5．
阅读理解
Our
earth is in trouble. Our drinking water is becoming dirtier, and the air is not
as clean as before! People and factories are polluting the air, rivers and
lakes and seas. You may think that there is nothing you can do to help. That's
not true. There are many things you can do to help the earth.
Cars
burn gasoline. This will produce a lot of CO2 into the air. Some people believe
that too much CO2 is making the earth warmer than ever. They think CO2 thins
the clouds above us. The clouds keep us away from the strongest sunlight. So
try to walk, ride a bike or take a bus. And if you drive a car, drive at a
steady speed. This can save some gasoline.
The
biggest energy use at home is for keeping cold or hot. So turn the air
conditioner off when you don't need to use it. What's more, some people use
plenty of water to wash things. It is necessary to save water by reusing it. For
example, after washing vegetables, you can use the water to water the flowers. In
addition, taking a shower instead of a bath also helps us to reduce the water
use.
We
do not need to do big things. We can start out small. Let's protect out Earth.
