问题描述：
用序数词表现以下数字：1st____ 2nd____ 3rd___ 4th___ 5th___ 6th__ 7th___ 8th___
用序数词表现以下数字：
1st____
2nd____
3rd___
4th___
5th___
6th__
7th___
8th___
9th___
10th
11th___
12th___
用序数词表现以下数字：
1st____
2nd____
3rd___
4th___
5th___
6th__
7th___
8th___
9th___
10th
11th___
12th___
问题解答：
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