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问题 单项选择题 B型题

根据《电力辐射防护和辐射源安全基本标准》，公众人员连续5年年平均有效剂量不应超过（）。

A.1mSv

B.5mSv

C.15mSv

D.50mSv

E.100mSv

答案

参考答案：A

阅读理解
阅读理解。

Zhang Wei		     I am a Chinese boy. I'm fifteen years old. Now I live at Wide
Street in Hangzhou, China. I like comedies and action movies.
I don't  like  thrillers or documentaries.

Han Li		     I'm a student in No. 1 High School, Hefei, China.  I'm a sixteen-year-old girl. 
 I'm kind of fat. I want to lose weight. Ioften go to the movies on weekends with my
friend Linda. I  like  action  movies  anddocumentaries, but I don't like thrillers or
comedies.

Linda		     I'm from England.  I am thesame age as Han Li. But I am heavier than she is.
We are in different classes. I enjoy making friends. I don't like  action movies or
thrillers. They are boring and scary.  I like comedies and documentaries.  They
are funny.

Tom		     I come from Paris, and I am fourteen years old. I'm tall and
thin.  Zhang  Wei  is  my  classmate. I like action movies and comedies.  
I also  like  thrillers.  But I  don't  likedocumentaries.

1. Where is Zhang Wei from?         
A. China.                  
B. England.         
C. America.               
D. Paris.
2. How old is Linda?         
A. 14.        
B. 15.       
C. 16.    
D. 17
3. When does Han Li go to the movies?         
A. On Monday.         
B. On Wednesday.         
C. On Friday.         
D. On Saturday or on Sunday.
4. Who likes thrillers?         
A. Zhang Wei.            
B. Han Li.       
C. Tom.                       
D. Linda.
5. Which of the following is WRONG?         
A. Han Li is Linda's good friend.         
B. Tom is fatter than Zhang Wei.         
C. Zhang Wei and Han Li like action movies.         
D. Linda and Tom like comedies.
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单项选择题

6×7钢丝绳与白棕绳的同径强度比为（）

A.1：5

B.1：8

C.5：1

D.7.4：1
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