Electric cars are different from usual cars. They are powered by batteries（电池）.There are different kinds of batteries for different cars.The battery of the car affects how long the car can go.An electric car can go from 50 to 250 miles at a time.It costs less than the usual car.According to a report，when a usual car goes a mile，it costs about 12 cents.But for an electric.car，it only needs about two cents.It saves lots of money. Electric cars are good for the environment（环境） if the batteries get power from nuclear，wind or solar power.But the companies shouldn't use coal to power the batteries of electric cars because it can produce environmental pollution like the usual cars.（1）Why will the electric cars become more and more popular？ ____ （2）What does the underlined word "They" refer to？ ____ （3）How much does an electric car cost when it goes a mile？ ____ （4）What should we use to power the batteries of electric cars？ ____ （5）What do you think of the electric cars？（请自拟一句话作答） ____

As the prices of fuel and oil（燃油和机油）keep going up，the electric cars will become more and more popular in people's life.Many companies spend money in making electric cars no.
    Electric cars are different from usual cars. They are powered by batteries（电池）.There are different kinds of batteries for different cars.The battery of the car affects how long the car can go.An electric car can go from 50 to 250 miles at a time.It costs less than the usual car.According to a report，when a usual car goes a mile，it costs about 12 cents.But for an electric.car，it only needs about two cents.It saves lots of money.
    Electric cars are good for the environment（环境） if the batteries get power from nuclear，wind or solar power.But the companies shouldn't use coal to power the batteries of electric cars because it can produce environmental pollution like the usual cars.
（1）Why will the electric cars become more and more popular？ ____
（2）What does the underlined word "They" refer to？ ____
（3）How much does an electric car cost when it goes a mile？ ____
（4）What should we use to power the batteries of electric cars？ ____
（5）What do you think of the electric cars？（请自拟一句话作答） ____