I’m years old and it’s my birthday today.A. fifteen fifteenB. fifteen fifteenthC. fift

问题补充：

I’m years old and it’s my birthday today.

A. fifteen, fifteen

B. fifteen, fifteenth

C. fifteenth, fifteen

D. fifteenth, fifteenth

答案：

A. fifteen, fifteen

(答案→)B. fifteen, fifteenth

C. fifteenth, fifteen

D. fifteenth, fifteenth

解析：考查数词。Fifteen基数词，十五； fifteenth序数词，第十五。表示岁数的时候，用基数词，而在描述人第几个生日的时候，用序数词，故选B，我今年十五岁，这是我第十五个生日。