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问题 选择题

下列关于铁的化学性质的叙述正确的是（　　）

A．铁的化学性质不活泼

B．铁在空气中燃烧生成四氧化三铁

C．铁生锈属于缓慢氧化

D．铁与硫酸铜反应生成硫酸铁和铜

答案

A、铁是一种比较活泼的金属，能够跟多种物质发生反应，故A错

B、铁丝可以在氧气中燃烧生成四氧化三铁，但是在空气中不能够燃烧，故B错

C、铁在潮湿的空气中能够发生缓慢氧化生成氧化铁，故C对

D、铁可以与硫酸铜溶液发生置换反应生成铜和硫酸亚铁，而不是生成硫酸铁，故D错

故选C

完形填空
完形填空。
     There was once a lonely girl who wanted love very much. One day while  she was walking in the
forests, she found two dying birds. She took them home and put them in a small ___1___. She was
happy to have two "friends". She __ 2 __ them with love and the birds grew strong. One day the girl
happened to leave the door of the cage open. The larger and the___ 3___ of the two flew out of the
cage. The girl was afraid that it would fly away. She caught it quickly, she felt glad that she caught the
bird before it could fly away. Suddenly she couldn't   _4 __ a sound from the bird. When she opened
her hand, the bird  was  already dead.   Her_  5___ killed the bird!   Then she noticed ___ 6 __bird
jumping up and down___ 7 __the cage. She could feel its great need for freedom(自由) . It wanted
to fly into the clear, blue __8___. So she lifted  it  from the cage and let it fly away highly.   The  bird
circled once, twice, and three times. The girl ___ 9 __as the bird flew.   She didn't  care about losing
the bird any more. She wanted it to be happy. Suddenly the bird flew closer and landed softly on her
shoulder. It sang the ___10 __song she had ever heard.
     The fastest way to lose love is to hold on it too tightly, and the best way to keep love is to give it
wings.
( ) 1. A. box        
( ) 2. A. looked for
( ) 3. A. stronger  
( ) 4. A. listen    
( ) 5. A. love      
( ) 6. A. one        
( ) 7. A. outside    
( ) 8. A. sea        
( ) 9. A. watched    
( ) 10.A. worst      		B. basket    
B. looked at  
B. lazier    
B. make      
B. joke      
B, the other  
B. inside    
B. hill      
B. saw        
B. oldest     		C. cage        
C. looked after
C. weaker      
C. describe    
C. luck        
C. another    
C. beside      
C. forest      
C. guided      
C. newest      		D. bag          
D. looked over  
D. smaller      
D. hear        
D. wish        
D. other        
D. behind      
D. sky          
D. escaped      
D. sweetest    
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单项选择题

双双从小父母双亡，与奶奶相依为命，家里的生活很困难，几天前奶奶也生病去世了，双双没有能力处理奶奶的后事，因此找到社会工作者，希望能够得到帮助。此时，双双处于危机发展的( )阶段。

A．危机发生

B．应对

C．解决危机

D．恢复期
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