D.Hewasleftoutbytheorganizers. 3Howdidtheauthorfinallymakerealfriendsatuniversity? A.BysayingNotoalcoholicdrinks. B.Bystayingawayfromgroupactivities. C.Bygivingintothepeerpressure. D.Byjoiningpeoplewithcommoninterests.
几种常见物质的pH范围如表其中酸性最强的是
10分 HowtomakeQuickDecisionsForYourLife Wemakedecisionseveryday.1Whenitcomestomakingdecisionschoosingtherightonecanattimesbestressfulespeciallyifthedecisionmustbemadequickly.Indecisionoftenweighsusdownbuttherearesomeusefultipsformakingquickdecisionsmoreeasily. 2Sometimesthekeytomakingaquickdecisioncomesdowntoplanningaheadoftimeforjustsuchanoccasion.Weallknowwe'regoingtocometoanimportantdecision﹣makingpointsoonerorlatersohavingaplanalreadyinhandcanputourmindateasewhenthattimecomes. Overcomefear.3Whileitmayseemdifficulttoovercomethefearofmakingthewrongchoicemanyexpertsagreethatweshouldn'tbeafraidtomakethewrongdecisionevenifitseemsimportant.Thevastmajorityofwrongdecisionscanbecorrectedwhiledelayingdecisionscanoftenleadtomoreproblems. Writedownalltheadvantagesanddisadvantagesofyourdecision.Evenifyoudon'thavealltheinformationwritingdownalltheprosandcons优缺点isagoodstartingpointforfiguringoutwhattodo.Incaseswheretheresimplyisn'tenoughtimetowritethingsdownmakeamentallistinyourmind.Thinkingoftheprosandconscanhelpyouorganizeyourthoughts.4 Determinecriteria.Rememberthateverydecisionyoumakeshouldcomewithacertainlistofcriteria.5Butonceyouknowtherequirementsyou'relookingformakingadecisionwillbecomeeasier.Lookforthechoicethatsatisfiesthelistyou'vemadeandoncethatchoiceisfoundyoushouldmoveaheadwithit. A.Haveaplan. B.Thelistmaybeshortorquitelong. C.Communicateyourdecisionwithothers. D.Andthiscanalwaysleadtoaclearanswer. E.Socutoutanyoptionsthatyouknowyouwillnotchoose. F.Oftenonethingthatkeepsusfrommakingdecisionsisfear. G.Somecanbeveryimportantwhileothersarenotseriousinthelongrun.
6分TheOldiesbutGoodiesjazzbandwillperformromanticmusicforValentines'Day.Theband'srepertoire常备节目includesjazzmusicofthe1950﹣60sdomesticandoverseasfolksongsandpopsongs.ProgramsofthelatestconcertincludeMoonRiverAutumnWhisperButterflyLoversLoveStoryRosyLifeMyHeartWillGoOnandANightatMoscow'sSuburb.7:30pmFeb14ChinaNationalLibraryConcertHall33ZhongguancunNandajiHaidiandistrict010﹣6848﹣5462TheChinaNationalSymphonyOrchestrawillputonaconcertnamedRomanticEarlySpring.OntheperformancelistareTonightUnforgettableInMemoryBeautifulLegendIHopeYou'llComeBackandThisisLove.7:30pmFeb14BeijingConcertHallIXichengdistrict010﹣6605﹣7006Internationalcello大提琴masterYo﹣YoMawillperforminGuangzhou.TheGrammywinnerwhoispopularinboththeEastandWestwillplayMarkO'Connor'sAppalachiaWaltzAhmedAdnanSaygun'sPartitaandBach'sSuiteNo.1andSuiteNo.2.7pmJan26SymphonyHallXinghaiConcertHall33QingboLuErshaIsland020﹣8737﹣2222TheconcertforchildrenwillfeaturefamousRussiancomposerSergeyProkofiev'smasterpiece.PeterandtheWolf.Itisachildren'sstorywithbothmusicandtextbyProkofievspokenbyanarratoraccompaniedbytheorchestra.ChildrenwithticketstotheconcertwillalsogetfreeadmissiontotwoforumsfeaturingthemusicalandSergeyProkofiev.8pmFeb8ChamberHallXinghaiConcertHall33QingboLuErshaIsland020﹣8738﹣22231Jackisfondofpopmusicandhewouldmostprobablychoosetogoto.A.ChinaNationalLibraryConcertHallB.SymphonyHallXinghaiConcertHallC.ChamberHallXinghaiConcertHallD.BeijingConcertHall2MaryisagreatfanofBachandformoreinformationshecandial.A.010﹣6848﹣5462B.010﹣6605﹣7006C.020﹣8737﹣2222D.020﹣8738﹣22233Whatisspecialaboutthelastconcert?A.Youcanenjoydifferentkindsofmusic.B.Youcanenjoybothmusicandstory.C.Childrencanattenditfreeofcharge.D.Itwillbeperformedbyaninternationalmaster.
8分Youuseherasashouldertocryon.Shetextsyoubackwithcasualjokes.ButsheXiaoiceisonlyavirtualchat﹣bot. XiaoiceMicrosoft'slatestartificialintelligencerobotwasbrieflyreleasedin2014andreturnedtoWe﹣Chatin2015whereshebecameabighit.MillionsofyoungChinesenowexchangemessageswithherdailyTheNewYorkTimesreported.OnWe﹣ChatXiaoiceisanofficialaccount.Afterfollowingituserscanstarttext﹣basedconversationswithXiaoice. HerincrediblelearningabilitywaswhypeoplelovedtotalkwithXiaoiceLiuJinchangaresearcheratHigh﹣techResearchandDevelopmentCenterundertheMinistryofScienceandTechnologytoldChinaDaily.Apartfromherabilitytoidentifyphotosandsendemojis表情符号inconversationsXiaoicegains45percentofherknowledgefrominteractingwithusersChinaDailyreported. Chat﹣botprogramsfirstappearedinthemid﹣1960sintheUS.Drivenbytoptechcompaniestheyarebecomingsmarterandmorecommon.ForinstanceIBM'slatestartificialintelligenceprogramservedasanacademicconsultantatAustralia'sDeakinUniversityansweringstudents'questionsaboutcourseschedulesandfinancialaid.Apple'sSiriandAmazon'sAlexahavebeenusedasvoiceassistantswhocanreadnewsplaymusicandevenmakejokesfortheirusers. Theseprogramsareexpectedtomovebeyondsmart﹣phonesintotelevisionscarsandlivingrooms.TheNewYorkTimespointedout.HoweveritmaytakedecadesbeforescientistsdevelopaSamanthatheadvancedchat﹣botseeninthefictionfilmHer.InthefilmSamanthasparksaromanticrelationshipwithheruserplayedbyUSactorJoaquinPhoenix.Manyviewerswereenthusiasticaboutthisfantasyofvirtualsoulmates. 1WhatdoestheunderlinedpartinParagraphTwomean? A.Shebecameabestseller. B.Shebecameverypowerful. C.Shebecameamoneymaker. D.Shebecameverypopular. 2WhichofthefollowingcanXiaoicedo? A.Dohousework. B.Spreadmessages. C.Identifyvariousphotos. D.Readnewstoitsusers. 3Whichcompany'schat﹣botprogramcanactasanacademicconsultant? A.Microsoft. B.IBM. C.Apple. D.Amazon. 4Whatcanbelearnedfromthelastparagraph? A.Chat﹣botsmainlyrunonsmart﹣phonesnow. B.It'lltakedecadestoapplychat﹣botstocars. C.SamanthaisplayedbyaUSactorinthefilm. D.ThefilmHerdoesn'tinterestmanyaudience.
25分假定你是李华收到了美国朋友彼得寄来的最新英文小说.请你给他回邮件内容包括: 1.小说收到; 2.回赠礼物; 3.礼物意义; 4.邀请他来华. 注意: 1.词数80左右; 2.可适当增加细节以使行文连贯.
6分ForanymusiclovertheInternetcanbeanever﹣endingsourceofmusic.WenolongerneedtofillaroomwithcassettesorDVDs.Onlinemusicstoresarealltheragethesedayswithmoreandmorepeoplechoosingtobuymusiconline.We'regladtoofferyouthebestwebsites. Apple'siTunesStoreisthemostpopularmusicstoreonlinetoday.Ithassoldmorethan25billionsongs.Itisalsooneofthemostupdatedstoresonlinewitheventhelatestalbumsfindingtheirwaytoitwithinhoursoftheirrelease.Mostsongscanbepurchasedforaslittleas﹩0.99.Website:www.apple.com/iTunes/ AmazonMP3isanarguablepioneerinbringingthebesttracksatthecheapestpricestothecustomers.Thesongscanbepurchasedforascheapas﹩0.69.WhatmakesthedealevensweeteristhatthetracksyoupurchasefromthestorecanbeeasilytransferredtotheAmazonCloudDriveforfree.Website:www.amazon.com GoogleMusicnowoffersmorethan13milliontracks.WhatmakesitstandoutfromtherestofthecompetitionisthefactthatitletsyoudownloadDRM﹣free320kbpsmp3files.Itoffersfreecloudstorageforallyourpurchasesfromthestore.Thetracksusuallyrangefrom﹩0.99to﹩1.29.Themaindisadvantageisthatthestoreiscurrentlynotsupportedacrossmostoftheworld.Website:www.music.google.com E﹣Musicisapopularnameintheonlinemusicindustrywithmorethan17milliontracksonoffer.Thisisamembership﹣basedservicewhichstartsat﹩11.99permonthforupto24tracks.ItsupportsalargelibraryofDRM﹣freetracksacrossmoststyles.Theonlymajordisadvantageforthisserviceisthatitisn'tavailableinmostcountries.Website:www.emusic.com There'sanabsolutetreasuretrove无主珍宝ofmusicwaitingtobeexploredontheInternet.Allyouneedtodoisaccessoneoftheseamazingstoresandgettransportedintoanotherworld.Ifyouneedanyhelpwecanhelpyou.Foranyhelpclickhere. 1TheunderlinedpartalltherageinParagraph1probablymeans. A.verypopular B.abitexpensive C.totallyreliable D.ratherinconvenient 2Ifyouwanttobuyyourfavoritetracksatthecheapestpricesyoucanvisit. A.www.emusic.com B.www.amazon.com C.www.apple.com/i'Tunes/ D.www.music.google.com 3E﹣Musicdiffersfromotherwebsitesmentionedinthepassageinthat. A.itoffersthemostpopulartracks B.itisavailabletousersworldwide C.itisonlyintendedforitsmembers D.itcoversalltypesofmusicworldwide
10分Everyonecanbenefitfrommakinganefforttopracticegratitude感激everyday.Thefollowingthreestepscanhelpyoustartfeelingmoregratefulandappreciativeofthegoodthingsinyourlife: NoticetheGoodThingsinYourLife 1Payattentiontothesmalleverydaydetailsofyourlife﹣naturepeoplecommunitysheltercreaturecomfortslikeawarmbedoragoodmeal.Andthenstartagratitudejournal日记.Makingacommitment承诺保证towritingdowngoodthingseachdaymakesitmorelikelythatwewillnoticegoodthingsastheyhappen. EnjoytheFeelingofGratitude Therearemomentswhenyounaturallyrightthenandtherefeelfilledwithgratitude.ThesearemomentswhenyousaytoyourselfOhwowthisisamazing!orHowgreatisthis!Pause.2Letitsinkin.Enjoyyourblessingsinthemomenttheyhappen. ExpressGratitude Expressinggratitudeismorethanbeingpolite.3Showyourappreciationtosomeonewhoreallydidsomethingnice.Say:Itwasreallykindofyouto…Youdidmeabigfavorwhen…orThankyouforbeingtherewhen….4Holdthedooropenforthepersonbehindyouevenifitmeanswaitingalittlelongerthanyounormallywould. Truegratitudedoesn'tleaveyoufeelinglikeyouoweotherpeoplesomething﹣afterallifyou'vedonesomeoneafavoryouprobablydon'twantthepersontofeellikeyouexpectsomethingbackinreturn.5 A.It'saboutshowingyourheartfeltappreciation. B.Justnoticeandabsorb吸收吸入thatfeelingoftruegratitude. C.Youcanalsoexpressgratitudebydoingakindness. D.It'sallaboutfeelinggoodandcreatingacycleofgood. E.Starttonoticeandidentifythethingsyouaregratefulfor. F.Helpsomeonewithoutlettingthepersonfindoutitwasyou. G.It'samazingwhatyounoticewhenyoufocusonfeelinggrateful.
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