单项选择题

Doctors say anger can be an extremely damaging emotion unless you learn how to deal with it. They warn that angry feelings can (1) heart disease, stomach (2) , head-aches, and (3) cancer. Anger is a normal (4) that all feel (5) Some people ex-press anger (6) in a calm, reasonable way. Some people (7) with anger and scream and yell. But other people keep their anger (8) . They can not or will not (9) it.This is called repressing anger. (10) years many doctors thought that (11) anger was more dangerous to a person’s (12) than expressing it. Doctors said that (13) the feel-ing to express the anger only makes the feeling (14) And this can lead to many (15) problems. Doctors thought a person could (16) these problems by telling the anger (17) , by expressing it freely. But recently some doctors (18) this. They said that people who (19) anger repeatedly and explosively become in fact (20) angry.

19（）

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