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

This year's sterling depreciation, only a few aver, has no impact on the economy at large（）

A．increase in value
B．fall in value
C．lack of use
D．drastic change

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