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- UID
- 217814
- 帖子
- 252
- 主题
- 125
- 注册时间
- 2011-5-24
- 最后登录
- 2012-9-12
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| why are you getting them wrong? cuz you don't know how to do them? Most problems shouldn't look completely foreign, but maybe you forget how to do a little this or that....I don't see how it's much different from level 1, more problems, see more situations, eventually nail them down.... |
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发表于 2011-7-11 19:20
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