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问题 选择题

如图表示细胞膜的亚显微结构，下列叙述错误的是

[ ]

A．细胞膜的基本骨架是②

B．细胞膜的功能复杂程度主要与①有关

C．②是静止的，但①是运动的，所以细胞膜具有流动性

D．CO2、H2O通过细胞膜的方式相同

答案

答案：C

完形填空
完形填空。
     It seems that the cities in the future will have to change. Because the world's population   1  , there will be 
  2   people in the cities tomorrow.
     It may be   3   for any family to live in a house with land around it. There   4   enough space for them.   5   
to solve this problem may be the skyscraper city (摩天城). The highest building in the world today is in Taipei.
It's about 509 metres high. The skyscraper cities in the future will be many times   6  .
     In a skyscraper city about 250,000 people will live. Nearly a million people can   7   in four of these great
buildings. Each skyscraper city will have four towns in it and each town will have ten villages. They will live,
work and   8   their free time in them. They won't need to leave the city   9   they want to. They will be able to
move about in the city by transport controlled   10   computers. Let's imagine how the life will be then!
( ) 1. A. has grown 
(     ) 2. A. many      
(     ) 3. A. impossible
(     ) 4. A. aren't   
(     ) 5. A. A way     
(     ) 6. A. lower     
(     ) 7. A. live      
(     ) 8. A. spend     
(     ) 9. A. until     
(     ) 10. A. by         		B. is growing   
B. much          
B. possible      
B. won't be    
B. A road             
B. shorter      
B. study        
B. cost         
B. when         
B. at          		C. are growing  
C. more          
C. important     
C. won't have   
C. An answer        
C. taller        
C. work          
C. pay            
C. while         
C. with         		D. have grown    
D. larger       
D. necessary           
D. haven't    
D. An idea     
D. higher        
D. be            
D. take          
D. unless       
D. in          
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选择题

若用“

”表示氢原子，“

”表示氧原子，那么能保持水的化学性质的微粒是（　　）

A．

B．

C．

D．
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