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    精英家教网 > 高中英语 > 题目详情
    The new machine, if 　　　 properly, will work for at least ten years.
    A．used B．useC．using D．being used
    A

    试题分析：句意：那台新的机器如果被合理使用的话，它将能够再用至少10年。这里if后是省略句，完整的是if it is used properly，当从句的主语与主句的主语一致，并且从句的谓语动词有be动词，这时把从句中的be动词与主语都省去，这里是把if从句放在了句中，影响了考生的判断，故选A。
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