单项选择题

Revenues from oil are the biggest single ______ in the country's income.

A．company
B．companion
C．component
D．compound
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单项选择题
He thought the lunch was terrible, and the same ______ all the rest of us too.
A．goes after
B．goes at
C．goes for
D．goes with
单项选择题
What is the main topic of this passage
A．Acceleration of industrial growth.
B．Process of suburbanization.
C．Urban crowdedness.
D．Industrial development in the U.S.
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