单选题 By advocating moderate change, they think that they can keep consumer costs low.
【正确答案】 A
【答案解析】[解析] A项的意思是“合理的,适中的”与“moderate”“适中的,适度的”意思相吻合。B项“激烈地,猛烈地”;C项“立刻,马上地”;D项“最少量”。都与题干中的词义不符。