not/and/or
9 > 8 → Ture
( not > and > or ，and ：前假取前，否则取后 。 or ：前真取前 ，否则取后 。)
2 . not 2 > 1 and 3 < 4 or 4 > 5 and 2 > 1 and 9 > 8 or 7 < 6
7 > 6 → Flase (not 必须一直带着，直到被消除)
3 . 8 or 3 and 4 or 2 and 0 or 9 and 7
→ 8
4 . 0 or 2 and 3 and 4 or 6 and 0 or 3
→ 4
5 . 下列结果是什么？
6 or 2 > 1 6 3 or 2 > 1 → 3
0 or 5 < 4 5 < 4 5 < 4 or 3 → 3
2 > 1 or 6 2 > 1 3 and 2 > 1 → 2 > 1
0 and 3 > 1 0 2 > 1 and 3 3
3 > 1 and 0 0 3 > 1 and 2 or 2 < 3 and 3 and 4 or 3 > 2 2
