单项选择题

Under the National Health Service, British citizens （）.

A．are all registered with a general practitioner
B．do not need to buy private health insurance
C．can only go to see a general practitioner
D．cannot call in a general practitioner

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单项选择题

In Britain, the National Health Service refers to （）.

A．a local hospital
B．a medicine supplier
C．a medical care system
D．an insurance company

单项选择题

The cost of traveling around the eight European countries can run as high ______ $2,000.

A．to
B．as
C．by
D．for