课文阅读A famous monastery 著名的修道院 monatery n. a building in which MONKS live together 隐修院；修道院；寺院 The Great St. Bernard Pas

课文阅读Mutilated Ladies 残钞鉴别组 mutilate v. to damage sb’s body very severely, especially by cutting or tearing off part of

课文阅读Smash-and-grab 砸橱窗抢劫 smash v. to break sth, or to be broken, violently and noisily into many pieces （哗啦一声）打碎，打破，破碎

课文阅读The facts 确切数字 Editors of newspapers and magazines often go to extremes to provide their readers with unimportant fa

课文阅读The double life of Alfred Bloggs 艾尔弗雷德·布洛格斯的双重生活 double adj. combining two things or qualities 双重的 [usually before

课文阅读An unknown goddess 无名女神 goddess n. a female god 女神 Some time ago, an interesting discovery was made by archaeologi

课文阅读Finding fossil man 发现化石人 fossil man 化石人 We can read of things that happened 5000 years ago in the Near East, where

课文阅读Thirteen equals one 十三等于一 Our vicar is always raising money for one cause or another, but he has never managed to ge

课文阅读A puma at large 逃遁的美洲狮 puma n. a large American wild animal of the cat family, with yellow-brown or grey fur 美洲狮 at

一定会按下 $n$ 次键来打出 $n$ 个字符，所以减少操作步数的唯一路径是减少移动的步数，也就是让 0 和 1 尽量地连续。 注意到，只进行 $1$ 次反转操作最多只可能让移动的步数减少 $2$。故而，若整个序列 0 和 1 已经足够连续