David’s got a text message from his friend Sam．Can you understand it?

　　7,15　　20,15　　20,8,5　　16,1,18,11

　　This message was in code(密码，代码)．How many letters are there in the English alphabet?Twenty-six．So can you read it now?

　　David decided to use a different code in his answer to Sam．This time, he was putting A instead of B, B instead of C, and so on．His message to Sam shown on the right was very short．Can you understand?

　　Sam guessed David’s code, and he replied：ZESDQ RBGNNK．When David’s little sister saw the message, she felt puzzled．She couldn’t read it at all．But David was very happy that his sister couldn’t read his message!

　　Lots of people use codes to send secret messages．In a war, secrets are very important so soldiers often send each other messages in code．Nowadays, we can use computers to make and break difficult codes．Even before computers, people invented other machines to do this．

　　Here’s a famous machine that Germans used in the Second World War(1941－1945)．It’s called the Enigma Machine．The machines were very big, heavy and expensive．Every day they changed the codes automatically, and this made it almost impossible for anyone to break the codes．The person sending a message had one machine, and the person receiving the message had another．

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　　In front of my daughter Sindu, was a bowl filled with cabbage．She hated cabbage．She only sat there in silence with tears 　　1　　 her eyes．

　　“Sindu, darling, why don't you 　　2　　 a little?Your mom will shout at me．”

　　Sindu wiped(擦)her 　　3　　 with the back of her hand．

　　“OK, Dad．I'll eat, just a little．”Then Sindu said,“Dad, if I eat it all, will you give me 　　4　　 I want?”

　　“Yes, within reason．”

　　　　5　　 she began to eat．It took her almost half an hour to finish the 　　6　　 Then she came up to me and said,“Dad, I want to have my head shaved(刮、剃)!”

　　“Sindu, why don't you 　　7　　 something else?If we see you with a clean-shaven head, we will be 　　8　　,”I said．

　　“But, Dad, you promised!Now, you are going back on your words．”

　　I had to 　　9　　 my promise．Sindu had all her hair cut off．She looked beautiful．

　　On Monday morning, I took her to school．　　10　　 when we arrived, a boy got out of a car, and shouted,“Sindu, please wait for me!”

　　Guess what?The boy had 　　11　　 hair either．

　　“Sir, your daughter is 　　12　　!”a man got out of the car and said．“That boy is my son, Harish．He has cancer．He lost his hair 　　13　　 he got ill．Sindu cut hers off so Harish felt less 　　14　　 She's a special girl．”

　　I stood for a while,“My little girl, you 　　15　　 me how selfless(无私的)real love is!”

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