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    精英家教网 > 高中英语 > 题目详情
    It will be many years ______ the doctors and medical scientists can find _____ for cancer.
    A．since; curesB．when; treatments
    C．before; curesD．until; treaments
    C
    第一空考查连词，since 自从，when 当什么的时候，before 在什么之前，才，就，until直到，第二空考查短语：cures for cancer癌症的治疗方法，句意：许多年医生们和医疗科学家才找到了癌症的治疗方法。所以选C。
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