(完整)初一英语美文朗诵

1、初一英语美文朗诵开展课外美文阅读对学生学习语文大有益处,但要抓好并非易事.它不仅仅是引导学生多看,还要采用适当的方法引领学生自主地走进读本,内化、吸收蕴含在字里行间的真谛,孕育出富有个性的美文.整理了初一英语美文,欢送阅读!SkyscrapersandEnvironmentInthelate1960's,manypeopleinNorthAmericaturnedtheirattentiontoenvironmentalproblems,andnewsteel-and-glassskyscraperswerewidelycriticized.Ecologistspointedo

2、utthataclusteroftallbuildingsinacityoftenoverburdenspublictransportationandparkinglotcapacities.Skyscrapersarealsolavishconsumers,andwasters,ofelectricpower.Inonerecentyear,theadditionof17millionsquarefeetofskyscraperofficespaceinNewYorkCityraisedthepeakdailydemandforelectricityby120,000kilowatts-en

3、oughtosupplytheentirecityofAlbany,NewYork,foraday.Glass-walledskyscraperscanbeespeciallywasteful.Theheatloss(orgain)throughawallofhalf-inchplateglassismorethantentimesthatthroughatypicalmasonrywallfilledwithinsulationboard.Tolessenthestrainonheatingandair-conditioningequipment,buildersofskyscrapersh

4、avebeguntousedouble-glazedpanelsofglass,andreflectiveglassescoatedwithsilverorgoldmirrorfilmsthatreduceglareaswellasheatgain.However,mirror-walledskyscrapersraisethetemperatureofthesurroundingairandaffectneighboringbuildings.Skyscrapersputaseverestrainonacity'ssanitationfacilities,too.Iffull

5、yoccupied,thetwoWorldTradeCentertowersinNewYorkCitywouldalonegenerate2.25milliongallonsofrawsewageeachyear-asmuchasacitythesizeofStanford,Connecticut,whichhasapopulationofmorethan109,000.摩天大楼与环境60年代后期,许多北美人把注意力转向了环境问题,那些崭新的玻璃钢摩天大楼受到了广泛的批评.生态学家指出,城市中密集的高层建筑经常给公共交通与停车场的承载水平造成过重的负担.摩天大楼还是电能的过度消费者与浪费者.最

6、近的某一年,纽约市摩天写字楼1,700万英尺办公面积的增加使电能的最高日需求量提高了120,000千瓦.这些电能足以供纽约的整个奥尔巴尼市使用一天.玻璃外表的摩天大楼特别地浪费.通过半英寸的平板玻璃墙壁损失或增加的热量是典型的参加绝缘板的石墙所允许的热量损失或增加的十倍以上.为了减轻取暖设备或空调设备的压力,摩天大楼的建造者们已经开始使用双面上釉的玻璃镶板和涂上了金色或银色反光薄膜的反光玻璃,来减少强光照射和热量的增加;但是,镜面的摩天大楼会提升周围空气的温度并会对附近的建筑物产生影响.摩天大楼也对城市的卫生设施造成了沉重的压力.单单纽约市的二个世界贸易中央大楼如果完全被占满的话,每年就会产生

7、2,250,000加仑的污水.这相当于康涅狄格州的斯坦福市这样大的城市一年所产生的污水量,而康州的斯坦福市拥有109,000人口.初一英语美文篇二ScientificTheoriesInscience,atheoryisareasonableexplanationofobservedeventsthatarerelated.Atheoryofteninvolvesanimaginarymodelthathelpsscientistspicturethewayanobservedeventcouldbeproduced.Agoodexampleofthisisfoundinthekineticm

8、oleculartheory,inwhichgasesarepicturedasbeingmadeupofmanysmallparticlesthatareinconstantmotion.Ausefultheory,inadditiontoexplainingpastobservations,helpstopredicteventsthathavenotasyetbeenobserved.Afteratheoryhasbeenpublicized,scientistsdesignexperimentstotestthetheory.Ifobservationsconfirmthescient

9、ists'predictions,thetheoryissupported.Ifobservationsdonotconfirmthepredictions,thescientistsmustsearchfurther.Theremaybeafaultintheexperiment,orthetheorymayhavetoberevisedorrejected.Scienceinvolvesimaginationandcreativethinkingaswellascollectinginformationandperformingexperiments.Factsbythem

10、selvesarenotscience.AsthemathematicianJulesHenriPoincaresaid,"Scienceisbuiltwithfactsjustasahouseisbuiltwithbricks,butacollectionoffactscannotbecalledscienceanymorethanapileofbrickscanbecalledahouse."Mostscientistsstartaninvestigationbyfindingoutwhatotherscientistshavelearnedabouta

11、particularproblem.Afterknownfactshavebeengathered,thescientistcomestothepartoftheinvestigationthatrequiresconsiderableimagination.Possiblesolutionstotheproblemareformulated.Thesepossiblesolutionsarecalledhypotheses.Inaway,anyhypothesisisaleapintotheunknown.Itextendsthescientist'sthinkingbeyo

12、ndtheknownfacts.Thescientistplansexperiments,performscalculations,andmakesobservationstotesthypotheses.Withouthypothesis,furtherinvestigationlackspurposeanddirection.Whenhypothesesareconfirmed,theyareincorporatedintotheories.科学理论在科学中,理论是对所观察到的相关事件的合理解释.理论通常包含一个虚构的模型,这个模型帮助科学家设想所观察到的事件是如何发生的.分子运动理论便是

13、我们能找到的一个很好的例子.在这个理论中,气体被描绘成由许多不断运动的小颗粒组成.一个有用的理论,除了能够解释过去的观测,还有助于预测那些未被观测到的事件.一个理论公开后,科学家们设计实验来检验这个理论.如果观察证实了科学家的预言,这个理论那么得到了验证.如果观察不能证实科学家的预言,科学家就必须进一步的研究.或许是实验存在错误,或许是这个理论必须被修改或抛弃.科学家除了收集信息和操作实验外还需要想象水平和创/造性思维.事实本身并不是科学.正如数学家乔斯;亨利;波恩克尔所说："科学建立在事实之上,就像房子用砖砌成一样.但事实的收集不能被称作科学,就像一堆砖不能被叫作房子一样.

14、"多数科学家通过找出别的科学家在一个特定问题上的所知来开始研究.在收集了事实之后,科学家开始了研究中需要相当想像力的局部.他们此后拟订对这个问题的可行的解决方法.这些可行的解决方式被称为假设.在某种意义上,任何假设都是向未知的跳跃.它使科学家的思维超越事实.科学家方案实验、计算、观测以检验假定.假设没有假设,进一步的研究便缺乏目的和方向.当假设被证实了,就成为理论的一局部.初一英语美文篇三SchoolingandEducationItiscommonlybelievedintheUnitedStatesthatschooliswherepeoplegotogetaneduca

15、tion.Nevertheless,ithasbeensaidthattodaychildreninterrupttheireducationtogotoschool.Thedistinctionbetweenschoolingandeducationimpliedbythisremarkisimportant.Educationismuchmoreopen-endedandall-inclusivethanschooling.Educationknowsnobounds.Itcantakeplaceanywhere,whetherintheshowerorinthejob,whetherin

16、akitchenoronatractor.Itincludesboththeformallearningthattakesplaceinschoolsandthewholeuniverseofinformallearning.Theagentsofeducationcanrangefromareveredgrandparenttothepeopledebatingpoliticsontheradio,fromachildtoadistinguishedscientist.Whereasschoolinghasacertainpredictability,educationquiteoftenp

17、roducessurprises.Achanceconversationwithastrangermayleadapersontodiscoverhowlittleisknownofotherreligions.Peopleareengagedineducationfrominfancyon.Education,then,isaverybroad,inclusiveterm.Itisalifelongprocess,aprocessthatstartslongbeforethestartofschool,andonethatshouldbeanintegralpartofone&#39

18、;sentirelife.Schooling,ontheotherhand,isaspecific,formalizedprocess,whosegeneralpatternvarieslittlefromonesettingtothenext.Throughoutacountry,childrenarriveatschoolatapproximatelythesametime,takeassignedseats,aretaughtbyanadult,usesimilartextbooks,dohomework,takeexams,andsoon.Theslicesofrealitythata

19、retobelearned,whethertheyarethealphabetoranunderstandingoftheworkingsofgovernment,haveusuallybeenlimitedbytheboundariesofthesubjectbeingtaught.Forexample,highschoolstudentsknowthattheyarenotlikelytofindoutintheirclassesthetruthaboutpoliticalproblemsintheircommunitiesorwhatthenewestfilmmakersareexperimenti