单选题 Most nurses are women, but in the higher ranks of the medical profession women are a ______.
【正确答案】 B
【答案解析】[分析] 词义辨析。 A.scarcity 缺乏,不足,罕见;B.minority 少数,少数民族;C.minimum 最小值;D.shortage 不足,缺乏:因此选项B为答案。