【题目】He is a breast cancer_________, who has devoted all his time and energy to studying it.
A.specialistB.physicianC.physicistD.surgeon
在线课程【答案】A
【解析】
考查名词词义辨析。句意：他是一名乳腺癌专家，他投入了所有的时间和精力来研究乳腺癌。A. specialist专家；专科医生；B. physician内科医生；C. physicist物理学家；D. surgeon外科医生。根据空前定语“breast cancer(乳腺癌)”可知，他是一位这方面的专家。故选A项。