单项选择题
A.is for the government to decide. B.should be left to specialist hospitals. C.can be left to travel companies. D.has no clear and simple answer.
A.prevent people from falling ill. B.make money out of it. C.give advice on specific countries. D.get the government to pay for it.
A.not something anyone wants to run. B.the responsibility of the government. C.administered by private doctors. D.handled adequately by travel agents.