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【单选题】
左旋多巴治疗帕金森病的机制是A.
左旋多巴在脑内转变为DA，补充纹状体内DA不足
B.
提高纹状体中的乙酰胆碱的含量
C.
提高纹状体中5-HT含量
D.
降低黑质中乙酰胆碱的含量
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】Part II Oral practice I . Match the questions with the answers.
A.
I really don’t like it.
B.
Twice a week.
C.
He likes to play basketball.
D.
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E.
She has few friends. 1.What does he like to do on weekends? 2.Where are they going to go dancing? 3.Why does she usually go shopping alone? 4.How often does he go swimming? 5.What do you think of the English song?
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A.
I 1 +I 2 - I 3 结果等于或近似于零
B.
I 1 +I 2 +I 3 结果等于或近似于零
C.
I 1 - I 2 +I 3 结果等于或近似于零
D.
- I 1 - I 2 - I 3 结果等于或近似于零
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