问题 单项选择题

抽动秽语综合征的可能发病机制是纹状体中存在()

A.多巴胺含量增多,多巴胺受体功能减退

B.多巴胺含量增多,多巴胺受体超敏

C.多巴胺含量减少,多巴胺受体超敏

D.多巴胺含量减少,多巴胺受体功能减退

E.多巴胺含量正常,乙酰胆碱含量减少

答案

参考答案:B

阅读理解

There is a new park near Andy’s home. It’s fine today. Andy and his family are in the park now. On their left, there is a café. On their right, there is a big lake. There are many flowers and trees around the lake. There’s a small hill behind the lake. Near the lake, there are two signs. One says, “Don’t swim in the lake!” The other says, “No fishing!” But you can go boating on the lake. There is a beautiful garden in the middle of the park. There are green grass and beautiful flowers in it. There are some small shops between the lake and the garden. The park is so nice. Andy and his family like it very much.

(   )11. The park near Andy’s home is ____________.      .

A. new and beautiful    B. old and beautiful   C. clean and new   D. old and clean

(   )12. Is there a café in the park? ---_____________.      

A. Yes, there isn’t.      B. No, there isn’t.   C. Yes, there is.    D. No, there is.

(  )13. People can________ on the lake.

A. swim                 B. fish                C. boat              D. play

(   )14. The shops in the park are not _____________.      .

A. small                  B. big                 C. good            D. pretty

(   )15. Do Andy and his family like the park?  --__________.    

A. Yes, they don’t.                      B. No, they do.      

C. Yes, very much.                    D. No, they don’t.

单项选择题