下列哪项是肾病综合征患者最常见的临床表现（） A.高血压 B.水肿 C.面色苍白、乏

二元一次方程x+2y=8的非负整数解[ ]

A.有无数对

B.只有5对

C.只有4对

D.只有3对

已知：a、b、c是△ABC的三边，且满足a²=（c+b）（c-b）和4c-5b=0，求cosA+cosB的值．

计算：（-3mn^-1）³=______．

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 repressing anger.

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 . They speed the heart rate, raise blood pressure, or sugar into the blood, etc. In general the person feels excited and ready to act.

Some doctors say that both repressing and expressing anger can be dangerous. They believe that those who express anger violently 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."

Doctors say that a good way to deal with anger is to find humor in the situation that has made you angry. They said that laughter is much healthier than anger.

小题1:What is the purpose of this passage ?(within 10 words)

小题2:How many ways do people usually react if they are angry?(within 2 words)

小题3:What does the underlined word“They”refer to in Paragraph3?(within 2 words)

小题4:What kind of people tend to develop heart diseases according to the passage?(within 6 words)

小题5:According to the doctors,what is a good way to deal with anger?(within 3 words)

股票投资的收入包括哪两部分？