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    精英家教网 > 高中英语 > 题目详情

    　　   theircountry has plenty of oil; ours has none.

    A. While　　  B. When　　 C. Before　　 D. Where

     

    答案：A
    解析：

    题意是“他们的国家有丰富的石油，而我们国家却没有”。while可作“但是，而”解

     


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