Notes on the Exercises

From: The Art of Computer Programming

It is difficult, if not possible, for anyone to learn a subject purely by reading about it, without applying the information to specific problems and thereby forcing himself to think about what has been read. Furthermore, we all learn best the things that we have discover for ourselves. Therefore the exercise form a major part of this work; a definite attempt has been made to keep them as informative as possible and to select problems that are enjoyable to solve.

-Knuth

Q and A

Q and A
孙燕姿有首歌的歌词是这样的;
  
Sometimes Love Just Ain't Enough 


I don't wanna lose you,
but I don't wanna use you
just to have somebody by my side.
And I don't wanna hate you,
I don't wanna take you,
but I don't wanna be the one to cry.
And that don't really matter 
to anyone anymore.
But like a fool I keep losing my place
and I keep seeing you walk through that door.

But there's a danger in loving somebody too much, 
and it's sad when you know
it's your heart you can't trust.There's a reason why people 
don't stay where they are.
Baby, sometimes, love just ain't enough. 

Now, I could never change you,
I don't wanna blame you.
Baby, you don't have to take the fall.
Yes, I may have hurt you, 
but I did not desert you.
Maybe I just wanna have it all.

It makes a sound like thunder, 
it makes me feel like rain.
And like a fool who will never see the truth,
I keep thinking something's gonna change.
And there's no way home,
when it's late at night and you're all alone.
Are there things that you wanted to say? 
do you feel me beside you in your bed,
there beside you, where I used to lay?

And there's a danger in loving somebody too much,
and it's sad when you know it's your heart they can't touch.
There's a reason why people don't stay who they are. 
Baby, sometimes, love just ain't enough.
Baby, sometimes, love...
it just ain't enough.
Oh...

我画红线的地方应该怎么解释？


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爱一个人如果爱得太深是很危险的，当你知道你的心已经不能再相信的时候，你会 很伤心。应该就是这意思吧.

以前这首歌听过很多遍，可这次仔细看了歌词才找到了很深的感觉，我贴到了我的 Space上

谢谢

andrei27ct@hotmail.com

Caiteng

日本女孩

　夕阳西照。我踩着脚踏车匆忙往家赶。前心贴后心了，糊弄一下自己还要去旁边的小店打工的。刚刚转过街角，一声清脆的“哎呦”，好像还有什么东西从我身旁掉落。我捏住脚踏车，回过头来。 

　　身后所站的，是我所见过最美丽的日本女孩。一身和服，许是要去谁家聚会？大概被我转弯时吓到，虽有些花容失色，但仍是明艳不可方物。原本应该拿在手中的小包袱掉在身边，却似给这幅绝美的画卷加了个脚注。　　 

　　我本不喜欢日本的女孩子，不知为什么，却猛然觉得她似乎出现在过我今生的梦里，敲打过我三生三世的心钟。我呆呆凝望着她的剪水双眸，说不出一个字，任凭时光在我俩中间悄悄流逝，一点一滴。　　 

　　她从惊吓中平复过来，看着我呆呆的样子，“扑”的笑了，连忙用一双小手捂住了嘴，头微微的低下，但我仍能看到她脸上的晕红。 

　　我慌忙跳下车，走过去拾起包袱。拿到手里便知道，里面是一本书。是否是一本小说？一本关于浪漫爱情的小说？是否她正在读？哪个少女不思春，哪个少年不钟情。我本不信这样的故事，然而我现在在盼望着它的发生？　　 

　　抬起头，正看到少女羞涩的双眼。羞涩归羞涩，她丝毫没有避开我的目光，眼里满是暖意。我真的觉得，我在青灯下苦修了五百年。她放下双手，静静对着我。我俩什么都没有说，却仿佛在交流着千言万语。我醉了。我愿长醉不愿醒。　　 

　　然而我终究醒来。“给你，抱歉。”我从不会说些什么，我更不知道在女孩子面前应该如何表达。我只能轻轻掸去包袱上的浮土，轻轻递给女孩。女孩没有接，如星般闪烁的大眼睛望着我，嘴角悄悄扬起。如此的女孩本应像个公主，但我只感觉我们是失散了多少年的朋友，甚至，是几生几世？ 

　　此时此景，伊人在前，芳香似兰。　　 

　　我的心催促着我做些什么、说些什么，我的大脑却指挥着我将包袱向前一递。女孩迟疑的抬起手来，我将包袱塞在她的手里，转身就走。我清晰的看到转身前她眼里黯淡的光和她欲呼的小口。我的指尖和她的指尖一碰而过。那一瞬间如触电的感觉击穿了我虚伪的外表，我庆幸我已经转过身来。忍住痛，我踏上了脚踏车。　　 

　　身后有两道目光灼烧在我的后背上，我越来越用力，终于渐行渐远。回头时，一个身影依旧若隐若现。　　 

　　往自己驿动的心上狠狠一拳，打工去。我只是个穷留学生，我只是个送奶工，我只能拥有这一瞬间的风情。




---------------转载

数学证明及其优美性

Q and A

Q and A

老师:

你好，有这么一个句子Tony Blair has won a third term of office, albeit with a much-reduced majority. But how will he handle the big challenges ahead? And how soon will he pass them on to his expected successor, Gordon Brown? 
最后一句的his expected successor 是否可能存在歧义？

原文见http://www.economist.com/agenda/displayStory.cfm?story_id=3933079。

谢谢。

X

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X同学, 你好!

   看了你提的问题之后, 我又阅读了英国大选的相关文章。根据我所了解的情况, 回答如下：工党内的财政大臣Gordon Brown在经济领域成绩突出, 而且对首相之职虎视眈眈。布莱尔与布朗之间的摩擦早已是公开的秘密。据说，布莱尔本人又贵体有恙，因此，在英国,有一种声音, 即, Blair干不满任期就会提前下台。而Gordon Brown则是舆论看好的Blair的继承人，即Gordon Brown可望成为Blair的继任人。也就是你文中据说的his expected successor.

robertfeng robertfeng@sina.com