单选题
Opponents of legalization often argue that inside the breast of all doctors, both sides of the argument agree, beats the heart of a Mengele ______. A. for whom patients must be protected B. against whom patients must be protected C. against whom patients must protect themselves D. for whom patients must be being protected
【正确答案】
B
【答案解析】[解析] 本题的主语是“Opponents of legalization”，据此可以推知宾语从句中的“Mengele门格勒”是位反面人物。空格处的protect…against意为“保护……免遭……的损害或侵犯”，谓语应用被动语态形式，因此B项正确。