痤疮的皮损表现不包括（） A.粉刺 B.丘疹 C.隧道 D.结节 E.囊肿

阅读理解。

     When you cut your skin, you bleed (流血). If a person loses a lot of blood (血), he will become ill and

  may die. Blood is very important. People have known that. At one time, some people even drank blood

 to make them strong!

     When doctors understand how blood goes around inside the body, they try ways of giving blood to

 people who need it. They take blood from the healthy people and give it to people who need it. This is

  called "blood transfusion". The blood goes from the arm of the sick person.

     But there are two problems. First, it does not always work. Sometimes people die when they have

  blood transfusion. Later, doctors find that we do not all have the same kind of blood. There are four

 groups - O, A, B and AB. We all have blood of one of these groups. They also find that they can give any

  kind of blood to people of group AB. But they find that they must give A group blood to A group people

  and B group blood to B group people. I have O group blood and the doctor told me that I could give

 blood to anyone else safely.

     There is another problem. To give blood of the right kind, doctors have to find a person of the right

 blood group. Often they can not find a person in time. If they have a way to keep the blood until someone

  needs it, they can always have the right kind of blood. At first they find they can keep it in bottles for

  fifteen to twenty days. They do this by making it very cold. Then they find how to keep it longer. In the

  end they find a way of keeping blood for a very long time.

     We call a place where we keep money a "bank". We call a place where we keep blood a "blood

  bank". One day, when you grow up, you may decide to give blood to a "blood bank". In this way you

  may stop someone from dying. Or perhaps one day you become ill. You may need blood. The "blood

  bank" will give it to you.

1. From the passage, we learn that sometimes people die when they have blood transfusions because they _____.

    A. are unhealthy people                      

    B. have lost a lot of blood

    C. are not given the right kind of blood          

    D. are AB group people

2. Which of the following is true?

    A. Doctors can give any kind of blood to the writer.  

    B. The writer can give blood to B group people.

    C. The writer has never had a blood transfusion.    

    D. The writer has the same kind of blood as his father.

3. People set up the "blood bank" so that they can _____.

    A. give the right kind of blood to the people who need it in time.

    B. keep different groups of blood as much as possible.    

     C. make it easier to sell or buy blood

     D. keep blood for more than twenty hundred years

4. From the last paragraph (段落) of the passage, we learn that _____.

    A. the writer thinks it's good to give blood to a "blood bank"

    B. we may become ill if we give blood to a "blood bank"

    C. many people died because they lost a lot of blood    

    D. blood is more important than money

5. The writer doesn't talk about _____ in the passage.

    A. how important blood is to us     

    B. the four groups of blood

    C. where the blood bank is    

    D. what " blood transfusion" is

生男生女（　　）决定．

A．由自家的风水决定的

B．在胎儿发育到4个月左右就开始决定

C．完全由男性决定

D．由妇女的卵细胞和哪种类型的精子结合

男婴，娩出过程顺利，胎龄240天，出生体重1.7kg，下列诊断正确的是（）

A.足月儿

B.早产儿

C.低体重儿

D.早产儿，低体重儿

E.极低体重儿

下列不属于正治法的是

A．热因热用
B．实则泻之
C．阴病治阳
D．补阴制阳
E．以寒治热

内部质量需求包括______。

A) 静态模型
B) 动态模型
C) 文档和源代码
D) 以上全部