第20题: [单项选择]Of the following people, who are not involved in the program A. Cisco System employees. B. Advice nurses in the clinic. C. Doctors at three local hospitals. D. Oracle at three local hospitals. 参考答案:B 答案解析:第四段最后一句告诉我们:在线看病只提供了一条介于给门诊护士打电话和去诊所看病之间的狭窄的服务范围。所以正确答案是B(诊所的门诊护士)。