While a full understanding of what causes the disease may be several years away, ______ leading to a successful treatment could come much sooner. "A. a distinction B. a breakthrough C. an identification D. an interpretation "

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题目内容（西安交通大学--英语三）

While a full understanding of what causes the disease may be several years away, ______ leading to a successful treatment could come much sooner. "A. a distinction B. a breakthrough
C. an identification D. an interpretation
"

参考答案

随机试卷

平顶山学院-金融会计(高起本)