To survive in the fierce competition, we must _________ the quality and variety of our products to the world-market demand.
A、 improve
B、 guarantee
C、 enhance
D、 adjust
【正确答案】：D
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To survive in the fierce competition, we must _________ the quality and variety of our products to the world-market demand.
A、 improve
B、 guarantee
C、 enhance
D、 adjust
【正确答案】：D
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