单项选择题

Where did they make the findings

A. In the NASA headquarters.
B. In a lake.
C. In a national park.
D. In North Carolina.

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单项选择题

If one is entitled to treatment from the National Health Service, he is advised to ______ first of all

A. register a course of half a year.
B. register at any hospital.
C. register with a doctor.
D. register with the local city council:

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