题目内容：

听下面一段独白，回答以下小题。

1.What is the talk mainly about?

A. Some of the things that served as money in the past.

B. How people decided the value of money.

C. How money came into use.

2.Which of the following was difficult to get in some European countries?

A. Tea. B. Salt. C. Nuts.

3.What kind of animal is used as money in some places today?

A. Cows. B. Horse. C. Sheep.

4.Who were the first people to use coins as money?

A. The Japanese. B. The American Indians. C. The Chinese.