Which of the following can we learn from health care insurance?
A、Different kinds of health care insurance cover expenses of different medical services.
B、All the health insurance policies cover regular visits to a doctor.
C、An insurer needn't pay for the medical services he/she has received.
D、Hospitals don't charge fees for meals and room in the hospitals.
【正确答案】：A
【名师解析】:选项A正确，因为它指出不同的健康保险计划覆盖不同医疗服务的费用。这表明健康保险有多种类型，每种类型可能针对不同的医疗服务提供保障。例如，一些保险可能只覆盖紧急医疗服务，而其他保险可能包括预防性护理或特定疾病治疗的费用。选项B错误，因为并非所有健康保险政策都包括定期看医生的覆盖范围。选项C错误，因为保险公司通常需要为被保险人接受的医疗服务支付费用。选项D也是错误的，因为医院通常会为住院期间的餐食和住宿收取费用。
