1 . 听下面一段较长对话，回答以下小题。
1. According to the woman, how long are whales’ teeth today?

A．About half a foot long.

B．Around a foot long.

C．Two feet long.

2. How old is the recently discovered tooth according to the scientists?

A．Five million years old.

B．Twelve million years old.

C．Thirteen million years old.

3. Where is the tooth now?

A．At the man's home.

B．On a beach.

C．In a museum.

4. What does the man imply in the conversation?

A．He would like to go to Australia.

B．Animals were very different years ago.

C．He wishes he found something important.