单项选择题

The gap between those at the lowest level and those at the highest level of income had increased, and is continuing to increase.

A．substantially
B．successfully
C．succinctly
D．sufficiently
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Scholarships are too few to ______ the high-school graduates who deserve a college education.
A．meet
B．accommodate
C．compromise
D．adopt
单项选择题
If the straggle for a sustainable society______, we must have some vision of what we are aiming for.
A．is to succeed
B．has succeeded
C．succeeds
D．succeeded
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