英语阅读填空
The "green" car has become popular in recent years.It means that a car is environmen-tally friendly.Today,most cars are powered by p_____.They make our lives easier,and there are lots of great things about them.But cars have also made problems for the environment.Two of the biggest problems are n_____ and pollution.
With the world's population growing l_____,we have to think of ways to make cars that are better for the environment.One day,maybe you can help i_____ a clean car that makes people,animals and plants happy!
There are a few new types of cars that don't use petrol.We are s_____ learning to make these cars better.The electric car is one of them.This car uses a battery for its power.When you're not driving it,just plug it in like a mobile phone to give yhe battery more power.Some electric cars are 97% c_____than petrol cars because they don't make exhaust(排气).But car makers still can't make a battery that lasts for a long time.That's why electric cars aren't ver p_____.