对脑血管有良好扩张作用的是（）
A.维拉帕米
B.氨氯地平
C.尼莫地平
D.地尔硫
E.硝苯地平
参考答案：C
情景交际：根据上下文补全对话。
A: 1______ Shenzhen? Do you know?
B: Er, 2______ 3______ near Taiwan?
A: No, 4______ near Hong Kong.
B: Where's Macao?
A: 5______ 6______ near Hong Kong, 7______?
B: Yes, it 8______.
A: Where's Hong Kong? Is it 9______ Guangdong?
B: Oh, 10______, it's an SAR (特别行政区).
循环水场风机电机为（）电机。
