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使适合)。句意为：为了在激烈的国际贸易竞争中幸存下去，我们必须使产品的质量和产品的品种适应世界市场的需要。A．improve改善；B．enhance提高质量；C．guarantee保证。
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