单选题 By advocating moderate change, they think that they can keep consumer costs low.
A. reasonable B. radical C. immediate D. minimum

【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”。