问题 选择题

下列关于输血的说法中错误的是(  )

A.成分输血既提高了输血治疗的效果,又避免了血液浪费

B.健康成年人每次献血200-300毫升不会影响健康

C.AB血型的人只能给同血型的人输血

D.大量输血时,如无同型血,O型血的人是万能输血者

答案

A、输血不一定非输全血,临床上要根据病人病情的需要,有针对性地选用不同的血细胞成分或血浆成分输入病人体内.不符合题意.

B、成年人血量约为体重的7~8%,正常的血量,是人体正常代谢活动的基础,失血超过30%,即超过1200~1500毫升,由于血量不足于维持正常的血容量和血压,会危及生命;失血不超过血量的10%,即400毫升,人体将储备血液动员出来参加循环,其丧失的成分,也会短时间内得到补充恢复正常.我国实行义务献血,健康成年人每次献血200-300毫升是不会影响健康的.不符合题意.

C、输血以输同型血为原则.例如:正常情况下A型人输A型血,B型血的人输B型血.但在紧急情况下,如果实在没有同型血,AB血型的人可以接受任何血型,但只能给同血型的人输血.不符合题意.

D、O型血可以输给任何血型的人,称为万能输血者.但是,异型者之间如果输入的O型血量较大,同样可以发生严重的输血反应,由此可见,“万能输血者”并非万能,它同样潜伏着严重的危险性.符合题意.

故选:D

阅读理解

阅读下文,从各小题所给的四个选项中选出能回答所提问题或完成所给句子的最佳答案。

     Read the passages below, then think about what they will do if they have 5 million.

     Alan is a kind old man. He has no children but he likes children very much. He said he would give 3

 million to the poor children in the mountains if he got 5 million.

     John can make shoes and his skills are very good. He is making a living-making shoes for others. He is

 very tired every day because he has to work late. He would start. his own shoe shop and factory if he got

  5 million.

     Tim is a young man. He is a bus driver. He is active and he likes swimming very much.  Now he has to

  rent a room to live because he can't afford to buy a house. He hopes he can buy a house with a swimming

  pool.

     Jack is a teacher.  His house is far away from his school. He has to get up very early to catch the

 earliest bus, or he will be late for school. He said he didn't need to get up so early if he had a car.

Sam is a man in the mountain. His hometown is very poor. People have to buy everyday things and other

 things from a shop far away and carry them on their back home because there is no road there. He wants

 to build a road for his hometown.

1. Match the names with the correct pictures. Write down the letters from the pictures above.

    Alan _____

    John _____

    Tim _____

    Jack _____

    Sam _____

2. What's John's problem now?

    A. He is good at making shoes.

    B. His skills are very well.

    C. He has to make shoes in his own company.

    D.  He works so late that he is too' tired.

3. What's Tim like?

    A.  He has to rent a room to live in.

    B. He is a bus driver.

    C. He likes swimming very much.

    D. He is an active young man.

4. How does Jack go to work every day?

    A. By bus.    

    B. By car.    

    C. On foot.    

    D. By bike.

5. Where does Sam live now?

     A. In a big city.            

     B. In a town.

    C. In a rich village.        

    D. In a poor mountain.

判断题