|
- UID
- 222303
- 帖子
- 400
- 主题
- 8
- 注册时间
- 2011-7-2
- 最后登录
- 2015-11-28
|
| This is becoming a popular topic. I used a pen because I don't write very hard and pencil is much more impermanent. It was a holy mess at times but I always circle my final answer amid the wreckage a pen will do on a reworked quantitative problem or essay! |
|
发表于 2011-7-13 16:40
|