Choose the best answer（根据短文，选择最恰当的答案）

In our daily life, we often use things once and then throw them away. This is such a big problem that it causes huge mountains of rubbish. We do not know what to do with the rubbish. And some people feel terribly sorry because they also do the same thing.

Today our environment is in danger. We pollute air, water and land while we enjoy our modern(现代的) life.

We should try our best to save our environment from now on. The basic way is to become a green consumer. We should only buy and use things that do not damage the environment. Besides, the following ways can help us to protect our environment:

Stop wasting water.

Pick up rubbish in the park or on the ground.

Stop cutting down trees.

Plant more and more trees

【小题1】How many times do we often use things?

A．Three times.

B．Twice.

C．Once.

D．Never.

【小题2】Why do some people feel sorry for causing rubbish?

A．Because they do nothing to save the environment.	B．Because they often use things only once.
C．Because of the bad environment.	D．Because of enjoying their modern life.

【小题3】How is our environment today?

A．Very good.

B．In danger.

C．Quite clean.

D．All green.

【小题4】What is the basic way to save our earth?

A．To be a green consumer.	B．Pick up rubbish.
C．Plant more trees.	D．Stop wasting water.

【小题5】What does the passage mainly talk about?

A．We should use things twice.	B．There is much rubbish in the world.
C．We should save our environment.	D．I feel terribly sick about the rubbish.