题目

阅读下面短文并回答问题，然后将答案写到答题卡相应的位置上（请注意问题后的字数要求）。 Doctors say anger can be an extremely damaging, unless you learn how to deal with it. They warn that anger can lead to heart disease, stomach problems, 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, and scream and yell. But other people keep their anger inside. They can not or will not express it. This is called ____下列各数中是无理数的是（ ）．A. B. C. D.