根据所掌握的文化或背景知识，选择正确答案。

1. The meaning of NBA is               .                      [ ]

A. 英国篮球协会      

B. 英国足球协会      

C. 美国足球协会    

D. 美国篮球协会      

2. There are five rings with different colors on the flag of the Olympic Games. They are green, blue , red ,                  and                .[ ]

A. yellow; black  

B. yellow; purple  

C. black; pink  

D. pink; grey

3. The motto of the Olympic Games is  "                 " .[ ]

A. Faster; better; stronger    

B. Faster; higher; stronger  

C. Faster; earlier; stronger  

D. Faster; higher; bigger

4. The modern Olympics origimated(起源) in                .[ ]

A. China    

B. the USA  

C. Athens  

D. the UK

5. SARS is a kind of                .[ ]

A. food  

B. flower  

C. disease  

D. plant

6. It is bad for your health to eat           .[ ]

A. fruits  

B. vegetables  

C. milk  

D. potato chips

Crohn病常见的肠外表现是

A．肾炎

B．系统性红斑狼疮

C．关节炎

D．糖尿病

E．结节病