1 . Electric cars are already greener than petrol cars in almost every part of the world today, according to researchers. They say electric vehicles are “a no-regret choice” even in places where power nets haven’t gone fully green.
Some previous comparisons suggested petrol cars produce lower net carbon emissions (净碳排放量) over their lifetime than battery- powered cars. Yet these analyses have often compared only two fixed models of cars.
Instead, the researchers from Radboud University looked at the average emissions across many classes of car to get a clearer global picture. It includes during its production, while it is being driven and when it is broken, for all the petrol and electric cars sold in 59 areas across the world in 2015. They connected with information of those areas in the following years and found that the electric vehicles are greener than the new petrol cars. Electric vehicles already have lower net carbon emissions in 53 of those 59 areas. Only in some countries that use coal heavily, such as India and Poland, are electric car emissions worse than those of petrol cars.
The researchers say that the differences between petrol and electric cars on the carbon emissions will grow bigger as power stations get greener. By 2030, they expect the carbon emissions of electric cars to be 20 percent lower than that in 2015, and 30 percent lower by 2050. The suggestions for governments are clear, says Knobloch.“There is no need to wait. Don’t be confused by all those different results out there. It’s a no-regret choice already.”
1. Why did the former comparison show petrol cars more greener?| A．It was too simple. |
| B．It had no scientific basis. |
| C．It lacked experimental evidence. |
| D．It lacked enough reference objects. |
| A．6. | B．53. | C．59. | D．112. |
| A．Petrol cars will be fully replaced. |
| B．The carbon emissions of electric cars will be zero. |
| C．Power stations will get huge advance technologically. |
| D．Petrol cars’ pollution will force people to buy electric cars. |
| A．To state the development of electric cars. |
| B．To tell readers how to choose an electric car. |
| C．To show electric cars are greener than petrol cars. |
| D．To state the differences between petrol and electric cars. |
