问题 选择题

下列关于病毒的叙述中,不正确的是(  )

A.病毒比细菌还小

B.病毒可生活在植物细胞内

C.病毒的遗传物质存在于细胞核内

D.病毒的形态有杆形、球形、蝌蚪形

答案

答案:C

题目分析:病毒没有细胞结构,只有蛋白质外壳和内部的遗传物质,所以“病毒的遗传物质存在于细胞核内”不正确,选C

完形填空
完形填空。
     If you leave something important on a bus or an underground train while traveling around London, you
should  1  the London Transport Lost Property (财物) Office in central London.
     "We've got  2  here, but it's difficult to imagine  3  people lose some things," says manager Maureen
Beaumont,  4  a box of false teeth."How can anyone  5  their teeth on a bus?"
     "  6  there's a name and address somewhere on the item (物品), we try to contact (与取得联系) the  7  
and  return it. Visitors to London are always  8  to get their property back. If we  9  find the owner anywhere,
we  10  the item here for three months and hope that  11  will come into the office to claim (认领) it. If  12 
 comes to get the item in that time, we  13   it." 
     "It's 14  job. People lose some unusual things and they're  15  pleased when they come to the office and
find them."
( )1. A. everything
( )2. A. everything
( )3. A. what      
( )4. A. holding   
( )5. A. forget    
( )6. A. If        
( )7. A. owner     
( )8. A. afraid    
( )9. A. may not   
( )10. A. get      
( )11. A. no one   
( )12. A. no one   
( )13. A. sell     
( )14. A. a boring 
( )15. A. hardly   
B. visit         
B. nothing       
B. where         
B. giving        
B. have          
B. Where         
B. bus driver    
B. impossible    
B. can't         
B. return        
B. anyone        
B. anyone        
B. keep          
B. an interesting
B. ever          
C. see        
C. anything   
C. how        
C. asking     
C. keep       
C. Because    
C. manager    
C. interesting
C. can        
C. keep       
C. someone    
C. someone    
C. buy        
C. a dangerous
C. always     
D. watch       
D. good things 
D. whether     
D. losing      
D. leave       
D. Whether     
D. train driver
D. surprised   
D. may         
D. find        
D. everyone    
D. everyone    
D. return                                         
D. an interested
D. never       
选择题