单选题 Customers often defer payment as long as possible.
A. make B. demand
C. obtain D. postpone

【正确答案】 D
【答案解析】[解析] 本题考查的是对动词的认知能力。本句的意思是:顾客尽可能的拖延付款。defer延期,缓召。A.make做;B.demand要求;C.obtain得到;D.postpone推迟,延期。如The commander decided to postpone the big push until the spring.指挥官决定把大规模的进攻推迟到春天进行。