单项选择题

It seems that Opel’s chief engineer is ______ the development of alternative energies.

A．optimistic about
B．pessimistic about
C．not enthusiastic about
D．devoted to
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单项选择题
Governments have taken all of the following measures EXCEPT ______ to combat crime.
A．increasing the size of the police force
B．providing the police with better equipment
C．passing more severe crime laws
D．educating the public through TV programs
单项选择题
The unitary government system is the best choice in ______.
A．multinational countries
B．culturally homogeneous countries
C．communist countries
D．countries with large territories
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