题目

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The"green"car has become popular in recent years.It means that a car is envirnmentally friendly.Today,most cars are powered by p( ).They make our lives easer,and there are lots of great things adout them.But cars have also made problems for the environment.Two of the biggest problems are n( )and pollution.
With the word'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 nem types of cars that don't use petrol,We are s( ) learning to make these cars better.The electric is one of them,This car uses a battery for its power.When you're not dirving it,just plug it in like a mobile phone to give the battery more powwer.Some electric cars are 97% c( )than petrol cars because they don't make exhaust.But car makes till can't make a battery that lasts for a long time.That's why electric cars aren't very p( ).

提问时间：2021-02-09

答案

petrol
noise
larger
invent
cleaner
popular