问题 选择题

六种短周期元素A、B、C、D、E、F的原子序数依次增大, C和F同族,B、C、D、E的离子均具有相同的电子层结构,E在同周期元素中离子半径最小。A和B、C、F均能形成共价型化合物,A和B形成的化合物Y在水中呈碱性,D和F形成的化合物在水中呈中性。下列说法错误的是

A.B、D离子的半径大小是B>D

B.C的单质能将F的单质从EF3的溶液中置换出来

C.化合物AC的沸点比化合物AF的高

D.化合物AF与化合物Y可形成含有共价键的离子化合物

答案

答案:B

题目分析:A和B形成的化合物Y在水中呈碱性,A是H、B是N;A和D同族,D在N的后面,是Na,A和B、C、F均能形成共价型化合物,B、C、F均是非金属;D和F形成的化合物在水中呈中性,F是Cl(NaCl溶液为中性);C和F同族,C是F;B、C、D、E的离子均具有相同的电子层结构,E在同周期元素中离子半径最小,E是Al。A.B、D离子的半径大小是N3->Na+,正确(阴盛阳衰);B.C的单质(F2)直接与H2O反应,不能将Cl2从AlCl3的溶液中置换出来;C.化合物AC的沸点比化合物AF(HCl)的高,前者分子间可以形成氢键;D.化合物AF(HCl)与化合物Y(NH3)可形成含有共价键的离子化合物NH4Cl,正确。

单项选择题 A1型题
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完形填空
     Terry was a middle-aged leather trader whose repeated failure in career made him a depressed man,
often___1___that he had been cheated by others. One day he told his wife he was so___2___ with the
city that he had to leave.
     So his family moved to another city. It was the evening of a weekend,when Terry and his wife were
busily __3___ in tidying up their new home, the light suddenly ___4___. Terry was regretful to have
forgotten bringing along ___5___ and had to wait __6__ in a low mood. Just then he heard light and
hesitant __7__ on his door that were clear in the ___8___night.
    "Who' s it?" he wondered. Terry had no __9___ in the new city, and this was the moment he especially
hated to be __10___. So he went to the door and opened it __11___ . At the door was a little girl,  shyly
asking,  " Sir,  do you have candles? I'm your neighbor. " " No, "  answered Terry in anger and shut the
door__12___ .  " What a nuisance(讨厌) ! "  he complained over it with his wife.   " No sooner had we
settled down than the neighbor came to___13____ things. "
    After a while, the door was knocked again. He opened it and found the same girl outside___14____this
time she was___15____ two candles,  saying,  " My grandma told me the new neighbor downstairs might
need candles. She ___16____ me here to give you these. " Terry
was ___17____ dumb by what he saw.
     At that moment he suddenly realized what caused his __18___ in life. It was his ___19____ and
harshness with other people. The person who had cheated him in life was  __20___ nobody else but
himself, for his eyes had been blurred(蒙蔽) by his unsympathetic mind.
( )1 .A. complaining    
( )2. A. inspired        
( )3. A. abandoned      
( )4. A. went on        
( )5 .A. candles        
( )6. A. happily        
( )7. A. steps          
( )8. A. dark            
( )9. A. acquaintances  
( )10. A. offered        
( )11. A. cheerfully    
( )12. A. gently        
( )13. A. lend          
( )14. A. And            
( )15. A. holding        
( )16. A. suggested      
( )17. A. frightened    
( )18. A. failure        
( )19. A. warmth        
( )20. A. doubtfully    
B. reflecting      
B. disappointed    
B. wasted          
B. went down      
B.  matches        
B. patiently      
B. words          
B. quiet          
B. enemies        
B. disturbed      
B. intently        
B. deliberately    
B. sell            
B. But            
B. hiding          
B. forbad          
B.  disturbed      
B. success        
B. coldness        
B. hardly         
C. praying        
C. thrilled        
C. absorbed        
C. went out        
C. lights          
C. willingly      
C. knocks          
C. noisy          
C. neighbors      
C. embarrassed    
C. impatiently    
C. slightly        
C. purchase        
C. So              
C. fetching        
C. sent            
C.  confused      
C. complaint      
C. kindness        
C. actually        
D. pretending          
D. encouraged          
D. occupied            
D. went through        
D. flashlights        
D. helplessly          
D. screams            
D. crowded            
D. bosses              
D. panicked            
D. relevantly          
D. abruptly            
D. borrow              
D. For                
D. seeking            
D. forced              
D. struck              
D. determination      
D. sympathy            
D. specifically