vegetables in the garden. However, most animals have a more varied diet. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The diet of these animals will be different depending on the season.

　　Humans have a very varied diet. We often eat food because we like it and not because it is good for us. In countries such as France and Britain, people eat foods with too much sugar. This makes them overweight, which is bad for their health. Eating too much red meat and animal products, such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modern life.

21. We can infer from the text that humans and animals .

　A. depend on one sense in choosing food B. are not satisfied with their food

　C. choose food in similar ways D. eat entirely different food

22. Which of the following eats only one type of food?

　A. The white butterfly. B. The small bird. C. The bear. D. The fox.

23. Certain animals change their choice of food when _________.

　A. the season changes B. the food color changes

　C. they move to different places D. they are attracted by different smells

24. We can learn from the last paragraph that .

　A. food is chosen for a good reason

　B. French and British food is good

　C. some people have few choices of food

　D. some people care little about healthy diet

　　A farmer grew some vegetables in his garden. One day his wife was ill and he had no money. He had to sell some cabbages and carrots in the market. The next morning he took two baskets of vegetables to town. But it was raining hard that afternoon and there were few people in the street. When his vegetables were sold out, it was dark. He bought some medicine and hurried to his village.

　　On his way home he saw a person lying on the snow. He placed his baskets on the ground and was going to help the person to get up. At that time he found it was a dead man and there was much blood on his body. He was so afraid that he ran away quickly, without taking the baskets with him.

　　The next afternoon the farmer was sent to the police station. Having shown the baskets, an officer asked: "Are these yours?" "Yes, sir." the farmer answered timidly. "Have you killed the man?" "No, no, sir." the farmer said in a hurry." When did you see the dead man?" "About seven last evening." "Did you see who killed the man?" "No, Sir." The officer brought out a knife and asked, "Have you seen it yet?" "No, Sir.' The officer became angry and told the policemen to beat him up and send him into prison.

　　That evening the officer went on trying（审判） .Pointing to the knife, he asked again," Have you seen it yet?" "Yes, Sir." The officer was happy and asked," When and where?" "I saw it here this afternoon, sir."

25．The farmer decided to sell the vegetables to .