[多项选择]You are to write a composition about How to Keep Healthy. You should write an essay of about 150 words making reference to the following points:
1) physical exercises;
2) food;
3) habit.

参考答案:
How to Keep Healthy
Nowadays more and more people are concerned about their health. If you happen to be in one of the city parks, at the seaside, or even on the street in the early morning, you will see lots of people. Some are practising Tai Ji Quan and swordplay (舞剑) , while others are running, walking or dancing. Researches show that getting plenty of exercise makes the heart beat faster and the lung work harder. This strengthens the heart, reduces the chance of heart attack (心脏病发作), and helps lower blood pressure.
Medical researchers have proven that what people eat affects their health. They advise people to eat more fruits and vegetables and less meat such as beef and pork because meat contains more fat than poultry (家禽肉) and fish. Fat can build up in the arteries (动脉), block the flow of blood, and cause a heart attack or stroke.
Getting rid of bad habits like smoking and drinking alcohol is also an important way to keep healthy. Unfortunately few people follow this advice. If people would take good care of themselves in these three respects, they would greatly improve their health and keep fit.