In the disciplines underlying our high-tech economy, America is steadily losing its global edge.

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问题 In the disciplines underlying our high-tech economy, America is steadily losing its global edge.

选项 A、border
B、superiority
C、appeal
D、territory

答案B

解析 该句意为:在维持高科技经济运行的学科方面,美国正在逐渐失去自己的全球优势。edge:边缘,优势;border:边境,边界,分界线;superiority:优势;appeal:魅力,呼吁;territory:领土,领地,领域。
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