3．
根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。 Health is the most important for any of us. In order to 1 healthy, we need some common knowledge. Firstly, pay attention to the diet. We should eat lots of fruit and 2, because they are rich in fiber(纤维) and low in fat. As a proverb says, "An apple a day 3 the doctor away." So fruit is good for health. Don't have a lot of food that contains 4 fat, such as butter. At the same time, we should eat sweets in proper quantity, 5 too much sugar is bad for us. Don't drink too much coffee, either. Secondly, exercise is 6. Regular exercise can help us keep from getting fat. People who do running every day usually have 7 hearts than those who don't. Finally, have good living 8. We should sleep for about 8 hours at night, and 9 work too late. Overwork and little sleep will lead to illness. What's more, 10 cigarettes(卷烟 ). These are the things we should pay attention to so as to stay healthy.
