Researcherssaytheyhaveachievedamajor

問題詳情：

 Researchers say they have achieved a major_______in cancer treatment, which brings hope to cancer patients.

A. advantage          B. reputation

C. breakthrough       D. assumption

【回答】

 【解析】選C。句意：研究者們説他們在癌症治療方面取得了很大的突破，給癌症病人帶來了希望。breakthrough意為“突破”，符合語境。advantage優勢；reputation名聲；assumption設想。

知識點：名詞

題型：選擇題