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LanguagePoints1.ItappearsasthoughthecrusadetodeterminethebestalternativeenergysourcesisseriouslybeinglookedintobylotsofcountriesincludingmostAmericancities.(Para.A,L1-2.)•→ItseemsthatlotsofcountriesaswellasmostAmericancitiesareseriouslyinvestigatingwaystolaunchthecampaignofutilizingthebestalternativeenergysources.翻译：似乎许多国家，也包括大多数美国城市，正在认真发起一场寻找最佳替代能源的运动。Reading2■Sentences：这句话的句子主干是：Itappearsasthoughthecrusade…isseriouslybeinglookedintoby…LanguagePoints2.Theserenewableenergysourceshavebeenshowntobeofgreataidincuttingdowntheamountoftoxins,whichareby-productsoftheconsumptionofenergy.(Para.B,L5-6.)翻译：经证明，这些可再生能源有助于减少有毒物质，即能源消耗所产生的副产品。Reading2LanguagePoints3.Theendproductsarethendistributedtonationalelectricalgridsandsmallturbinesownedbyindividualstodistributeelectricitytofar-flungareasandhomes.(Para.F,L30-32.)翻译：其产生的电能，通过国家电网和私人小型涡轮机，输送到偏远的地区和家庭。Reading2LanguagePoints2.Thedownsideofgeothermalenergyisthefactthatitisexpensivetobuild,andtoensurethatnoharmfulby-productsaregoingtobeproducedintheprocess,geothermalplantsmustbecreatedaccordingly.(Para.H,L41-43.)→Therearetwonegativeaspectsofgeothermalenergy.Oneisthatitisexpensivetobuildandtheotherisgeothermalplantsmustbesetuptoensurenoharmfulby-productsduringtheprocess.翻译：地热能的不足之处就是其获取费用太高，但为了确保在利用地热能过程中无有害副产品的产生，地热发电厂的修建必不可少。Reading2LanguagePoints5.Thedifferenceisthatweusetheforceofthewatertopushtheturbinewhichinturnpowersageneratorthusgeneratingelectricity.(Para.I,L48-49.)翻译：那就是，现在利用水力推动涡轮机为发电机提供动力，进而产生电能。Reading2LanguagePoints6.Agriculturallyproducedbiomassfuels,suchasbio-dieselandethanolcanbeburnedininternalcombustionenginesorboilers.(Para.K,L59-60.)翻译：Reading2农业上生产的生物质燃料，如生物柴油、乙醇，可在内燃机或锅炉内燃烧。LanguagePoints7.Rightnow,itistheonlyfuelapprovedbytheEnvironmentalProtectionAgency(EPA),passedeveryHealth-EffectsTestoftheCleanAirActandmeetstherequirementsoftheCaliforniaAirResourcesBoard(CARB).(Para.L,L67-69.)翻译：目前，生物燃料是唯一经美国环境保护署批准的燃料，它通过了《清洁空气法》各项健康影响测试，符合加州空气资源委员会的要求。Reading2句子分析：这是一个由三个并列谓语组成的长句。三个谓语动词分别为is,passed,meets。LanguagePoints■WordsandPhrases:Reading2lookinto(L2)考察，调查，研究beofgreataid(L5)对……有很大的帮助cutdown(L5)减少convert…into(L8)把…转化为ancienttimes(L12)古代nationalelectricalgrids(L31)国家电网far-flungareas(L32)偏远的地区radioactivedecay(L38)放射物衰变generateelectricity(L49)发电poseaproblem(L53)提出一个问题internalcombustionengines(L60)内燃机beamazedat(L70)惊讶于