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  3. What emitted from the exhaust pipe of the GM minivan the author drove is so clea

What emitted from the exhaust pipe of the GM minivan the author drove is so clea

游客2023-09-16  55
问题 What emitted from the exhaust pipe of the GM minivan the author drove is so clean that it is drinkable. [br] Hydrogen-powered fuel-cell vehicles that need no oil and emit no ______ will be developed by the Department of Energy and automakers Ford, General Motors and DaimlerChrysler.
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答案 toxic chemicals
解析 由题干关键词Hydrogen-powered fuel-cell vehicles定位到第二个小标题下第二段最后一句。能源部、福特汽车制造、大众和克莱斯勒汽车制造建立了一个合作项目，共同研制以氢为动力的燃料电池汽车，这种汽车不需要汽油而且不排放有害化学物质。
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