2. 外语
  3. To survive in the intense trade competition between countries, we must ______the qualities and varieties of products we make to

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

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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 (gear使适应，后接to)。句意为：为了在国家之间激烈的贸易竞争中幸存下来，我们必须使我们生产的产品的质量和品种适应世界市场的需求。A．improve改善；B．enhance提高，增进，增强；C．guarantee保证，担保。
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