一、完形填空。
Money is very important in our daily life. But do you know how money developed over time?
Before people used money, they 1 goods directly. For example, a farmer might trade rice for cloth. It was not easy to do business in this way.
Later, people in ancient China 2 shell money. It was the earliest form of money in China. Even today, we can see the 3 of "shell" in many Chinese characters about money. During the Spring and Autumn Period, each state made its own money. It was not convenient for people to trade across different states. After Emperor Qin Shihuang united China, he made the whole country use the same type of money—a round coin with a square hole in the center. People could put the coins together with a rope and carry them 4.
Centuries later, there was less metal for making coins. The government of the Song Dynasty started to produce 5 money called "jiaozi". It was a great invention and it made trade much easier.
Now, with the development of 6, digital money becomes more and more popular. People pay for almost everything 7 their mobile phones in China. Foreign tourists are surprised at this convenient way of payment when they visit China.
What will money look like in the future? No one can tell for sure. But one thing is certain: money will continue to 8 and it will always make our life more convenient. It's important for us to understand the history of money and know the 9 of money. Every coin counts, and we should use money in a 10 way.
()1. A. bought B. traded C. sold D. gave
()2. A. found B. used C. invented D. saw
()3. A. symbol B. word C. name D. picture
()4. A. easily B. hard C. quickly D. slowly
()5. A. metal B. paper C. shell D. digital
()6. A. science B. technology C. history D. culture
()7. A. by B. with C. in D. through
()8. A. change B. live C. exist D. develop
()9. A. value B. price C. cost D. use
()10. A. good B. right C. clever D. happy

1. B 2. B 3. A 4. A 5. B 6. B 7. B 8. D
9. A 10. B