Now too much CO₂ makes the Earth warmer and warmer, and brings bad effect to people. To save our Earth, a new lifestyle called low-carbon life becomes popular. Low carbon means low energy and no waste. It is necessary for everybody to learn to live a low-carbon life.

To live a low-carbon life, we’d better save as much energy as we can. For example, turn off the lights and TV when you don’t use them, use cold water to wash clothes or dishes; take a short shower and try to take a cold one when the weather gets warm; don’t do the cooking with electricity.

To live a low-carbon life, we should eat less meat. Being a vegetarian can help reduce (减少) one and a half ton of carbon dioxide a year, but keeping animals for food produces even more carbon dioxide than all the cars do in the world.

To live a low-carbon life, we should plant more trees. Trees are very important for us. They can not only produce oxygen for us to breathe and keep the air clean, but also take in the harmful gases from the air. To protect trees we should stop people from cutting down trees and plant as many trees as we can.

If we can keep them a habit in our daily life, the earth will become a safer planet for us to live on.

【小题1】Why does low-carbon life become popular?

A．Because it can protect animals.	B．Because it can save the earth.
C．Because it can protect trees.	D．Because it can clean water.

【小题2】How many kinds of way of living a low-carbon life are talked about in the passage?

A．Three.

B．Four.

C．Five.

D．Six.

【小题3】What can we do to make carbon dioxide become less?

A．We can use cold water in our life.	B．We can try to use less water.
C．We can eat too much meat.	D．We can take a bath.

【小题4】What does the underlined word “them” refer to?

A．The ways to protect trees.	B．The ways to keep animals for food.
C．The ways to live a comfortable life.	D．The ways to live a low-carbon life.