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问题 单项选择题

包块进行性增大的是（）。

A．腹股沟疝

B．精索鞘膜积液

C．隐睾恶变

D．隐睾

E．淋巴结炎

答案

参考答案：C

完形填空
完形填空。
     One bright summer day, boys and girls were having a walk with their teacher near the zoo. They
walked and   1   happily.
     After a while, they came to a   2   over the river, and they took turns to go across it. When they just
reached the middle, there came a great shout of warning behind them. The teacher told them   3   , and
she turned back and listened. When she heard the voice"   4   !", she knew what would happen. Before
she could do anything she saw a wolf   5   towards the bridge.
     "Children," said the teacher,"Don't worry, don't move   6   cry." Then she ran to the back of the
children   7   the wolf should meet her first.
     The wolf came, and its mouth was widely open. When it passed the teacher, the wolf saw a boy. It
stopped and wanted to snap (咬) at the boy. When the teacher   8   this, she put her right hand into the
wolf's   9   quickly. The wolf was so frightened, and it  10  at once.
      When people heard of it, they all spoke highly of her bravery (勇敢).
( )1. A. singing
( )2. A. garden 
( )3. A. to cry 
( )4. A. Snake 
( )5. A. running 
( )6. A. or     
( )7. A. too to 
( )8. A. warned 
( )9. A. ears   
( )10. A. died  		B. sing     
B. bank     
B. to shout  
B. Dog     
B. joining   
B. yet       
B. so that   
B. seemed   
B. body     
B. fell over		C. sang      
C. village    
C. not to cry 
C. Bear       
C. arriving  
C. so          
C. as well as  
C. saw        
C. legs    
C. fell down 		D. to sing   
D. bridge      
D. to meet     
D. Wolf         
D. standing  
D. for           
D. as long as  
D. watched       
D. mouth     
D. ran away 
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填空题

硫酸锌可作为食品锌强化剂的原料。工业上常用菱锌矿生产硫酸锌，菱锌矿的主要成分是ZnCO3，并含少量的Fe2O3 、FeCO3 、MgO等，部分生产工艺流程图示意如下：

（1）将菱锌矿研磨成粉的目的是                        。

（2）工业流程中必须将Fe2+氧化成Fe3+后再加以分离。在实验室中可以用H2O2，在酸性条件下完成这个转化，请写出相应的离子方程式：

                                                       。

（3）针铁矿的组成元素是Fe、O和H，化学式量为89，化学式是         。

（4）工业上从“滤液2”制取MgO过程中，合适的反应物是           （选填序号）。

a．大理石粉       b．石灰乳       c．纯碱溶液        d．烧碱溶液

（5）“滤液3”之后的操作依次为           、           、过滤，洗涤，干燥。
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