[解析]
(1)C 细节题.由第二段第一句"Shoppers seldom complain to the manager or owner of retail(零售) store,but instead will alarm their friends,relatives,co﹣workers,strangers and anyone who will listen."可知,零售商往往是最后一个听到顾客抱怨的人是因为顾客倾向于向自己的朋友、亲属、同事等人抱怨不愉快的购物经历,故正确答案为C.
(2)A 细节题.由第五段第一句"During peak shopping hours,some retailers solved the parking problems by getting moonlighting local police to work as parking attendants."可知正确答案为A.
(3)B 细节题.由倒数第三段最后一句"Most importantly,salespeople should be diplomatic and polite with angry customers."可知老练有礼的销售人员对解决顾客的问题最重要,故正确答案为B.
(4)A 细节题.由文章最后一段"Customers can also improve future shopping experiences by filing complaints to the retailer,instead of complaining to the rest of the world."可知作者建议顾客们直接把抱怨告诉商家,故正确答案为A.