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可用下列图示装置制取少量乙酸乙酯(酒精灯等在图中均已略去)。 为防止a中的液体在实验时发生暴沸，在加热前应采取的措施是（）。
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信息技术教师招聘考试《填空集》真题及答案
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下列操作或者说法错误的是
除去乙酸乙酯中的少量乙酸：加入乙醇和浓硫酸，使乙酸全部转化为乙酸乙酯
除去苯中的少量苯酚：加入NaOH溶液，振荡、静置分层后，除去水层
将铜丝在酒精灯上加热后，立即伸入无水乙醇中，铜丝恢复成原来的红色
提取溶解在水中的少量碘：加入CCl
4
，振荡、静置分层后，取出有机层再分离
哈三中某化学课外学习小组利用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空①试管a中需加入浓硫
可用下列图示装置制取少量乙酸乙酯酒精灯等在图中均已略去 试管b中加有饱和Na2C
可用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空1试管a中需要加入浓硫酸冰醋酸和乙醇各2mL
可用下列图示装置制取少量乙酸乙酯酒精灯等在图中均已略去 试管a中需加入浓硫酸冰醋
2006全国Ⅱ卷可用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空1试管a中需加入浓硫酸冰醋酸
实验题8分可用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空:1试管a中需要加入浓硫酸冰醋酸和
下列图示装置和原理均正确且能达到相应实验目的的是
用装置①验证石蜡可分解
用装置②除去甲烷中混有的少量乙烯
用装登③制取乙酸乙酯
用装置④分馏石油
可用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空1试管a中需要加入浓硫酸冰醋酸和乙醇各2mL
可用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空1试管a中需要加入浓硫酸冰醋酸和乙醇各2mL
可用如图所示装置制取少量乙酸乙酯酒精灯等在图中均已略去.请填空1试管a中需加入浓硫酸冰醋酸和乙醇各2
可用下列图示装置制取少量乙酸乙酯酒精灯等在图中均已略去 实验中加热试管a的目的是
可用下列图示装置制取少量乙酸乙酯酒精灯等在图中均已略去 反应结束后振荡试管b静置
下列实验能获得成功的是
用上图所示装置，无水乙酸和乙醇共热制取乙酸乙酯
将铜丝在酒精灯上加热后，立即伸入无水乙醇中，铜丝恢复原来的红色
用乙醇从碘水中萃取碘
淀粉用酸催化水解后的溶液加入新制银氨溶液，水浴加热，可看到有银镜出现
.下列实验能获得成功的是
用如图所示装置，无水乙酸和乙醇共热制取乙酸乙酯
将铜丝在酒精灯上加热后，立即伸入无水乙醇中， 铜丝恢复原来的红色
水和乙醇的混合液，可用蒸馏的方法使其分离
淀粉用酸催化水解后的溶液加入新制银氨溶液， 水浴加热，可观察到有银镜出现
可用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空1试管a中需要加入浓硫酸冰醋酸和乙醇各2mL
哈三中某化学课外学习小组利用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空①试管a中需加入浓硫
哈三中某化学课外学习小组利用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空①试管a中需加入浓硫
可用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空⑴试管a中需加入浓硫酸冰醋酸和乙醇各2mL正
可用图示装置制取少量乙酸乙酯酒精灯等在图中均已略去请填空1试管a中需要加入浓硫酸冰醋酸和乙醇各2mL
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下表各组物质中满足下图物质一步转化关系的选项是
Fromchildhoodtooldagewealluselanguageasameansofbroadeningourknowledgeofourselvesandtheworldaboutus.Whenhumansfirst16theywerelikenewbornchildrenunabletousethis17tool.Yetoncelanguagedevelopedthepossibilitiesforhumankind’sfuture18andculturalgrowthincreased.Manylinguistsbelievethatevolutionis19forourabilitytoproduceanduselanguage.They20thatourhighlyevolvedbrainprovidesus21aninnatelanguageabilitynotfoundinlower22.Proponentsofthisinnatenesstheorysaythatour23forlanguageisinbornbutthatlanguageitselfdevelopsgradually24afunctionofthegrowthofthebrainduringchildhood.Thereforetherearecritical25timesforlanguagedevelopment.Current26oftheinnatenesstheoryaremixed;howeverevidencesupportingtheexistenceofsomeinnateabilitiesisundeniable.27moreandmoreschoolsarediscoveringthatforeignlanguagesarebesttaughtin28grades.Youngchildrenoftencanlearnseverallanguagesbybeing29tothemwhileadultshaveamuchhardertimelearninganotherlanguageoncethe30oftheirfirstlanguagehavebecomefirmlyfixed.31someaspectsoflanguageareundeniablyinnatelanguagedoesnotdevelopautomaticallyinavacuum.Childrenwhohavebeen32fromotherhumanbeingsdonotpossesslanguage.Thisdemonstratesthat33withotherhumanbeingsisnecessaryforproperlanguagedevelopment.Somelinguistsbelievethatthisisevenmorebasictohumanlanguage34thananyinnatecapacities.Thesetheoristsviewlanguageasimitativelearnedbehavior.35childrenlearnlanguagefromtheirparentsbyimitatingthem.Parentsgraduallyshapetheirchild’slanguageskillsbypositivelyreinforcingpreciseimitationsandnegativelyreinforcingimpreciseones.Ⅱ．完形填空/Cloze阅读下列短文掌握其大意然后从每小题所给的四个选项ABCD中选出最佳选项
下列与化学反应能量变化相关的叙述正确的是
Amiddle-agedmanwithalongbeardwasarrestedbythepolicefordisorderlyconductandpropertydamage.Morechargesmightheaddedlatersaidapoliceofficer.ThemanidentifiedasBillWildcheckedintotheMotelFivelastnightaboutanhouraftersunset.Tellingtheclerkthathewouldbestayingfournightshepaidcashinadvance.ShesaidthatthenearestgrocerystorewasJohn-Johnswhichwasonlytwoblocksaway.ThepolicesaidthatWildwenttoJohn-Johnsandpurchasedthreegallonsofhoneyandfourgallonsofchocolatesyrup糖浆.Thecheckeraskedhimwhattheoccasionwas.HerepliedI’mtryingtobecomeasweeterperson.Thecheckersmiledatthejoke.Wilddrovebacktothemotel.Heopenedallsevencontainersandpouredthemintothebathtub.Headdedwarmwatertothemix.Thenheplacedhisboomboxonthebathroomfloornexttothetub.Hetunedtheradiotoanoperastation.Hegotundressedhoppedintothetubandstartedsingingloudlywiththemusic.Fifteenminuteslaterthelodgersintheroomnextdoorphonedtheclerk.ShebangedonWild’sdoorbuthekeptsinging.Shephonedhisroombuthedidn’tanswer.Thenshecalledthepolicewhoarrivedquickly.Wellatleasthepaidinadvancesaidtheclerk.Thatmoneywillhelppayfortheplumber管子工.Thebathtubdrainwascompletelyclogged阻塞.Thetubremainedfullofchocolateandhoney.Youjustneverknowaboutpeoplesaidtheclerk.Heseemedsoniceandfriendly.Who’dhavethoughthewasabathtub-singingnutThepolicesaidthiswasthethirdtimethatWildhadbeenarrestedforthiskindofbehavior.PleasefillintheblankinNews2withproperwordsorphrasestocompletethesentence.Pleaseanswerwithin10words．
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmunizedfrombirthagainstmanyofthemostdangerousdiseases.Alargenumberofoncefatalillnessescannowbecuredbymoderndrugsandsurgery.Itisalmostcertainthatonedayremedieswillbefoundforthemoststubbornremainingdiseases.Theexpectationoflifehasincreasedenormously.Butthoughthepossibilityoflivingalongandhappylifeisgreaterthaneverbeforeeverydaywewitnesstheincredibleslaughterofmenwomenandchildrenontheroads.Manversusthemotorcar!Itisanever-endingbattlewhichmanislosing.Thousandsofpeopleovertheworldarekilledorhorriblykilledeachyearandwearequietlysittingbackandlettingithappen.Ithasbeenrightlysaidthatwhenamanissittingbehindasteeringwheelhiscarbecomestheextensionofhispersonality.Thereisnodoubtthatthemotorcaroftenbringsoutaman’sveryworstqualities.Peoplewhoarenormallyquietandpleasantmaybecomeunrecognizablewhentheyarebehindasteering-wheel.Theysweartheyareill-manneredandaggressivewillfulastwo-year-oldsandutterlyselfish.Alltheirhiddenfrustrationsdisappointmentsandjealousiesseemtobebroughttothesurfacebytheactofdriving.Thesurprisingthingisthatsocietysmilessobenignlyonthemotoristandseemstocondonehisbehaviour.Everythingisdoneforhisconvenience.Citiesareallowedtobecomealmostuninhabitablebecauseofheavytraffic;townsaremadeuglybyhugecarparks;thecountrysideisdesecratedbyroadnetworks;andthemassannualslaughterbecomesnothingmorethanastatistictobeconvenientlyforgotten.Itishightimeaworldcodewerecreatedtoreducethissenselesswasteofhumanlife.Withregardtodrivingthelawsofsomecountriesarenotoriouslylaxandeventhestrictestarenotstrict:enough.Acodewhichwasuniversallyacceptedcouldonlyhaveadramaticallybeneficialeffectontheaccidentrate.Hereareafewexamplesofsomeofthethingsthatmightbedone.Thedrivingtestshouldbestandardizedandmadefarmoredifficultthanitis;allthedriversshouldbemadetotakeatesteverythreeyearsorso;theageatwhichyoungpeopleareallowedtodriveanyvehicleshouldheraisedtoatleast21;allvehiclesshouldbeputthroughstringentannualtestsforsafety.Eventhesmallestamountofalcoholinthebloodcanimpairaperson’sdrivingability.Presentdrinkinganddrivinglawswheretheyexistshouldhemadmuchstricter.Maximumandminimumspeedlimitsshouldbeimposedonallroads.GovernmentsshouldlaydownsafetyspecificationsformanufacturersashasbeendoneintheUSA.Alladvertisingstressingpowerandperformanceshouldbebanned.Thesemeasuresmaysoundinordinatelyharsh.Butsurelynothingshouldbeconsideredassevereifitresultsinreducingtheannualtollofhumanlife.Afteralltheworldisforhumanbeingsnotmotorcars.Themainideaofthispassageisthat______.
Howshouldoneinvestasumofmoneyinthesedaysofinflation通货膨胀Leftinabankitwillhardlykeepitsvaluehoweverhightheinterestrateis.OnlyabravemanoraveryrichonedarestobuyandsellontheStockMarket.Todayitseemsthatoneofthebestwaystoprotectyoursavingsandevenincreaseyourwealthistobuybeautifulobjectsfromthepast.HereIamgoingtooffersomeadviceoncollectingantiqueclockswhichIpersonallyconsiderareamongthemostinterestingofantiques.Isometimeswonderwhatabeingfromanotherplanetmightreportbackaboutourwayoflife.TheplanetEarthisruledbyamysteriouscreaturethatsitsorstandsinaroomandmakesastrangetickingsound.Ithasafacewithtwelveblackmarksandtwohands.Mencandonothingwithoutitspermissionanditfastensitsyoungroundpeople’swristssothateverywheremengotheyarestillunderitscontrol.ThiscreatureistherealmasterofEarthandmenareitsslaves.Whetherornotweareslavesoftimetodaydependsonourcultureandpersonalitybutitisbelievedthatmanyyearsagokingskeptspecialslavestotellthetime.Certainmenwereverycleveratmeasuringthetimeofdayaccordingtothebeatingoftheirownhearts.Theyweremadetostandinafixedplaceandeveryhourorsowouldshoutthetime.Soitseemsthatthefirstclockswerehumanbeings.Howevermenquicklyfoundmoreconvenientandreliablewaysoftellingthetime.Theylearnedtousetheshadowscastbythesun.Theymarkedthehoursoncandlesusedsandinhourglassesandinventedwater-clocks.Indeedanyseriousstudentofantiquesshouldspendasmuchtimeaspossiblevisitingpalacesstatelyhomesandmuseumstoseesomeofthefinestexamplesofclocksfromthepast.Antiqueclockscouldbeveryexpensivebutoneofthejoysofcollectingclocksisthatitisstillpossibletofindquitecheaponesforyourownhome.AfterallifyouaregoingtoberuledbythetimewhynotinvestinairantiqueclockandperhapsmakeafutureprofitTheunderlinedphrasestatelyhomesinParagraph4means______.
Amiddle-agedmanwithalongbeardwasarrestedbythepolicefordisorderlyconductandpropertydamage.Morechargesmightheaddedlatersaidapoliceofficer.ThemanidentifiedasBillWildcheckedintotheMotelFivelastnightaboutanhouraftersunset.Tellingtheclerkthathewouldbestayingfournightshepaidcashinadvance.ShesaidthatthenearestgrocerystorewasJohn-Johnswhichwasonlytwoblocksaway.ThepolicesaidthatWildwenttoJohn-Johnsandpurchasedthreegallonsofhoneyandfourgallonsofchocolatesyrup糖浆.Thecheckeraskedhimwhattheoccasionwas.HerepliedI’mtryingtobecomeasweeterperson.Thecheckersmiledatthejoke.Wilddrovebacktothemotel.Heopenedallsevencontainersandpouredthemintothebathtub.Headdedwarmwatertothemix.Thenheplacedhisboomboxonthebathroomfloornexttothetub.Hetunedtheradiotoanoperastation.Hegotundressedhoppedintothetubandstartedsingingloudlywiththemusic.Fifteenminuteslaterthelodgersintheroomnextdoorphonedtheclerk.ShebangedonWild’sdoorbuthekeptsinging.Shephonedhisroombuthedidn’tanswer.Thenshecalledthepolicewhoarrivedquickly.Wellatleasthepaidinadvancesaidtheclerk.Thatmoneywillhelppayfortheplumber管子工.Thebathtubdrainwascompletelyclogged阻塞.Thetubremainedfullofchocolateandhoney.Youjustneverknowaboutpeoplesaidtheclerk.Heseemedsoniceandfriendly.Who’dhavethoughthewasabathtub-singingnutThepolicesaidthiswasthethirdtimethatWildhadbeenarrestedforthiskindofbehavior.TranslatetheunderlinedsentenceintoChinese．
短周期元素形成的常见非金属固体单质A与常见金属单质B在加热条件下反应生成化合物CC与水反应生成白色沉淀D和气体ED既能溶于强酸也能溶于强碱E在足量空气中燃烧产生刺激性气体GG在大气中能导致酸雨的形成E被足量氢氧化钠溶液吸收得到无色溶液F溶液F在空气中长期放置发生反应生成物之一为HH与过氧化钠的结构和化学性质相似其溶液显黄色请回答下列问题B与氢氧化钠溶液反应的化学方程式为
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmunizedfrombirthagainstmanyofthemostdangerousdiseases.Alargenumberofoncefatalillnessescannowbecuredbymoderndrugsandsurgery.Itisalmostcertainthatonedayremedieswillbefoundforthemoststubbornremainingdiseases.Theexpectationoflifehasincreasedenormously.Butthoughthepossibilityoflivingalongandhappylifeisgreaterthaneverbeforeeverydaywewitnesstheincredibleslaughterofmenwomenandchildrenontheroads.Manversusthemotorcar!Itisanever-endingbattlewhichmanislosing.Thousandsofpeopleovertheworldarekilledorhorriblykilledeachyearandwearequietlysittingbackandlettingithappen.Ithasbeenrightlysaidthatwhenamanissittingbehindasteeringwheelhiscarbecomestheextensionofhispersonality.Thereisnodoubtthatthemotorcaroftenbringsoutaman’sveryworstqualities.Peoplewhoarenormallyquietandpleasantmaybecomeunrecognizablewhentheyarebehindasteering-wheel.Theysweartheyareill-manneredandaggressivewillfulastwo-year-oldsandutterlyselfish.Alltheirhiddenfrustrationsdisappointmentsandjealousiesseemtobebroughttothesurfacebytheactofdriving.Thesurprisingthingisthatsocietysmilessobenignlyonthemotoristandseemstocondonehisbehaviour.Everythingisdoneforhisconvenience.Citiesareallowedtobecomealmostuninhabitablebecauseofheavytraffic;townsaremadeuglybyhugecarparks;thecountrysideisdesecratedbyroadnetworks;andthemassannualslaughterbecomesnothingmorethanastatistictobeconvenientlyforgotten.Itishightimeaworldcodewerecreatedtoreducethissenselesswasteofhumanlife.Withregardtodrivingthelawsofsomecountriesarenotoriouslylaxandeventhestrictestarenotstrict:enough.Acodewhichwasuniversallyacceptedcouldonlyhaveadramaticallybeneficialeffectontheaccidentrate.Hereareafewexamplesofsomeofthethingsthatmightbedone.Thedrivingtestshouldbestandardizedandmadefarmoredifficultthanitis;allthedriversshouldbemadetotakeatesteverythreeyearsorso;theageatwhichyoungpeopleareallowedtodriveanyvehicleshouldheraisedtoatleast21;allvehiclesshouldbeputthroughstringentannualtestsforsafety.Eventhesmallestamountofalcoholinthebloodcanimpairaperson’sdrivingability.Presentdrinkinganddrivinglawswheretheyexistshouldhemadmuchstricter.Maximumandminimumspeedlimitsshouldbeimposedonallroads.GovernmentsshouldlaydownsafetyspecificationsformanufacturersashasbeendoneintheUSA.Alladvertisingstressingpowerandperformanceshouldbebanned.Thesemeasuresmaysoundinordinatelyharsh.Butsurelynothingshouldbeconsideredassevereifitresultsinreducingtheannualtollofhumanlife.Afteralltheworldisforhumanbeingsnotmotorcars.Whydoestheauthorsaythathisearbecomestheextensionofhispersonality
Howshouldoneinvestasumofmoneyinthesedaysofinflation通货膨胀Leftinabankitwillhardlykeepitsvaluehoweverhightheinterestrateis.OnlyabravemanoraveryrichonedarestobuyandsellontheStockMarket.Todayitseemsthatoneofthebestwaystoprotectyoursavingsandevenincreaseyourwealthistobuybeautifulobjectsfromthepast.HereIamgoingtooffersomeadviceoncollectingantiqueclockswhichIpersonallyconsiderareamongthemostinterestingofantiques.Isometimeswonderwhatabeingfromanotherplanetmightreportbackaboutourwayoflife.TheplanetEarthisruledbyamysteriouscreaturethatsitsorstandsinaroomandmakesastrangetickingsound.Ithasafacewithtwelveblackmarksandtwohands.Mencandonothingwithoutitspermissionanditfastensitsyoungroundpeople’swristssothateverywheremengotheyarestillunderitscontrol.ThiscreatureistherealmasterofEarthandmenareitsslaves.Whetherornotweareslavesoftimetodaydependsonourcultureandpersonalitybutitisbelievedthatmanyyearsagokingskeptspecialslavestotellthetime.Certainmenwereverycleveratmeasuringthetimeofdayaccordingtothebeatingoftheirownhearts.Theyweremadetostandinafixedplaceandeveryhourorsowouldshoutthetime.Soitseemsthatthefirstclockswerehumanbeings.Howevermenquicklyfoundmoreconvenientandreliablewaysoftellingthetime.Theylearnedtousetheshadowscastbythesun.Theymarkedthehoursoncandlesusedsandinhourglassesandinventedwater-clocks.Indeedanyseriousstudentofantiquesshouldspendasmuchtimeaspossiblevisitingpalacesstatelyhomesandmuseumstoseesomeofthefinestexamplesofclocksfromthepast.Antiqueclockscouldbeveryexpensivebutoneofthejoysofcollectingclocksisthatitisstillpossibletofindquitecheaponesforyourownhome.AfterallifyouaregoingtoberuledbythetimewhynotinvestinairantiqueclockandperhapsmakeafutureprofitByquoting引用theremarkofabeingfromanotherplanettheauthorintendsto______.
人口质量制约着教育事业的和
泡沫灭火剂包括Al2SO4溶液约1mol/LNaHCO3溶液约1mol/L及发泡剂使用时发生的化学反应方程式是Al2SO43溶液和NaHCO3溶液的体积比约是若用等体积等浓度的Na2CO3代替NaHCO3液在使用时喷不出泡沫这是因为泡沫灭火器内的玻璃筒里盛硫酸铝溶液铁筒里盛碳酸氢钠溶液不能把硫酸铝溶液盛在铁筒里的原因是
IamSergeyBrin!IwasborninMoscow.In1979whenIwas5myfamilyimmigratedtotheU.S.A.California.Irememberthatonmy9thbirthdayIgotmyfirstcomputerCommodore64.LaterIgraduatedwithhonorsintheUniversityofMarylandinMathematicsandIT.Themainfieldofmyscienceresearchwasthetechnologiesusedtocollectdatafromunsystematicsourcesaswellaslargequantitiesoftextsandsciencedata.IwastheauthorofdozensofarticlesinleadingAmericanacademicmagazines.Thegreatesteventinmylifehappenedwhenin1998Iwaspreparingforthedefense论文答辩ofmyDoctor’sdegreeinStanfordUniversity.TherethefatemadememeetLarryPage—ayoungcomputergenius.Larrybelongedtotheintellectual知识分子society.LarryandIquicklybecamefriendswhenweworkedtogether.WeweresearchingdayandnightontheInternet.Wewerefindingalotofinformationbutwiththefeelingwestillcouldn’tfindenoughofwhatwewerelookingfor.Naturallytheideaforasearchenginethatwouldallowspecificinformationtobefoundintheendlesspoolofdatawasbornlikeitcametous.Itwasn’tourplansbutwegaveuptheeducationattheuniversity.Youknowthenextpartmaybe—wemanagedtoturnanordinarygarageinMeploParkCaliforniatheU.S.A.intoourfirstofficeinwhichGooglewasborn.WithexcitementwetypedthenameofthethingwhichwecreatedwithloveonSeptember14th1998—www.Google.com.Nowafterthoseyearsweboughtthisgarage.Asasymbolitwillalwaysremindusthateverythingispossible.Whichofthefollowingwouldbethebesttitleforthispassage
短周期元素形成的常见非金属固体单质A与常见金属单质B在加热条件下反应生成化合物CC与水反应生成白色沉淀D和气体ED既能溶于强酸也能溶于强碱E在足量空气中燃烧产生刺激性气体GG在大气中能导致酸雨的形成E被足量氢氧化钠溶液吸收得到无色溶液F溶液F在空气中长期放置发生反应生成物之一为HH与过氧化钠的结构和化学性质相似其溶液显黄色 请回答下列问题 溶液F在空气中长期放置生成H的化学方程式为
班主任以教育目的为指导思想以学生守则为基本依据对学生一个学期内在学习劳动生活品行等方面进行小结与评价这项工作是
下列哪些做法有利于发挥学生的主体性
IamSergeyBrin!IwasborninMoscow.In1979whenIwas5myfamilyimmigratedtotheU.S.A.California.Irememberthatonmy9thbirthdayIgotmyfirstcomputerCommodore64.LaterIgraduatedwithhonorsintheUniversityofMarylandinMathematicsandIT.Themainfieldofmyscienceresearchwasthetechnologiesusedtocollectdatafromunsystematicsourcesaswellaslargequantitiesoftextsandsciencedata.IwastheauthorofdozensofarticlesinleadingAmericanacademicmagazines.Thegreatesteventinmylifehappenedwhenin1998Iwaspreparingforthedefense论文答辩ofmyDoctor’sdegreeinStanfordUniversity.TherethefatemadememeetLarryPage—ayoungcomputergenius.Larrybelongedtotheintellectual知识分子society.LarryandIquicklybecamefriendswhenweworkedtogether.WeweresearchingdayandnightontheInternet.Wewerefindingalotofinformationbutwiththefeelingwestillcouldn’tfindenoughofwhatwewerelookingfor.Naturallytheideaforasearchenginethatwouldallowspecificinformationtobefoundintheendlesspoolofdatawasbornlikeitcametous.Itwasn’tourplansbutwegaveuptheeducationattheuniversity.Youknowthenextpartmaybe—wemanagedtoturnanordinarygarageinMeploParkCaliforniatheU.S.A.intoourfirstofficeinwhichGooglewasborn.WithexcitementwetypedthenameofthethingwhichwecreatedwithloveonSeptember14th1998—www.Google.com.Nowafterthoseyearsweboughtthisgarage.Asasymbolitwillalwaysremindusthateverythingispossible.FromthepassageweknowthatLarryPage______.
终身教育主张教育是一个的过程
Theevidenceforharmonymaynotbeobviousinsomefamilies.Butitseemsthatfouroutoffiveyoungpeoplenowgetonwiththeirparentswhichistheoppositeofthepopularly-heldimage形象ofunhappyteenagerslockedintheirroomafterendlessfamilyquarrels.Animportantnewstudyintoteenageattitudessurprisinglyshowsthattheirfamilylifeismoreharmoniousthanithaseverbeeninthepast.Weweresurprisedbyjusthowpositivetoday’syoungpeopleseemtobeabouttheirfamiliessaidonememberoftheresearchteamThey’reexpectedtoberebellious叛逆的andselfishbutactuallytheyhaveotherthingsontheirminds:theywantacarandmaterialgoodsandtheyworryaboutwhetherschoolisservingthemwell.There’smorenegotiation商议anddiscussionbetweenparentsandchildrenandchildrenexpecttotakepartinthefamilydecision-makingprocess.Theydon’twanttorocktheboat.Soitseemsthatthisgenerationofparentsismuchmorelikelythanparentsof30yearsagototreattheirchildrenasfriends.Myparentsarehappytodiscussthingswithmeandwillingtolistentomesays17-year-oldDanielLazallIalwaystellthemwhenI’mgoingoutclubbing.AslongastheyknowwhatI’mdoingthey’refinewithit.SusanCromewhoisnow21agrees.Lookingbackonthelast10yearstherewasalotofwhatyoucouldcallnegotiation.ForexampleaslongasI’ddoneallmyhomeworkIcouldgooutonaSaturdaynight.ButIthinkmygrandparentswerealotstricterwithmyparentsthanthat.Maybethispositiveviewoffamilylifeshouldnotbeunexpected.Itispossiblethattheideaofteenagerebellionisnotrootedinrealfacts.AresearchercommentsOursurprisethatteenagerssaytheygetalongwellwiththeirparentscomesbecauseofabriefperiodinoursocialhistorywhenteenagerswereregardedasdifferentbeings.Butthatideaofrebellingandbreakingawayfromtheirparentsreallyonlyhappenedduringthatonetimeinthe1960swheneveryonerebelled.Thenormalsituationthroughouthistoryhasbeenasmoothchangefromhelpingoutwiththefamilybusinesstotakingitover./Accordingtotheauthorteenagerebellion______.
第二次世界大战期间某国有支侦察小分队到德国法西斯一座十分隐蔽且又戒备森严的军工厂上级要求小分队必须在三天内炸毁它结果他们用十几只涂有化学药剂的老鼠完成了任务据推测这种药剂是
Amiddle-agedmanwithalongbeardwasarrestedbythepolicefordisorderlyconductandpropertydamage.Morechargesmightheaddedlatersaidapoliceofficer.ThemanidentifiedasBillWildcheckedintotheMotelFivelastnightaboutanhouraftersunset.Tellingtheclerkthathewouldbestayingfournightshepaidcashinadvance.ShesaidthatthenearestgrocerystorewasJohn-Johnswhichwasonlytwoblocksaway.ThepolicesaidthatWildwenttoJohn-Johnsandpurchasedthreegallonsofhoneyandfourgallonsofchocolatesyrup糖浆.Thecheckeraskedhimwhattheoccasionwas.HerepliedI’mtryingtobecomeasweeterperson.Thecheckersmiledatthejoke.Wilddrovebacktothemotel.Heopenedallsevencontainersandpouredthemintothebathtub.Headdedwarmwatertothemix.Thenheplacedhisboomboxonthebathroomfloornexttothetub.Hetunedtheradiotoanoperastation.Hegotundressedhoppedintothetubandstartedsingingloudlywiththemusic.Fifteenminuteslaterthelodgersintheroomnextdoorphonedtheclerk.ShebangedonWild’sdoorbuthekeptsinging.Shephonedhisroombuthedidn’tanswer.Thenshecalledthepolicewhoarrivedquickly.Wellatleasthepaidinadvancesaidtheclerk.Thatmoneywillhelppayfortheplumber管子工.Thebathtubdrainwascompletelyclogged阻塞.Thetubremainedfullofchocolateandhoney.Youjustneverknowaboutpeoplesaidtheclerk.Heseemedsoniceandfriendly.Who’dhavethoughthewasabathtub-singingnutThepolicesaidthiswasthethirdtimethatWildhadbeenarrestedforthiskindofbehavior.WhatisthebesttitleofthepassagePleaseanswerwithin5words.
Fromchildhoodtooldagewealluselanguageasameansofbroadeningourknowledgeofourselvesandtheworldaboutus.Whenhumansfirst16theywerelikenewbornchildrenunabletousethis17tool.Yetoncelanguagedevelopedthepossibilitiesforhumankind’sfuture18andculturalgrowthincreased.Manylinguistsbelievethatevolutionis19forourabilitytoproduceanduselanguage.They20thatourhighlyevolvedbrainprovidesus21aninnatelanguageabilitynotfoundinlower22.Proponentsofthisinnatenesstheorysaythatour23forlanguageisinbornbutthatlanguageitselfdevelopsgradually24afunctionofthegrowthofthebrainduringchildhood.Thereforetherearecritical25timesforlanguagedevelopment.Current26oftheinnatenesstheoryaremixed;howeverevidencesupportingtheexistenceofsomeinnateabilitiesisundeniable.27moreandmoreschoolsarediscoveringthatforeignlanguagesarebesttaughtin28grades.Youngchildrenoftencanlearnseverallanguagesbybeing29tothemwhileadultshaveamuchhardertimelearninganotherlanguageoncethe30oftheirfirstlanguagehavebecomefirmlyfixed.31someaspectsoflanguageareundeniablyinnatelanguagedoesnotdevelopautomaticallyinavacuum.Childrenwhohavebeen32fromotherhumanbeingsdonotpossesslanguage.Thisdemonstratesthat33withotherhumanbeingsisnecessaryforproperlanguagedevelopment.Somelinguistsbelievethatthisisevenmorebasictohumanlanguage34thananyinnatecapacities.Thesetheoristsviewlanguageasimitativelearnedbehavior.35childrenlearnlanguagefromtheirparentsbyimitatingthem.Parentsgraduallyshapetheirchild’slanguageskillsbypositivelyreinforcingpreciseimitationsandnegativelyreinforcingimpreciseones.Ⅱ．完形填空/Cloze阅读下列短文掌握其大意然后从每小题所给的四个选项ABCD中选出最佳选项
下列关于实验现象的描述不正确的是
在温度不变恒容的容器中进行反应正反应为吸热反应反应物的浓度由0.1mol·L-1降到0.06mol·L-1需20s那么反应物浓度由0.06mol·L-1降到0.036mol·L-1所需时间为
Theevidenceforharmonymaynotbeobviousinsomefamilies.Butitseemsthatfouroutoffiveyoungpeoplenowgetonwiththeirparentswhichistheoppositeofthepopularly-heldimage形象ofunhappyteenagerslockedintheirroomafterendlessfamilyquarrels.Animportantnewstudyintoteenageattitudessurprisinglyshowsthattheirfamilylifeismoreharmoniousthanithaseverbeeninthepast.Weweresurprisedbyjusthowpositivetoday’syoungpeopleseemtobeabouttheirfamiliessaidonememberoftheresearchteamThey’reexpectedtoberebellious叛逆的andselfishbutactuallytheyhaveotherthingsontheirminds:theywantacarandmaterialgoodsandtheyworryaboutwhetherschoolisservingthemwell.There’smorenegotiation商议anddiscussionbetweenparentsandchildrenandchildrenexpecttotakepartinthefamilydecision-makingprocess.Theydon’twanttorocktheboat.Soitseemsthatthisgenerationofparentsismuchmorelikelythanparentsof30yearsagototreattheirchildrenasfriends.Myparentsarehappytodiscussthingswithmeandwillingtolistentomesays17-year-oldDanielLazallIalwaystellthemwhenI’mgoingoutclubbing.AslongastheyknowwhatI’mdoingthey’refinewithit.SusanCromewhoisnow21agrees.Lookingbackonthelast10yearstherewasalotofwhatyoucouldcallnegotiation.ForexampleaslongasI’ddoneallmyhomeworkIcouldgooutonaSaturdaynight.ButIthinkmygrandparentswerealotstricterwithmyparentsthanthat.Maybethispositiveviewoffamilylifeshouldnotbeunexpected.Itispossiblethattheideaofteenagerebellionisnotrootedinrealfacts.AresearchercommentsOursurprisethatteenagerssaytheygetalongwellwiththeirparentscomesbecauseofabriefperiodinoursocialhistorywhenteenagerswereregardedasdifferentbeings.Butthatideaofrebellingandbreakingawayfromtheirparentsreallyonlyhappenedduringthatonetimeinthe1960swheneveryonerebelled.Thenormalsituationthroughouthistoryhasbeenasmoothchangefromhelpingoutwiththefamilybusinesstotakingitover./Thestudyshowsthatteenagersdon’twantto______.
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmunizedfrombirthagainstmanyofthemostdangerousdiseases.Alargenumberofoncefatalillnessescannowbecuredbymoderndrugsandsurgery.Itisalmostcertainthatonedayremedieswillbefoundforthemoststubbornremainingdiseases.Theexpectationoflifehasincreasedenormously.Butthoughthepossibilityoflivingalongandhappylifeisgreaterthaneverbeforeeverydaywewitnesstheincredibleslaughterofmenwomenandchildrenontheroads.Manversusthemotorcar!Itisanever-endingbattlewhichmanislosing.Thousandsofpeopleovertheworldarekilledorhorriblykilledeachyearandwearequietlysittingbackandlettingithappen.Ithasbeenrightlysaidthatwhenamanissittingbehindasteeringwheelhiscarbecomestheextensionofhispersonality.Thereisnodoubtthatthemotorcaroftenbringsoutaman’sveryworstqualities.Peoplewhoarenormallyquietandpleasantmaybecomeunrecognizablewhentheyarebehindasteering-wheel.Theysweartheyareill-manneredandaggressivewillfulastwo-year-oldsandutterlyselfish.Alltheirhiddenfrustrationsdisappointmentsandjealousiesseemtobebroughttothesurfacebytheactofdriving.Thesurprisingthingisthatsocietysmilessobenignlyonthemotoristandseemstocondonehisbehaviour.Everythingisdoneforhisconvenience.Citiesareallowedtobecomealmostuninhabitablebecauseofheavytraffic;townsaremadeuglybyhugecarparks;thecountrysideisdesecratedbyroadnetworks;andthemassannualslaughterbecomesnothingmorethanastatistictobeconvenientlyforgotten.Itishightimeaworldcodewerecreatedtoreducethissenselesswasteofhumanlife.Withregardtodrivingthelawsofsomecountriesarenotoriouslylaxandeventhestrictestarenotstrict:enough.Acodewhichwasuniversallyacceptedcouldonlyhaveadramaticallybeneficialeffectontheaccidentrate.Hereareafewexamplesofsomeofthethingsthatmightbedone.Thedrivingtestshouldbestandardizedandmadefarmoredifficultthanitis;allthedriversshouldbemadetotakeatesteverythreeyearsorso;theageatwhichyoungpeopleareallowedtodriveanyvehicleshouldheraisedtoatleast21;allvehiclesshouldbeputthroughstringentannualtestsforsafety.Eventhesmallestamountofalcoholinthebloodcanimpairaperson’sdrivingability.Presentdrinkinganddrivinglawswheretheyexistshouldhemadmuchstricter.Maximumandminimumspeedlimitsshouldbeimposedonallroads.GovernmentsshouldlaydownsafetyspecificationsformanufacturersashasbeendoneintheUSA.Alladvertisingstressingpowerandperformanceshouldbebanned.Thesemeasuresmaysoundinordinatelyharsh.Butsurelynothingshouldbeconsideredassevereifitresultsinreducingtheannualtollofhumanlife.Afteralltheworldisforhumanbeingsnotmotorcars.Theattitudeoftheauthoris______.
某固体酸燃料电池以CsHSO4固体为电解质传递H+其基本结构见下图电池总反应式可表示为 下列有关说法正确的是
两份等体积且氢离子浓度相同的溶液A和BA为盐酸B为醋酸它们分别和锌反应若最后仅有一份溶液中存在锌且放出氢气的质量相同则下列说法正确的是①反应所需要的时间A＞B②开始时的反应速率A＞B③参加反应的锌的物质的量A=B④反应过程中的平均反应速率B＞A⑤盐酸里有锌剩余⑥醋酸里有锌剩余
IamSergeyBrin!IwasborninMoscow.In1979whenIwas5myfamilyimmigratedtotheU.S.A.California.Irememberthatonmy9thbirthdayIgotmyfirstcomputerCommodore64.LaterIgraduatedwithhonorsintheUniversityofMarylandinMathematicsandIT.Themainfieldofmyscienceresearchwasthetechnologiesusedtocollectdatafromunsystematicsourcesaswellaslargequantitiesoftextsandsciencedata.IwastheauthorofdozensofarticlesinleadingAmericanacademicmagazines.Thegreatesteventinmylifehappenedwhenin1998Iwaspreparingforthedefense论文答辩ofmyDoctor’sdegreeinStanfordUniversity.TherethefatemadememeetLarryPage—ayoungcomputergenius.Larrybelongedtotheintellectual知识分子society.LarryandIquicklybecamefriendswhenweworkedtogether.WeweresearchingdayandnightontheInternet.Wewerefindingalotofinformationbutwiththefeelingwestillcouldn’tfindenoughofwhatwewerelookingfor.Naturallytheideaforasearchenginethatwouldallowspecificinformationtobefoundintheendlesspoolofdatawasbornlikeitcametous.Itwasn’tourplansbutwegaveuptheeducationattheuniversity.Youknowthenextpartmaybe—wemanagedtoturnanordinarygarageinMeploParkCaliforniatheU.S.A.intoourfirstofficeinwhichGooglewasborn.WithexcitementwetypedthenameofthethingwhichwecreatedwithloveonSeptember14th1998—www.Google.com.Nowafterthoseyearsweboughtthisgarage.Asasymbolitwillalwaysremindusthateverythingispossible.Whichisthefightorderofwhathappened
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