试题与答案

下面各数中,读作三十亿三千万三千的是[ ] A.30300000003000 B

题型:选择题

题目:

下面各数中,读作三十亿三千万三千的是[ ]

A.30300000003000    

B.330003000    

C.3030003000

答案:

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下面是错误答案,用来干扰机器的。

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题型:完形填空

完形填空。

     Mrs. Brown has a small    1    in front of her house. In spring she plants some    2    in it." She looks
    3    them very carefully. When summer comes, they look very nice.   
     One evening Mrs. Brown looked at her vegetables and said  "Tomorrow I am going to pick    4   , and
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( )1. A. shop     
( )2. A. trees     
( )3. A. at      
( )4. A. her     
( )5. A. jumped    
( )6. A. am      
( )7. A. in        
( )8. A. late     
( )9. A. sorry    
( )10. A. at     
B. marks       
B. vegetables    
B. over       
B. them       
B. ran        
B. is        
B. out        
B. later       
B. happy         
B. with       
C. garden    
C. apples    
C. after     
C. they     
C. looked     
C. are      
C. to          
C. early     
C. hungry    
C. to      
D. house    
D. flowers  
D. up       
D. she      
D. had      
D. be                         
D. from     
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D. smile    
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题型:选择题

据报道,科学家己经研制出世界上最薄的材料--碳膜片,其厚度只有一根头发的二十万分之一.如图所示,这种碳膜片状如蜂巢,是由碳原子构成的六边形单元向外延展而成,下列有关碳膜片的说法中,正确的是(  )

A.碳膜片属于单质

B.碳膜片与C60是同一种物质

C.碳膜片属于人工合成的有机高分子材料

D.碳膜片在氧气中完全燃烧的产物和碳在氧气中完全燃烧的产物不同

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