Practice 5　　You should spend about 40 minutes on this task.　　Write about the following topic:　　In some countries the average weight of people is increasing and their levels of health and fitness are decreasing.　　What do you think are the causes of these problems and what measures could be taken to solve them?　　Give reasons for your answer and include any relevant examples from your own knowledge or experience.　　Write at least 250 words.

正确答案： 【参考范文】
Today, more and more countries are experiencing a situation where their citizens are becoming heavier, less fit, and more unhealthy. The causes of this are clear, and there are many possible solutions. I shall look at the causes and a couple of possible solutions in this essay.
In almost all cases, the causes of increased weight are excessive eating and/or lack of exercise. If a person eats more calories than they use, they will certainly gain weight. If they do not exercise enough, this weight gain will become fat and too much fat results in health problems such as obesity and depression. The solutions, therefore, are simple enough—to convince people to consume fewer calories and/or exercise more.
This is easier said than done. Nowadays, more and more people have access to an increasing amount of food. Many people prefer food that is high in calories—perhaps because they think it tastes better or because it is faster and more convenient. One way of getting them to eat fewer calories can be to show them tastier dishes quickly prepared with lower calories.
Another solution is to have people do more exercise, so that the calories eaten are less of a problem. This could be done by reducing the cost of keeping fit and by creating better infrastructure. Financing sports and exercise facilities could be pricey, but there are long-term savings as well as benefits if people are healthier as a result. If every neighbourhood had easily accessible sports and exercise facilities, people would be able to use them much more often.
In conclusion, there are two main causes of weight increase and there are several possible solutions to tackle it.

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