举一反三
- The cost of natural gas is significantly less than that of diesel and gasoline．
- what can be used as fuel for automotive engine?() A: Natural gas B: diesel C: propane Gasoline D: Gasoline
- New York and other U.S. cities have begun using vehicles powered by natural gas
- Germany plan to ban the sale of vehicles using gasoline and diesel as fuel by 2040.
- 中国大学MOOC: IIHere’s a paragraph that has both factsand opinions.Read and decide whether they are factsor opinions. (10 points, five for each)New York and other U.S. cities have begun using vehicles powered by natural gas[1]. This is a good idea[2], because vehicles that use natural gas do not pollute the air[3]. Pollution is the biggest problem facing cities right now[4]. Furthermore, natural gas is more cost-effective than regular gas[5]. All cities should use only vehicles powered by natural gas[6].1.Facts are _________
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What are measures that can be taken to reduce outdoor air pollution? （ ） A: Encouraging less frequent emissions inspections on vehicles B: Using less-leaded gasoline C: Reducing the burning of garbage D: Using leaded gasoline
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Using some ________ fuels ,such as natural gas, in vehicles can generally00a000a0reduce harmful pollutants and exhaust emissions.
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When conventional heating cannot be avoided, the energy carrier will define carbon emissions. What is the order of coal, oil, and natural gas? A: oil < gas
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Coal, oil and natural gas are __________ and __________. A: clean ... recyclable B: renewable resource ... unconventional energy C: non-renewable resource ... conventional energy
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What does the example of three cars explain for? (). A: Unmanned vehicles are much better than manual in term of safe<br/>distance. B: Unmanned<br/>vehicles are much better than manual in term of reaction time. C: Unmanned vehicles can greatly reduce greenhouse gas emissions. D: Unmanned vehicles can greatly increase greenhouse gas emissions.