—We’ll be back for our school’s anniversary ceremony(周年校庆).
—I see. That means you’ll have a get-together with your classmates in years.
A. fifteen; seven
B. fifteenth; seven
C. fifteen; seventh
D. fifteenth; seventh
网友回答
A. fifteen; seven
(答案→)B. fifteenth; seven
C. fifteen; seventh
D. fifteenth; seventh
解析：考查数词的用法。“我们将回来参加学校的15周年庆。”“知道了。那就意味着你就可以和你七年未见的同学聚会了。”第十五个庆典，用序数词fifteenth；in常加一段时间，“七年”用基数词seven。故选B。