Jeff Corwin is a scientist and author. He does these jobs with one life goal: to help save animals and their habitats. His latest book, 100 Heartbeats: The Race to Save Earth's Most Endangered Species, is a collection of stories about animals on the edge(边缘) of extinction. Corwin recently talked to TFK kid reporter Sarah Horbacewicz.

Reporter: How would you describe your job?
Corwin: My job is to travel around, look at animals and tell their stories.
Reporter: When did you know this is what you wanted to do?
Corwin: I knew that when I was 6 years old. My dad was a police officer, and we lived in the city. I really enjoyed the time when I could go to the quiet countryside. The day that I saw my very first wild snake, I knew that's what I would do for the rest of my life. I didn't know if I would be a teacher or a zookeeper, but I know I would have a life connected with (与……有关) nature.
Reporter: Why did you write the book?
Corwin: We're losing species(物种) very fast. I wanted to show people that while we are in a very serious situation, we are not at the point of no return. If we make big changes, we may have the chance to save what remains.
Reporter: Is it true that humans are the reason that many of these animals are in danger?
Corwin: Human beings have a powerful effect on every other living thing. The challenge is to make that effect a positive one.
【小题1】Jeff Corwin is a(n) .

A．teacher	B．author
C．police officer	D．zookeeper

【小题2】Jeff Corwin's life goal is to .

A．protect the environment

B．do some scientific researchers

C．save animals and their habitats

D．let more people know about nature

【小题3】The underlined word "extinction" means " " in Chinese.

A．灭绝

B．生存

C．冬眠

D．饥饿

【小题4】What does the underlined sentence mean?

A．Human beings are now in danger.

B．We can't save the endangered species.

C．Humans can't deal with serious situations.

D．We can make some changes to save the endangered animals.

【小题5】Which of the following is NOT true according to the reading?

A．Corwin lived in the city when he was young.

B．Corwin has been trying his best to help save animals and their habitats.

C．It isn't true that humans can have a positive effect on other living things.

D．The first time Corwin saw the wild snake, he knew what to do for the rest of his life.