1 . 听下面一段独白，回答以下小题。
1. What is Habitat for Humanity?

A．A farm.

B．A community.

C．An organization.

2. Why did the Fullers found Habitat for Humanity?

A．To make profits.

B．To provide shelter for the poor.

C．To live a simple life.

3. Who must take part in building Habitat houses?

A．Building companies.

B．Local authorities.

C．House owners.

4. What do we know about Habitat houses?

A．They are cheap.

B．They are expensive.

C．They are free.