It will be many years the doctors and medical scientists can find for cancer.A．since; curesB．when; treatmentsC．before; curesD．until; treaments 题目和参考答案——青夏教育精英家教网—

题目内容

It will be many years ______ the doctors and medical scientists can find _____ for cancer.

A．since; cures	B．when; treatments
C．before; cures	D．until; treaments

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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