单项选择题

To survive in the intense trade competition between countries, we must ______ the qualifies and varieties of products we make to the world market demand.

A．improve
B．enhance
C．guarantee
D．gear
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单项选择题
Big businesses enjoy certain ______ that smaller ones do not have.
A．transactions
B．privileges
C．subsidies
D．substitutes
单项选择题
The ______ of the occasion was spoiled when she fell down the steps.
A．privacy
B．dignity
C．morality
D．secrecy
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