问几个寒假作业中的题目，请各位相助！
第一题：在一寿联中隐藏着有趣的数学问题，上联是“花甲重开，又加三七岁月”；下联是“古稀双庆，更多一度春秋”。你可否通过这幅对联猜一猜，这位老寿星今年是（ ）岁。
第二题：用一批完全相同的正多边形木板铺地面，要求顶点聚在一起，且木板之间没有缝隙，下列木板不符合要求的是（ ）
A、正三角形木板 B、正方形木板
C、正五边形木板 D、正六边形木板
第三题：猜英语谜语
1、What is smaller than an insect's mouth?
2、What season is the most dangerous one?
3、What's too much for me, just right for two,but nothing at all for three?
4、On what day of a year do soldiers start wars in history?
5、How many feet are there in a yard?
6、Who tries to make others smile most of the time?
7、From what number can one take half and leave nothing?
8、What has hands but no feet, a face but no eyes, and tells but does not talk?
9、How many months have 28 days?
10、Which horses have six legs?
请各位帮帮忙吧！如果有全答对者，我会提高悬赏分的，一定会的！
那就先谢谢啦！！！
参考答案:一题：71
二题：C
三题：1.FOOD
2.
3.耳机
4.
5.ONE
6.相声演员
7.EIGHT（8）
8.clock
9.12
10.