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    【题目】At first, our company was very small, but after purchasing some smaller ones, it soon __________ into a large one.

    A. lengthened B. extended

    C. stretched D. expanded

    【答案】D

    【解析】句意:起初，我们公司非常小，但在购买了一些更小的公司后,很快成为一个大公司。lengthen加长，延长；extend延长，延伸；stretch变长，拉紧；expand扩大，膨胀。

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