题目内容：

阅读与表达 (每小题2分，共10分)

People all over the world eat rice. Millions of people in Asia, Africa and South America eat it every day of their lives. Some people eat almost nothing but rice.

Rice is a kind of grass. There are more than 7, 000 kinds of rice. Farmers grow rice in many countries, even in the southern part of the United States and in eastern Australia.

No one really knows where rice came from. Some scientists think that it started to grow in two places. They think that one kind of rice grew in southern Asia thousands of years ago. Someone in China wrote about it almost 5, 000 years ago. Another kind probably grew in west Africa. Other scientists think that rice came from India, and Indian travelers took it to other parts of the world.

There are two main ways to grow rice. Most rice grows in wet soil. People in many countries do all of the work of growing rice by hand. This is the same way farmers worked hundreds of years ago. In some countries, people now use machines on their rice farms.

People use every part of the rice plant. They make animal food and rice oil from it. They also make baskets, brooms and roofs for their houses. They burn dry rice plants in fires for cooking.

1.Do the people all over the world eat rice?

2.How many kinds of rice are there?

3.Where do scientists think rice came from?

4.How did farmers grow rice hundreds of years ago?

5.Which part of the rice plant can be used?