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和大多数物质一样，汽油也有热胀冷缩的性质，随着气温上升，汽油的密度会 （选填“变大”或“变小”），受此因素影响，在每吨汽油价格不变的情况下，夏季每升（每立方分米）汽油的价格应比冬季的价格 （...
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2.00分和大多数物质一样汽油也有热胀冷缩的性质随着气温上升汽油的密度会选填变大或变小受此因素影响
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和大多数物质一样汽油也有热胀冷缩的性质随着气温上升汽油的密度会选填变大或变小受此因素影响在每吨汽油
和大多数物质一样汽油也有热胀冷缩的性质随着气温的上升汽油的内能变大/变小汽油密度会变大/变小/不变
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2013年3月汽油价格进行了调整.和大多数物质一样汽油也有热胀冷缩的性质随着气温的上升汽油密度会__
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2分HisgrandparentsliveinShanghai.对划线部分提问 hisgrandparentslive
1分﹣﹣﹣Dearfriendsdoyoustillrememberthreeyearsago ﹣﹣﹣Torealizeourdream! A.whyyoucamehere B.whydidyoucomehere C.howyoucamehere D.howdidyoucamehere
胰岛素是治疗糖尿病的重要激素利用大肠杆菌合成的人胰岛素是第一种基因工程药物．回答下列问题 1首先应从人的细胞中提取mRNA通过反转录法获得cDNA在酶的作用下形成重组质粒再导入经过处理的大肠杆菌． 2不能直接提取人胰岛素基因导入大肠杆菌生产胰岛素从基因结构分析主要原因是． 3为大规模培养目的菌株需要从cDNA文库中获取目的基因．先把大肠杆菌涂平板再将得到的菌落“复印”到薄膜上．薄膜上的细菌原位溶菌再将其DNA变性与放射性同位素标记的人胰岛素基因杂交洗去未结合的过剩探针．应挑选图中的菌落填“Ⅰ”或“Ⅱ”进行大规模培养．这种检测方法称为技术． 4一些制药公司用转基因的酵母菌来生产人胰岛素虽然产量略低但活性比转基因大肠杆菌生产的高原因主要是．
3分Ayoungwomantraveledandstayedinahotel.Alltheroomsinthehotelweresingles单人间.Soshelivedinasingleroom. Justwhenshewasgoingtobedtherewasaknockatthedoor.Shehadnofriendsinthecity.Soshewasquitesurprisedbutstillopenedthedoor. Themanwhowasstandingatthedoorlookedalittlenervous.Oh!I'msorry.Ithoughtthiswasmyroomthemansaidandwalkedawayinahurry. Thewomancalledthepoliceatonce.Soonthemanwascaught.Hewasathief小偷!Buthowdidthethewomanknowthat Alltheroomsinthehotelweresingles.WhowouldknockathisowndoorifhewasstayingaloneOnlyathiefwoulddothis.Hewantedtoseeifanyonewasinsidebeforehebrokeintotheroom. 1Ayoungwomantraveledandstayed. A.inahotel B.inapoliceoffice C.inapark D.inherfriend'shome 2Themanlookedalittlewhenthewomanopenedthedoor. A.happy B.nervous C.mad D.relaxed 3Themanknockedatthedoorto. A.findhisfriendinthecity B.stayalone C.seeifanyonewasinside D.callthepolice
某闭花自花传粉的二倍体植物叶型有宽叶和窄叶花色有紫色和白色．现选择窄叶紫花与窄叶白花杂交F2出现宽叶紫花宽叶白花窄叶紫花窄叶白花性状分离比为279217．回答下列问题 1控制该植物叶型的基因遗传遵循定律判断的依据是． 2若F2的窄叶紫花在自然状态下生长后代的表现型及比例为． 3某纯合紫花品系中植株甲丢失了一条3号染色体．为探究控制花色的基因是否位于3号染色体上利用上述材料进行一次杂交实验3号染色体全部丢失的个体不能存活．请写出实验思路预期结果及相应结论． 实验思路． 预期结果及相应结论．
HowtoStudyEffectively Neverover﹣study Whenyouspendtoomuchtimestudyingyouwillquicklylosefocusandthetimespentinstudyingwillbecomejunktime.Youthinkyou'restudyingbutyou'rejustsittingtherere﹣readingthesamesentenceabout100timesandyou'renotgettinganywhere.1Takingbreakswillmakeyouenergeticagainandrefreshyourmind.Besidesitwillgiveyourmindsometimetotakeinwhatyouhavebeendoing. Planyourplan 2Theyactuallyplanwhattheyaregoingtodo.Theyactuallyplanthetimewhentheywillstudyandtheysetgoalsforwhatwillbeachieved.Ifyouwanttobesuccessfuldoassuccessfulpeopledo.Setaplanagoalandsticktoitwhichwillcreatearoutineandaroutineisthefirststeptowardsdevelopingahabit.3 Frontuptothetoughestworkfirst Manyofusliketodotheeasythingsfirsttobuildourconfidence.That'sfairenough.Theonlychallengewiththisapproachisthatyouuseupyourprimaryenergyatthestartofanystudyperiodandsoifyouaredealingwiththeeasypartswithyourprimaryenergyyourbatterieswillbelowwhenitcomesthetimetodealwiththehardpart.Sowhathappensthen?4Wealldoit.Wereallyshouldn'tthough.Sodevelopthehabitofgivingyourprimaryenergytothehardtasksandcompletingtheeasystufflast. 5 Dowereallyhavetoexplainthis?Justturnthemoffforanhour.Wepromisetheworldwillstillbetherewhenyoulogbackin!Don'ttextyourfriendsdon'tchatwhiledoingmemoryactivitiesdon'tmakephonecallsjustfocusonwhatyou'redoing.Evenifyoufocusonworkfor15minutesfollowedby5minutesofchattingit'sbetterthan30minutesofworkwhilealsochatting!Yougetthatright? A.Topstudentsdon'tjustrandomlysitdownandcompletework. B.Positivehabitsdecidefuturesuccess. C.Takingbreakscanmakeyougeteverywhere. D.Yougettiredandimpatientandjustgiveup. E.Theymakeplansahead. F.Insteadtakeregularbreaks. G.Getoffsocialnetworkingsitesandturnoffthephone.
PeopleinthewesternstateofCaliforniawhoareintheUnitedStatesillegallycannowrequestadriver'slicense.ThelawwentintoeffectonJanuary1.CaliforniaisnotthefirstAmericanstatewithsuchalawbutithasthelargestnumberofillegalimmigrants.Morethanamillionpeoplebegantorequestlicensesshortlyafterthenewstatelawwentintoeffect.AmongthemwasChristianAlvarado.Mr.AlvaradoenteredtheUnitedStatesfromElSalvadoreightyearsagowithoutpermissionfromtheU.S.government.Somecallsuchpeopleillegalimmigrants.Otherscallthemundocumentedimmigrants. Mr.Alvaradothinksitsoexcitingforhehasbeenwaitingforthelicenseforalongtime.Butsomeareworriedthattheirpersonalinformationwillbeusedtofindthemanddeportthem.ArmandoBotelloisaspokesmanfortheCaliforniaDepartmentofMotorVehiclesorDMV.Hesayspeopleshouldnotbeafraidforsuchinformationwillnotbeshared. ThenewlicensesarethesameaslicensesgiventocitizensexceptthattheyhavethewordsFederalLimitsApply.Thatmeansthelicensecannotbeusedtotravelonanairplaneorenterafederalbuilding.AnaGarciaworkingattheCentralAmericanResourceCentersayssomeillegalimmigrantsfearthosewordswillbeusedtoabusethem.Civilrightsgroupssaythepoliceandotherswillnot. DanSchnurapoliticalscientistattheUniversityofSouthernCaliforniasaidthatthemainargumentagainstthenewlawisthatitrewardsillegalbehavior.ButProfessorSchnurarguedthatyoungwhiteAmericansgenerallysupportimmigrationreformincludinggivingdriver'slicensestoillegalimmigrants It'ssimplybecausetheygrowupinamuchmoremulticulturalsocietythantheirparentsortheirgrandparentsdid.ProfessorSchnursayshebelievesthechangesinbeliefsaboutillegalimmigrantsthathavetakenplaceinCaliforniawillspreadthroughouttheUnitedStates. 1WhydidthenewlawmakeMr.Alvaradoexcited? A.Becausehecanrequestadriver'slicense. B.BecausehebecamealegalimmigrantofCalifornia. C.Becausehegothisdrivinglicenseasanillegalimmigrant. D.Becausealawwentintoeffectforthenewimmigrants. 2Whatisthedifferenceofthenewlicensescomparedtothosegiventocitizens? A.ThewordsFederalLimitsApplywillabuseillegalimmigrants B.Theycan'tbeusedtotravelonanairplaneorenterafederalbuilding. C.Theycanbeusedtoactagainstthepoliceandotherpeople. D.WiththewordsFederalLimitsApplyimmigrantscanenjoyspecialrights. 3What'sthepublic'sattitudetowardsthenewlawreleasedonJanuary1inCalifornia? A.supportive B.negative C.neutral D.controversial
如图表示在水肥充足温度适宜的条件下光照强度CO2浓度对大棚蔬菜光合速率的影响．回答下列问题 1限制BC段光合速率的环境因素主要是． 2增加大棚中的光照强度CO2浓度都可以提高C3还原速率进而提高光合速率．两者作用机理不同之处是． 3据图分析若要实现大棚蔬菜增产请给大棚蔬菜种植户提出科学合理的建议．
网络购物逐渐成为我们生活的一个有机部分请你用英文给ChinaDaily写一封信谈谈网络购物的利弊以及你的看法. 要点如下 1.优点方便快捷质优价廉 2.缺点质量无法保证售后态度不好 3.你的看法. 注意 1.词数100左右 2.可适当增加细节以使行文连贯 3.开头和结尾已为你写好不计入总词数. Deareditor Withthefastdevelopmentofe﹣commerceonlineshoppingisincreasinglybecominganunavoidablepartofourlife. Bestwishes! Yours LiHua.
30分WhenIwasgrowingupmoneywasalwaysanissue.Isawmyparentsworking1attheirjobsfordecadestryingtomakingenoughto2themortgage按揭贷款andfeedthreekids.Myparents3complainedandseemedhappy4wedidn'thavealot. I'mnowtheagemyparentswerewhenthey5.UnlikethemIdon'thaveanymouthsto6Idon'thaveamortgagetopayoffandfortunatelyIhaveajobwitha7salary.Fromanoutsider's8IshouldbeveryhappybutinfactI'mnot.Hereiswhy. 9isafunnything.Youthinkthatbyhavingityouwillbe10.Onceyoustartmakingsomeandrealizeit'snotmakingyouhappyyouthinkmaybeit'sbecauseyoudon'thave11.Soyoutradeyour12formoremoney. Astimegoesonyou13you'vebeenspendingmoreandmoretimeatwork.Familyandfriendswonderwhyyoudon't14themanymore.Asyouclimbupthecorporateladderyoufeelmore15andanxiousthanyoudidbefore.Youfindyoucan'tsleepwellanymore.Youfindthestressthataccompaniestheworkismorethanwhatyoucan16.Alsothecostofkeepingupwiththe17isstartingtoaddupandyou'renotmakingasmuchasyouthoughtyouwouldbe.18you'reworriedaboutlosingthefewfriendsyouhavebecauseyou'reearningmoremoneythantheyare.Co﹣workersthinkyouhaveitallandthatyoumustbehappy.Ifonlythatyouwere19.Onlyyoucan20yourhappinessmoneycan'tbuythatforyou. 1A.hard B.hardly C.occasionally D.freely 2A.makeup B.payoff C.holdup D.getover 3A.always B.even C.never D.just 4A.asif B.solongas C.incase D.eventhough 5A.startedout B.gotup C.pulledout D.gavein 6A.cure B.feed C.wash D.explore 7A.lower B.worse C.better D.less 8A.method B.approach C.aspect D.view 9A.Will B.Money C.Power D.Strength 10A.happy B.great C.cautious D.helpful 11A.much B.few C.enough D.little 12A.privacy B.health C.energy D.time 13A.remember B.agree C.realize D.apologize 14A.reward B.call C.treat D.blame 15A.stressed B.astonished C.inspired D.embarrassed 16A.forget B.account C.search D.expect 17A.lifestyle B.custom C.fashion D.manner 18A.There B.However C.Meanwhile D.Instead 19A.sudden B.natural C.false D.true 20A.hide B.control C.regret D.cover
9分InJinzhongShanxiProvincethereisagroupofpeoplewhoarebusydrawingmapsaround.Theyarenotworkersongeographybutdispatchers调度员onEmergency急救Centerofthecity. Since2007thedispatchersinthecenterhavebeendrawingmapsofthelocalareas. Adispatcher'sjobiscountedinsecondssaysLiangRuimeiadispatcherinthecenter.Shehasbeenworkinginthercentersinceitstartedin2007.Wemustanswerthephonein3secondsgetclearinformationaboutthepatientin60secondsanddispatch调度emergencymedicalworkersin3minutesatmost.Ifwesaveonesecondthepatientmayhaveabetterchancetolive. Althoughnowadaysthecenterhaselectronicmapsthedispatchersstillwalkthroughthestreetstodrawmapsbyhand. Aftermanyyears'hardworkthedispatcherskeepeverybuildingandstreetofthecityinmind.Theyevenknowwhetherornotacarcanenterthegateofabuilding.Sometimesthecallercan'ttellclearlywhereheisbutitdoesn'tmatter.Aslongashedescribesthebuildingsaroundthedispatchercandispatchemergencymedicalworkerstohim. WearetryingtobequickerthanDeathsaysLiang. 1IsLiangRuimeiadispatcherinEmergencyCenterofJinzhong 2WhendidEmergencyCenterofJinzhongstart 3TobequickerthanDeathwhatdothedispatchersinEmergencyCenterofJinzhongdo 4DoyouthinkitnecessaryfordispatcherstodrawmapsbyhandwhentheyhaveelectronicmapsWhyorwhynot
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8分 Oyster WhatisanOystercard? OysteristheeasiestwaytopayforjourneysonthebusTubetramDocklandsLightRailwayDLRLondonOvergroundandNationalRailjourneysinLondon.YoucanstoreyourtravelcardsBus&TramPassseasonticketsandcredittopayforjourneysasyougo. WheretogetanOystercard? ThereareanumberofwaysforyoutogetanOystercard •Atover3900OysterTicketstops •AtTubeandLondonOvergroundstationticketoffices •AtsomeNationalRailstations •AtLondonTravelinformationCentres •Onlineattfl.gov.uk/oyster HowtouseanOystercard? TopaythecorrectfareontheTubeDLRLondonOvergroundandNationalRailservicesyoumustalwaystouchinontheyellowOystercardreaderatthestartofyourjourneyandtouchoutattheend.Ifyoudon'tamaximumcashOysterfarewillbecharged.Whenusingthebusortramyoumustonlytouchinatthestartbutnotattheendofyourjourney. WhathappensifIdon'tvisitLondonveryoften? Don'tworry.Anypayasyougocreditonyourcardwillnotexpire过期soyoucankeepitforyournextvisitorlendittoafriend. Fares TravelingbyTubefromCentralLondonZoneltoHeathrowZone6 AdultOystersinglefare £4.20MondaytoFriday0630﹣0930and1600﹣1900 £2.70atallothertimesincludingpublicholidays Adultsinglecashfare£5.00 Forfurtherinformationvisittfl.gov.uk/fares. 1YoucangetanOystercardatthefollowingplacesEXCEPT. A.onthewebsite B.atanOysterTicketstop C.atapostoffice D.ataTubestation 2WhichofthefollowingisTRUEaboutOystercards? A.Theyarelimitedinusetotheownersthemselves. B.OnNationalRailservicesyoumusttouchthemonthereadertwice. C.Theyarenotsuitableforthosewhodon'tvisitLondonoften. D.OystercardTubefarescostmoreonpublicholidaysthanonweekdays. 3IfapersonwithanOystercardtakesthe7o'clockTubefromCentralLondontoHeathrowforaweeknopublicholidayinbetweenheshouldpay. A.£18.90 B.£29.40 C.£21.90 D.£26.40 4Thepassageisprobablytakenfroma. A.magazine B.travelbrochure旅游手册 C.textbook D.novel
关于生物学实验的叙述下列错误的是
16分Irecentlyturned30.ThinkingbackwhatI'veexperiencedItooksometimetowritemyselfsomeadvice. Trust Evenifitkillsyourrelationship.Evenifyouloseyourfriends.Evenifitmeansyouendupgettinghurt.1peopleeveniftheygiveyouareasonnotto. Butdon'tbetoonaive幼稚.Somepeopleareouttohurtyou. People Peoplearethebestand2thingthatwillhappentoyou.Somewillhelpyougofurtherandfaster.Otherswillpullyoudowntotheirlevelandmakeyoulose. MostareOK.Manyareaverage.Someareexcellent.Youdon'tneedalotofpeopleorfriendsaroundyou.Youneedamazingpeoplewhohelpyoujust3youhelpthem.Onlyafewpeoplewillchangeyourlifeforever.Find4. Valuetime Don'twastetimeonpeoplewhocheatyou. Valueotherpeople's5.Don'tbelate.Thatmeansthatifyou'relateyoudon'tcareaboutthemortheirtime.Andthatalsomeansyouthinkyou'reworthmoreandtherefore因此keepthem6.Somepeoplewilltellyouthatit'sOKtobelate.It'snot. Fail Fail.Failalot.Failoften.Failinmakingfriends.Failinwork.7pleasedon'tloseyourheart!Learnalesson. Ifyoudon'tlearnsomethingwhenyoufailthenallyou'vedoneisfailed.Ifyoulearnsomethingthenyou'vegrown.Everytimeyougrowandfailandlearnyoubecomebetteratfindingoutthewayto8.
8分Imagineaworldwithnomoreanimalsnoelephantsnotigersorlions.Tosomepeoplethatthoughtistooterribleforwords.Sotheyaredoingsomethingaboutit.TiffanySoechtingisoneofthem. Beingamongwildanimals﹣feedingthemandcaringforthem﹣isallTiffanySoechtinghaswantedtodowithherlife.Andthatisexactlywhatshedoes! Soechtingisthehumanmothertothe500animalsthatliveonherfamilywildlifefarminSanAntonioTexas.Onthefarmshecaresforanimalsfromaroundtheworld.Soechtingsaysshelovesthemall.Howevertworeticulatedgiraffes网纹长颈鹿takeupaspecialplaceinherheart.Theirpopulationinthewildhasbecomesmallerby80%inthelast15years.I'msogladtogethelpfromfivewildliferesearchersthattookgiraffesuptoahigherlevel.Allourhardworkhelpsprotectgiraffeslivinginthewild. BesidesheranimalcaringSoechtingalsoholdsmonthlyclasseswheresheteachesschoolchildrenabouttheanimals. Soechtingalsoopensthefarmtothepublic.Visitorsnotonlylearnabouttheanimalstheycanalsogetclosetothem.Andtheanimalsarenotagainstthat.Forthempeoplearepartoftheirnaturalenvironment. Thefarmispartconservation保护areaparteducationalcenterandpartanimalpark.AstheanimalswalkpeacefullyaroundthegroundsitiseasyforthemtoforgetthatSanAntonioabusycityisjustafewminutesaway. 1Soechtingisthehuman‘mother'tothe500animalsshows. A.shehasalreadymarriedandhassomechildren B.theanimalsonthefarmaretakengoodcareof C.theanimalscangetalongwellwitheachother D.sheteachesschoolchildrenaboutanimalswell 2Thestructureofthepassagemaybe. A. B. C. D. 3AccordingtothepassageSoechtingis. A.confidentbutbusy B.humorousandlovely C.wisebutcareless D.kindandhard﹣working 4Thebesttitleofthepassagemaybe. A.HowtoSaveWildAnimals B.SoechingandHerWildAnimals C.TwoReticulatedGiraffes D.AWorldWithoutWildAnimals
Weallknowwhatabrainis.Adoctorwilltellyouthatthebrainistheorganofthebodyinthehead.Itcontrolsourbody'sfunctionsmovementsemotionsandthoughts.Butabraincanmeansomuchmore. Abraincanalsosimplybeasmartperson.Ifapersoniscalledbrainysheissmartandintelligent.IfafamilyhasmanychildrenbutoneofthemissupersmartyoucouldsayShe'sthebrainsinthefamily.Andifyouarethebrainsbehindsomethingyouareresponsiblefordevelopingororganizingit.ForexampleBillGatesisthebrainsbehindMicrosoft. Braintrustisagroupofexpertswhogiveadvice.WordexpertssaythephrasebraintrustbecamepopularwhenFranklinD.Rooseveltfirstranforpresidentin1932.SeveralprofessorsgavehimadviceonsocialandpoliticalissuesfacingtheU.S.Theseprofessorswerecalledhisbraintrust. Thesewaysweusethewordbrainallmakesense.Butotherwaysweusethewordarenotsoeasytounderstand.Forexampletounderstandthenextbrainexpressionyoufirstneedtoknowtheworddrain.Asaverbtodrainmeanstoremovesomethingbylettingitflowaway.Soabraindrainmaysoundlikeadiseasewherethebrainflowsouttheears.Butbraindrainiswhenacountry'smosteducatedpeopleleavetheircountriestoliveinanother.Thebrainsaresortofdrainingoutofthecountry. Howeverifpeopleareresponsibleforagreatideayoucouldsaytheybrainstormedit.Herebrainstormisnotanactofweather.Itisaprocessofthinkingcreativelyaboutacomplextopic.Forexamplebusinessleadersmayusebrainstormingtocreatenewproductsandgovernmentleadersmaybrainstormtosolveproblems. Ifpeoplearebrainwasheditdoesnotmeantheirbrainsareniceandclean.Tobrainwashmeanstomakesomeoneacceptnewbeliefsbyusingrepeatedpressureinaforcefulortrickyway.Keepinmindthatbrainwashisneverusedinapositiveway. 1WhydidRooseveltsuccessfullywintheelectionaccordingtothepassage? A.Becausewordexpertswerepopular. B.Becausehegothisbraintrust. C.Becausehewassmartatgivingadvice. D.BecausehewasthebrainsbehindAmerican. 2Accordingtothetextifyou'retheCEOofBaiDuyoucanbecalled. A.theorganoftheBaiDu B.thebraindrainofBaiDu C.thebrainsbehindtheBaiDu D.BaiDu'sbraintrust 3Whichofthefollowingexpressionisalwaysusedinanegativeway? A.Brainstorm B.Braintrust C.Brainwash D.Braindrain 4What'sthemainideaofthisarticle? A.Theoriginofthewordbrain. B.Thewordbrainanditsstories. C.Thedifferencebetweenbraintrustandbrainwashed. D.Whatisthebrain.
某种鸟为ZW型性别决定羽毛有白羽和粟羽受一对等位基因A/a控制．该鸟有白羽和粟羽两个品系每个品系均能稳定遗传．将两品系杂交正交时后代为白羽和粟羽数量相当．反交时后代全为粟羽．下列推断错误的是
假如你是新世纪高中将要毕业的高三学生李华想去香港大学HongKongUniversity学习因此你打算给该校写一封电子邮件就﹣些相关事宜进行咨询. 1.你对环境科学EnvironmentalScience很感兴趣如何才能够被该学校的相关专业录取 2.是否需要参加英语考试 3.该校的奖学金学费食宿安排和生活费用等情况. 注意1.邮件必须包含以上所有内容可适当增加细节 2.词数100左右 3.开头和结尾已经给出不记入总词数. 参考词汇食宿accommodation奖学金scholarship DearSir MynameisLiHua.IamastudentfromXinShijiSeniorHighSchool..
1分OneofthebookismissingsoIcan'tlearnthewholestory. A.copy B.page C.writer D.reader
8分Thehumanbodyisdesignedtomove.Butmodernlifestylesandofficejobsrarelygiveusthechancetomovearound.Asweknowwe'rewhilewe'reeatingwesitinthecarandwesitwhilewewatchTV.Andmanyofussitformanyhoursatwork. Newresearchshowsthatsittinglessthanthreehoursadaymightextendyourlifebytwoyears.PeterKatzmarzykascientistattheUniversityofLouisianainthesouthernUnitedStatessaysthatsittingisubiquitousinourlivesmeaningitissomethingwedoallthetimeeverywhere. HoweverMr.Katzmarzyksaysthatdoesnotmeanyoucansitfortherestofyourwakinghours.HealsosaysyoumayexerciseoftenWecan'tthrowawayphysicalactivity.It'sextremelyimportant.Wehave60yearsofresearchshowingusthat. Mr.Katzmarzykandhiscolleaguesarepartofanewgenerationofresearchersstudyinghowsittingalldayaffectslengthoflife.Studiesthathaveassessedtherelationshipbetweensittingandmortality死亡率ortelevisionviewingandmortalityareveryrare.There'sonlybeenafewofthemactuallyfiveorsixnowinthelastfourorfiveyears.Theyfoundthatcuttingtelevisiontimetolessthantwohoursadaycouldaddone﹣pointfouryearstolife. Luckilychangeisalreadycomingtosomeofficesespeciallyinthedesignofdesks.Astandingdeskletspeoplestandwhiletheywork.Anothernewdesigniscalledthetreadmilldesk.Atreadmillisanexercisemachinethatletsyouwalkinoneplace.EvensomeU.S.schoolsarebeginningtoexperimentwithdesksthatarepartbicycletokeepchildrenmoving.That'soneofthestrategiesthatmanycompaniesareusingnow. Mr.Katzmarzykalsosaysstudyingthisproblemhasinspiredhisteamtomakeafewchangesintheirownlives. 1Theunderlinedwordubiquitousisclosestinmeaningto. A.dangerous B.awkward C.comfortable D.common 2WhichviewagreeswiththeopinionofMr.Katzmarzyk? A.Sittingtoolongmayhelpincreaseone'slife. B.Exerciseisimportantanddon'tsittoolong. C.WatchingTVisbadbutcanbroadenone'shorizons. D.StoppingwatchingTVisanecessarybuthardtask. 3WhatdoesMr.KatzmarzykthinkofhisstudyinParagraph4? A.It'sarelativelynewareaofstudy. B.It'sahotsubjectstudiedbyexperts. C.It'sastudythatbeginstoolate. D.It'snotignoredbymanyexperts. 4Whyarethedesksofallkindsdesignedforthosewhositmore? A.Togivethemmorecomfort. B.Toimprovetheirworkefficiency. C.Toofferthemthechancetoexercise. D.Toseekpleasurewhileworking.
人体细胞在正常有丝分裂或减数分裂过程中可能会出现的是
LastSundayIwaitedinlinetoseemyheroJackCanifield1authoroftheSuccessPrinciples.DuringhistalkJackreachedforhiswalletpulledoutahundred﹣dollarbillandsaidWho2wantit?Theaudienceallraisedtheirhands3waittoseewhomJackwouldchoose.HoweverIrantothestageandcaughtthebill.AsI4exposetotheaudienceIwondered5Iwouldbeteasedbythem.Butmydesireforthemoneywaslouderthanany6doubtvoice.WhenIgotthebillfromhishandhesaidThat'sit!Wecan'twaitfortheopportunitiestocometous.Wemusttakeactiontoseize7wewant. UsuallyweallhaveaJackforustowaitfor.Butwejusttakeitforgrantedthatgiftsoflifearejustaroundthecornerandthateverythingwillcome8nature.Sowedon'ttry.Wejustgive9.Myadviceisthatallofusshouldtakethechancetotakeaction10nothingwillbegainedatlast.
1分Nobodyworkedthemathproblemout.Itwasoneofall. A.easier B.theeasiest C.moredifficult D.themostdifficult
1分Nextweekeachstudentintheclassasmallgiftfromtheirteachers. A.receives B.received C.willreceive D.hasreceived
有人研究某弃耕多年荒地中的一条食物链植物→田鼠→鼬．据测定植物大约能把1%的日光能转化为净同化量田鼠大约能吃掉2%的植物而鼬能捕杀大约31%的田鼠．植物田鼠鼬呼吸消耗量占各自总同化量的比例分别是15%68%93%．下列相关叙述正确的是
2分公园不远我们可以步行去.完成译句 Theparkisnotfarandwecangothere.
10分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. Manyofusfeelsomehownervouslywheneverwearetakinganimportantexam.Notonlynervousnessdoharmtostudents'healthbutdisturbstheirstudies.Soit'snecessaryforourstudentstolearntorelax.Ithinkit'sveryimportanttohavearightattitudeforexams.Examsareonlyameansofcheckinghowwehavelearned.Thereforethereisnoneedtoworrytoomuchabouttheresultoftheexams.Beforeanexammakeascientificstudyplanandkeepingapeacefulmindmusthelptoreducethepressurefromtheexam.Wecanalsorelaxourselvesbydoingsportsandlisteningtomusic.Besidesenoughsleepandbalanceddietwillworkaswell. Followmyadviceandsoyouwillenjoyyourschoollife
8分CinyeeChiuanartistfromTaiwanisalwayshappytotrysomethingnew.Heramazingworkswonlotsofprizes.Amongthem24SolarTerms节气isthemostpopular. AncientChinesedividedayearinto24partsaccordingtothechangesoftheweather.It'sthe24solarterms.Butnoteveryoneknowsthemwell.CinyeeChiuputthe24solarternsinpicturestohelppeopleunderstandthembetter. Cinyeeturnedeachsolartermintoananimal.Buttheseanimalsarenotjustanimals.Youcanalsofindseasonalfruitsvegetablesorbeautifulflowersonthem. Whenspringcomeswatergetswarmandfishstarttoswimaround.SoCinyeechosefishasasymbolofStartofSpring.AlsoshedrewspringvegetablesChinesechivesonthebackofthefish. WhiteDewfallsonaboutSept.8.Itshowsthebeginningofthecoolautumn.Therearecolorfulleavesandcoolernightsatthistimeofyear.Asthetemperaturefallswhitedew露珠isoftenseenonthegrassandtreesatnight.ForWhiteDewCinyeechosearaccoon﹣asmallanimalwiththickhair.Shedrewwhitespots小圆点ontheraccoontoshowdew.Andsheusedthedragonfruittoshowtherichcolorsinautumn. TheyoungartistreallygavetheancientChinesecultureanewlook. 1ThewritergaveexamplestoshowCinyee's24SolarTerms. A.two B.three C.four D.five 2FromParagraph5weknowthat. A.araccoonlikesfish B.StartofSpringfallsonaboutDec.8 C.WhiteDewshowstheendoftheautumn D.Cinyeeusedwhitespotstoshowdew 3AccordingtoothepassagePicturecan'tbefromCinyee's24SolarTerms. 4Thewritermainlywantstotalkabout. A.whyCinyeemadeherselfknown B.whodividedayearinto24parts C.howCinyeeshowedthe24solarterms D.whatStartofSpringandWhiteDewmean
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