问题补充:
We are organizing a lot of activities to celebrate the birthday of the Communist Party of China these months.
A. nineteen
B. ninety
C. nineteenth
D. ninetieth
答案:
A. nineteen
B. ninety
C. nineteenth
(答案→)D. ninetieth
解析:考查点:数词。解题思路:此题通过序数词的考查让学生了解中国一件大事:即纪念中国共产党诞生90周年。根据定冠词the和语境可以知道本题考查序数词。