单项选择题

In the U. S. , it is common that each state ______ its power to an elected or appointed state board of education.

A．exercises
B．applies
C．adjusts
D．delegates
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Water is to fish ______ air is to man.
A．that
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C．like
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Most people believe that the governmental departments should give ______ service at minimumcost.
A．best
B．most
C．utmost
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