答案及解析 Key and Explanations：
　　1. v ( See para.B： Furthermore， it(EPA) contends that regulating emissions would not do good unless all or most other countries did the same. That is in keeping with the policies of President George Bush. )
　　2. i (See para.C： They point out that……he EPA decided that it did have the authority to regulate CO2. The act?says the EPA should regulate any air pollutant that 搈ay reasonably be interpreted to endanger public health or welfare? )
　　3. viii (See para.D： The Supreme Court may give a mixed ruling， decreeing that carbon dioxide is indeed a pollutant， but one the EPA is free to ignore or regulate as it pleases. Or it might dismiss the complaint on the grounds that the plaintiffs did not have the right to lodge it in the first place. )
　　4. iii (See para.E： Moreover， the case has a bearing on several other bitterly-contested lawsuits. )
　　5. vii (See para.F：…… many state governments are determined to tackle climate change. And several of the leading contenders for 2008's presidential election are much keener on emissions caps than Mr Bush. )
　　6. No. (See para.B， lines 11-12： Ten states， among them gas-guzzling Texas and car-making Michigan， also back 支持 the EPA. )
　　7. Yes. (See para.C， lines 2-3： American Samoa ， a Pacific territory in danger of vanishing beneath the rising ocean )
　　8. Not Given. ? (See para.D， Lines 5-6： In theory， they must prove that the EPA's foot-dragging has caused them some specific harm that regulation might remedy——a tall order in a field as fraught with uncertainty as climatology )
　　9. Yes. (See para.E， lines 3-4：)
　　9. Yes. (See para.E， lines 3-4： the case has a bearing意义 on several other bitterly-contested lawsuits.)
　　10. America / The U.S. (See para.A， lines 1-3： When the subject is global warming， the villain is usually America. Although it produces a quarter of the greenhouse gases that are heating up the planet， it refuses to regulate them.)
　　11. George Bush (See para.B， line 7： That is in keeping with the policies of President George Bush， who opposes mandatory curbs on emissions)
　　12. Carmakers (See para.E ， lines 4-7： Carmakers， for example， are trying to get the courts to strike down a Californian state law based on certain provisions of the Clean Air Act that require them to reduce their vehicles' CO2 emissions.)
　　13. Regulation (See para.F， lines 8-7： Many businesses， even some power companies， would rather see regulation now than prolonged uncertainty.)

　　Notes：
　　1. Kyoto Protocol： 京都议定书
　　2. That is in keeping with the policies of President George Bush，who opposes mandatory curbs on emissions and believes that any international accord on global warming should apply to all countries—unlike the Kyoto protocol，which exempts poor ones，including big polluters such as China and India. 那与布什总统的政策保持一致。布什反对对排放采取强制手段，认为任何有关全球变暖的国际条约都应适用于所有的国家而不是像京都议定书那样免除包括中国和印度这样的大的污染制造者在内的贫穷国家的义务。