题目内容：

听下面一段较长对话，回答以下小题。

1.What’s the topic of the show today?

A.The language learning B.The language loss C.The climate change

2.What is the probable relationship between the two speakers?

A.The host and guests.

B.Teacher and students.

C.Boss and employee.

3.How many languages will probably disappear soon?

A.About 6,000 B.About 3,000 C.About 1,000

4.Why does Allan refer to the article in Nature?

A.To reach a final agreement

B.To ask people to learn the language

C.To give a more specific example