境外游客购买贵重物品特别是文物时，全陪要提醒其保管好（）以备出关时备验，游客购买中成药、中药材时，要向其讲清（）的有关规定。
参考答案：发票；中国海关
When her father was fourteen, he started _______ a football team. [ ]
A. to play with
B. to play for
C. playing with
D. playing as
下述哪种肝硬化引起肝性脑病最多见（）
A.原发性胆汁性肝硬化
B.酒精性肝硬化
C.淤血性肝硬化
D.肝炎后肝硬化
E.血吸虫病性肝硬化
