单项选择题

It can be inferred from the passage that doctors are able to determine hospital policies because______.

A．it is doctors who generate income for the hospital
B．a doctor is ultimately responsible for a patient's health
C．most of the patient's bills are paid by his health insurance
D．some patients might refuse to accept their physician's advice
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单项选择题
According to the passage, what is the outlook of Britain's food production
A．An expansion of food production was continuing.
B．It looks depressing despite government guarantees.
C．British food producers would receive more government financial support.
D．The fall in world food prices would benefit a lot the consumers in Britain.
单项选择题
The decrease in world food prices was a result of______.
A．the over production on the part of the main food-exporting countries
B．a sharp fall in the purchasing power of the consumers
C．a sharp rise in the prices of home-produced food
D．a sharp fall in the cost of food production
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