单项选择题

Which of the following might be the best title for this passage

A．Evolution of Sleep.
B．Two Types of Sleep.
C．The Original Function of Sleep.
D．Animals and Sleep.
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单项选择题
According to the passage, the free market in secondary education ______.
A．only provides consumers with more information
B．is more competitive than the higher education market
C．means there will be more intensive competition than in colleges
D．is a real surprise to Britain's recent government
单项选择题
The author of the passage feels relieved thatm ______.
A．secondary schools have to market themselves
B．most secondary schools have scarce resources of staff and money
C．the research by Open University proves that most secondary schools are the best in its area
D．schools needn't prove that they are the best
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