单项选择题

In order to improve our standard of living, we have to accelerate production.

A．step up
B．decrease
C．stop
D．control
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An important part of the national government is the Foreign Service, a branch of the Department of State.
A．a unity
B．a division
C．an embassy
D．an invasion
单项选择题
The poet William Carlos Williams was a New Jersey physician.
A．doctor
B．professor
C．physicist
D．resident
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