问题 选择题

调节人体水分和无机盐平衡最重要的器官是(  )

A.汗腺

B.肾

C.大肠

D.肺

答案

人体的泌尿系统主要由肾脏、输尿管、膀胱和 * * 等组成,肾脏是形成尿液的器官,是泌尿系统的主要部分,肾由大约一百万个肾单位组成,肾单位由肾小体、肾小管组成,肾小体由肾小囊、肾小球组成.当血液流经肾时,经过肾小球的过滤作用以及肾小管的重吸收作用,将多余的水、无机盐和尿素等从血液中分离出来形成尿液,使血液得到净化;输尿管把尿液运送到膀胱;膀胱暂时储存尿液;最后由 * * 排出尿液.尿的成分包括多余的水分、无机盐以及尿素尿酸等物质,这些物质在人体积聚多了对人体会造成危害,因此必须排尿.可见排尿对于人体进行正常生命活动具有重要的意义,不仅可以排出废物,而且还可以调节体内水和无机盐的平衡,维持组织细胞的生理功能.所以调节人体水分和无机盐平衡最重要的器官是肾.

故选:B.

阅读理解

阅读下面的短文,并根据短文后的要求答题。(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 ______________.

     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 release the same hormones(荷尔蒙). 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 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.

1. What is the best title of the passage? (please answer within 10 words.)

______________________________________________________________

2. Which sentence in the passage can be replaced by the following one?

If you don't express your anger, you may have more chances of having high blood pressure.

_____________________________________________________________________________

3. Please fill in the blank with proper words or phrases to complete the sentence. (please answer within 10 words.)

_____________________________________________________________________________

4. What did you do when you became angry before? (please answer within 30 words.)

____________________________________________________________________________

5. Translate the underlined sentence into Chinese.

________________________________________________

论述题