单选题
It is ______ with the customer not to let the shop assistants guess what he really likes and wants until the last moment.
【正确答案】
D
【答案解析】[解析] 考查短语辨析。an honor意为“光荣的人或事”；on his honor意为“以名誉担保”；in his honor意为“为某人的荣誉”：a point of honor意为“涉及名誉的事情”。句意为“对于顾客来说，直到最后时刻才让售货员猜出他真正喜欢什么，真正想买什么，这是一个涉及面子的问题”。故选D。