2 . Many people who want to lose weight often choose to go on a diet. But is this really the best way? With celebrities (名人) speaking about new diets that have helped them become slim (苗条的) in advertisements (广告), more and more people are turning to dieting. Some shops begin to sell diet products such as diet milkshakes, snack bars and even diet pills. However, such popular products and diets are often found to be extremely unhealthy.
Most of these popular diets work by cutting down on a certain nutrient (营养素) from your food intake (摄入量). For example, some diets work by cutting down on carbohydrates (碳水化合物). This means the body must use its fat reserves for energy. This might help you lose weight. However, by cutting a particular food group out of your diet, you are starving your body of a nutrient that it needs, which could leave you feeling weak, tired or even bad-tempered. Besides, these diets are often unsuccessful in the long run.
Generally, one of the most effective ways of losing weight is to cut down on calories. The recommended (推荐的) calorie intake for an adult male is 2,500. If a man consumes more than 2,500 calories each day, then he is likely to gain weight. However, if he consumes less, then he is likely to lose weight.
In fact, proteins, carbohydrates, fats, vitamins and minerals all play an important role in staying healthy, which is why they all should be included in your meals. Of course, some foods can be eaten in moderation (节制) as an occasional snack. For example, a bar of chocolate every once in a while won't cause you any problems.
So, instead of spending money on popular diet pills or special weight loss foods, try to eat healthy balanced meals containing foods from all food groups. So, next time your friends tell you that they are going on a diet, tell them that eating a healthy balanced diet is a much better choice.
1. What is the author's opinion about the popular diets mentioned in the passage?
| A．They are useful for losing weight. |
| B．They are welcomed by celebrities. |
| C．They are not as healthy as people think. |
| D．They are replacing people's everyday meals. |
2. What is the author's attitude towards the popular diet pills?
| A．Curious. | B．Unfavorable. |
| C．Unconcerned. | D．Supportive. |
3. How can we lose weight effectively according to the author?
| A．By having diet pills. | B．By following a strict diet. |
| C．By taking regular exercise. | D．By reducing calorie intake. |
4. What can we infer from the last paragraph?
| A．Diet products should be limited. |
| B．Snacking is a big no-no for health. |
| C．Keeping a diet with various nutrients is ideal. |
| D．Going on a diet should be stopped immediately. |
