溴隐亭治疗帕金森病的作用机制是
A．减少多巴胺降解
B．抑制多巴胺再摄取
C．直接激动多巴胺受体
D．提高脑内多巴胺浓度
参考答案：C
There are about three _____ people watching the program, and _____ of'them are from foreign
countries. [ ]
A. million; two million
B. millions; two millions
C. million; two millions
D. millions, two million
我国自行研制的世界首艘万吨级医院船是：（）
A、866船
B、832船
C、830船
D、881船
