单选题 In Britain today women ______ 44% of the work force, and nearly half of the mothers with children are in paid work.
【正确答案】 B
【答案解析】短语辨析。make up… of 占…比例(重)，…组(构)成; build up增进, 使增大; stand for 代表，象征； conform to 符合。因此选B。