You should take more exercise. It’s good ______ your health.

                A. at                                      B. with                        C. for                           D. to

It is a cold and dry winter morning. When you wake up, you feel that your throat hurts. You begin to sneeze and later you may cough. You must have a cold! Wait a moment. Could it just be a common cold or the flu (流感) that’s been going around?
A cold gives you a runny nose and cough. But it’s usually easy to deal with. Some take medicine while others drink herbal tea or chicken soup. Usually you feel better after a week.
On the other hand, the flu can be much more dangerous. It usually gives you fever. Sometimes it can cause death. According to an American magazine, the worst flu killed about 50 million people from 1918 to 1919.
Don’t worry. If you get a flu vaccine (疫苗), it can stop you from getting the virus (病毒). Flu vaccines work by giving the body a small amount of flu viruses. This causes your body to develop antibodies (抗体). So next time you get the flu, the antibodies should help you.
The flu virus changes every few years. Therefore, there are so many types of flu, such as H1N1 and H5N1. The antibodies for one type of flu can’t help us against all types of flu. That’s why we need to get the vaccine every year.
However, good health habits may also help stop you developing a cold or flu. Washing your hands often helps stop you from getting viruses. It is also important to get regular exercise and eat healthy food. All these can help you strengthen your immune system (增强免疫系统).
【小题1】If you have a common cold, usually you’ll feel better after ________.

A man walked into a doctor's examining room. "Put out your tongued(舌头) ," the doc­tor said. The man put out his tongue, and the doctor looked at it quickly.

"OK, you can put your tongue back now," the doctor said. "It's clear what's wrong with you. You need more exercise. "

"Rut, doctor," the man said. "I don't think___"

"Don't tell me what you think," the doctor said, "I am the doctor, not you. I know what you need. I see hundreds of people like you. None of them get any exercise. They sit in offices all day and in front of the TV in the evening. What you need is to walk quickly for at least 20 minutes a day. "

"Doctor, you don't understand," the patient said. "I___"

"I don't want to hear any excuse," the doctor said. "You must find time for exercise. If you don't, you will get fat and have health problems when you are older. "

"But I walk every day. "the patient said.

"Oh, yes, and I know that. You walk a few feet from your house to your office, or a few more feet from your office to a restaurant, etc. That is not real walking. I'm talking about a walk in the park for twenty minutes every day. “

"Will you listen to me, doctor!" the patient shouted, getting angry with the doctor who thought he knew everything. "I'm a postman, "the patient went on. "and I walk for seven hours every day!"

For a moment the doctor was silent, then he said quietly, "Put your tongue out again, will you?"

1. At first the doctor asked the man________.

A. to walk to work                    B. to take some medicine

C. to show his tongue                 D. to see other patients

2. The doctor would not________.

A. tell the patient to take exercise         B. let the patient say what he thinks

C. look at the man's tongue              D. let the patient watch TV

3. The doctor told the patient that he________.

A. should get more exercise               B. should stop making excuses

C. should watch more TV                 D. was already too fat

4. The patient was very________ when he heard what the doctor told him to do,

A. angry   .       B. happy         C. interested              D. tired

5. The doctor________.

A. gave him some good ad vice (忠告)          B. walked seven hours a day

C. was really a postman                       D. knew that he was wrong at last