Question

这道题怎么做？

Denis was a thief.He wrote a letter to another thief Pat.But the police got the letter.It reads:BNLD ZS LHCMHFGS ZMC GZUD SGD SGHQSX ONTMCR VHSG XNT. What's it about?How can you read it?The policemen were quick.They studied the letter carefully and soon found out what they want.Now let's suppose you were a policeman, can you read Denis' letter?Maybe you need some help:When Denis wanted a letter,he wrote down the letter before it in the alphabet.Now can you read Denis' letter?What must Pat do？When?And what did Denis want?

Answer 1

Come at midnight and have the thirty pounds with you.

这就是那个信息。。。

其他的照题回答就好了。。。

基本上，解密用的是每个字母在单词表中的后面那个字母就可以了。。因为加密的时候使用单词表中的前一个字母代替。。。

Answer 2

come at midnight and have the thirty pounds with you.
Denis 写信时用了他想写的字母的前一个（字母表中的）来代替这个字母，全都还原过来就是上面的文字。
Denis 让Pat 在半夜的时候带着三十磅来找他。

Answer 3

冷静！