To survive in the intense trade competition between countries,we must_____the qualities and varieties of products we make to the

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问题 To survive in the intense trade competition between countries,we must_____the qualities and varieties of products we make to the world market demand.

选项 A、improve
B、enhance
C、guarantee
D、gear

答案D

解析 本题意为“为了在国家之间激烈的贸易竞争中幸存下来。我们必须使我们的产品质量和品种适应世界市场的需求”。D项gear to“使适应”符合题意。其他三项improve“改善”; enhance“提高,增进,增强”;guarantee“保证,担保”都不正确。
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