简述常用的红细胞制品的临床应用。

阅读理解。

     Basketball is a young game.  In the year of 1891, a famous college was having some trouble with its

boy students.  The weather was bad. They couldn't play outside. So they were unhappy.  Sometimes

they even got into fights.

    Finally, some teachers asked Dr Naisimth to invent a game so that the students might have something

to play indoors.

    Dr Naisimth thought for a few days and invented a kind of ball game.  It was a fast, exciting game with much moving and passing of the ball. It was played between two teams.  In order to make a score, the

ball had to be thrown into a basket ten feet above the floor on the wall.

    At first, Dr Naisimth had planned to have the ball thrown into a box.  As' he couldn't find boxes of the

right size,  he had to use fruit basket instead.  That is how the game got its name basketball. The history

of this game is over 100 years.   

根据短文内容，选择正确的答案。

1. Basketball is _____ game.

A. a difficult    

B. an easy    

C. a young

2. Who invented the basketball game?

A. Dr Brown.    

B. Dr Naisimth.    

C. Mr Black.

3. Basketball was invented for the students   ___ in bad weather.    

A. to play happily indoors

B. to play outside

C. to fight indoors

4. Basketball game was played        _.    

A. between two teams  

B. among three teams    

C. by a team

5. Basketball has its history of  __   years now.

A.10    

B. more than 100    

C. less than 100

如图所示，是几个焦距不同的凹透镜和凸透镜，现用一个能发出平行光束的光源和一组眼睛模型来探究矫正视力的方法．

（1）模型中的凸透镜相当于______，烧瓶的后壁相当于______，烧瓶中的蓝色透明液体相当于人眼中的玻璃体．

（2）用平行光束照射每个眼睛模型，根据光束聚焦位置可以确定甲是______眼模型，乙是______眼模型，丙是______眼模型．

（3）在探究近视眼的矫正过程中，你认为在______模型前加一个______合适的______镜，能使光束会聚在视网膜上．

（4）在探究远视眼的矫正过程中，你认为在______模型前加一个______合适的______镜，能使光束会聚在视网膜上．

新安设的刮板输送机在一周内必须及时紧链。

战国时代，（）的出现则标志着我国诗歌从民间集体歌唱向诗人独立创作的更高阶段的发展。

A.《诗经》

B.《楚辞》

C.《论语》

D.《古诗十九首》

社会主义改造基本完成后，中国人民面临的主要任务是（）

A.进一步推进工业化、现代化建设

B.进一步推进政治民主化建设

C.进一步推进文化建设

D.进一步推进党的建设