问题 单项选择题

因果推断中的必要条件是

A.因先于果
B.关联强度大
C.关联可重复出现
D.存在剂量反应关系
E.病因和疾病分布一致

答案

参考答案:A

完形填空
完形填空。
     How do you like T-shirts? Do you know anything about them? There is a long  1  behind the first
T-shirt and today's colorful outerwear (外套).
    Many  stories talk about the first T-shirt and  2  people wear it. One says the first T-shirt had
something to do with a war.
    In World War I, some American soldiers  3  that European soldiers' undershirts were cooler and
more comfortable. They started to wear the same kind  4  the design of the undershirts was simple
and looked like the  5  T. Americans called them T-shirts.
     By World War II, all the soldiers started to wear T-shirts as underwear.
     In the 1930s, many American students started wearing white T-shirts  6  playing sport.
     In 1951, Marlon Brando (马兰.白兰度), a very famous American actor, wore a tight-fitting (紧
身的) T-shirt in a  7 . After this many American men started to dress like him.
     In the 1970s, T-shirts became the favorite kind of clothing for young people in many countries.
At that time, it was a sign of being cool and different from  8 .
     In the 1980s, T-shirts started to be  9  in China.
     Now many young people  10  their own ideas on their T-shirts: special pictures, funny words…
( )1  A. story  
( )2  A. what    
( )3  A. found  
( )4  A. but    
( )5  A. word    
( )6  A. for    
( )7  A. picture
( )8  A. another
( )9  A. hot    
( )10 A. become  
B. history  
B. how      
B. saw      
B. so      
B. letter  
B. to      
B. novel    
B. others  
B. unpopular
B. turn    
C. passage  
C. why      
C. looked  
C. and      
C. style    
C. in      
C. film    
C. other    
C. personal
C. show    
D. road        
D. when        
D. watched    
D. because                             
D. sentence    
D. about      
D. show        
D. the other  
D. traditional
D. attract    
选择题