听下面一段材料,回答第1-4题。 |
1. What does the speaker encourage us to do? |
A. Raise animals. B. Lose weight. C. Eat healthy. |
2. What do we learn about people in earlier times from the speaker? |
A. Free from worry about bad effect of food. B. Busy producing food for others. C. Rich in various food. |
3. Why do some people give up eating potatoes or rice? |
A. To stay well. B. To keep slim. C. To eat right. |
4. How should we control our weight? |
A. By having a balanced diet. B. By having the same diet. C. By dieting and exercising. |