题目：
计算：-f它| 1 |
| 7 |
| 1 |
| 7 |
答案
解：原式=(-28-| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 如 |
| 1 |
| 7 |
| 1 |
| 7 |
=-4-
| 1 |
| 4十 |
| 如 |
| 4十 |
=-4-
| 7 |
| 4十 |
=-4
| 1 |
| 7 |
解：原式=(-28-
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 如 |
| 1 |
| 7 |
| 1 |
| 7 |
=-4-
| 1 |
| 4十 |
| 如 |
| 4十 |
=-4-
| 7 |
| 4十 |
=-4
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 如 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 4十 |
| 如 |
| 4十 |
| 7 |
| 4十 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 如 |
| 1 |
| 7 |
| 1 |
| 7 |
| 1 |
| 4十 |
| 如 |
| 4十 |
| 7 |
| 4十 |
| 1 |
| 7 |
（2009·枣庄）如图，骰子是一个质量均匀的小正方体，它的六个面上分别刻有1～6个点．小明仔细观察骰子，发现任意相对两面的点数和都相等．这枚骰子向上的一面的点数是5，它的对面的点数是（ ）