|
- UID
- 223256
- 帖子
- 209
- 主题
- 93
- 注册时间
- 2011-7-11
- 最后登录
- 2016-4-18
|
Do the question 5 times and you will see how simple it is....you just memorize the denominator and you have both.
Lots of time left...these little things might help you get over the hump if your close. |
|
发表于 2011-7-11 18:27
|