On Anger 
Doctors say anger can be an extremely harmful emotion, unless you learn how to deal with it. They warn that angry feelings can lead to heart disease, stomach problem, headaches, emotional problems and possibly cancer.
Anger is a normal emotion that we all feel from time to time. Some people express anger openly in a calm reasonable way. Others burst with anger, losing control of themselves. But other people repress their anger. They cannot or will not express it.
For years many doctors thought that repressing anger was more dangerous to a person’s health than expressing it. They said that when a person is angry, the brain releases the same hormones (激素) that are produced during tense situations. They speed the heart rate, raise blood pressure, or sugar into the blood and narrow the blood vessels to the interstices (空隙). In general, the person feels excited and ready to act.
Doctors said that repressing these feelings only makes the feelings continue. And this can lead to many medical problems. Doctors thought a person could prevent these problems by letting the anger out by expressing it freely. But recently some doctors held a different view. They said that people who express anger repeatedly and violently did become, in fact, more and not less angry. They said this, too, can cause medical problems.
Some doctors say that both repressing and expressing anger can be dangerous. They believe that those who express anger strongly may be more likely to develop heart disease, and they believe that those who keep their anger inside may face a greater danger of high blood pressure.
Doctors say the solution is learning how to deal with anger. They say the first step is to admit that you are angry and to recognize the real cause of the anger, then decide if the cause is serious, enough to get angry about. If it is, they say, “Do not express your anger while angry. Wait until your anger has cooled down and you are able to express yourself calmly and reasonably.”
69. Repressing anger was considered to be dangerous because of all the following EXCEPT that  __________  .
A. the heart rate increases    B. the blood pressure rises
C. the blood contains sugar   D. some blood vessels become thinner
70. Which of the following is the more recent view about the expression of anger?
A. It is dangerous to express anger repeatedly or repress one’s anger.
B. One can avoid his medical problems by expressing his anger freely.
C. One’s heart rate will increase if his anger is repressed.
D. One is likely to suffer from high blood pressure in a fit of great anger.
71. When you get angry, which of the following should you do for the sake of health?
A. Repressing the anger.        B. Expressing the anger.
C. Treating the anger properly.   D. Learning how to make a deal.
72. What is the central topic of this passage about?
A. The different ways of dealing with anger.
B. The dangers of anger and the solution
C. New medical discoveries. 
D. The argument between the new and old views about anger.