In Britain there is a National Health Service (NHS) which is paid for by taxes and National Insurance, and in general people do not have to pay for medical treatment. Every person is registered with a doctor in his or her local area, known as a general practitioner (全科医生) or GP. This means that their names are on the GP's list, and they may make an appointment to see the doctor or may call the doctor out to visit them if they are ill. People sometimes do have to pay part of the cost of drugs that the doctor prescribes. GPs are trained in general medicine but are not specialists in any particular subject. If a patient needs to see a specialist doctor, they must first go to their GP and then the GP will make an appointment for the patient to see a specialist at a hospital or clinic. Although everyone in Britain can have free treatment under the NHS, it is also possible for him to have treatment done privately, for which he has to pay. Some people have private health insurance to help them pay for private treatment. Under the NHS, people who need to go to hospital may have to wait for a long time on a waiting list for their treatment. Anyone who is very ill can call an ambulance (救护车) and get taken to hospital for free urgent medical treatment. Ambulances are a free service in Britain.
单选题
In Britain, the National Health Service refers to ______.
【正确答案】
C
【答案解析】解析：根据题目中的the National Health Service定位到第一段。该段第一句的后半部分谈到，在这种服务下人们不需要为医疗付费；然后该段详细介绍了这种服务的运行情况：如何看医生，如何看专家门诊等等。因此可推断出NHS是一种医疗体系，四个选项中只有C项最符合文意。
单选题
Under the National Health Service, British citizens ______.
【正确答案】
A
【答案解析】解析：还是根据题目中的the National Health Service定位到第一段。根据该段第二句可知，每个人都要在医生处登记注册(registered with a doctor)；另外，该段第一句也告诉我们这种服务是以税收和国民保险来支持运转的，涉及到英国的每一位公民。因此可以断定应该都要在全科医生处登记注册，A项为正确答案。
单选题
People buy private health insurance in order to ______.