根據(jù)短文內(nèi)容，在后面空格處填入一個(gè)正確的單詞(含縮寫(xiě)詞)。

　　I have had thousands of classes since I started school nine years ago．But only one class was the most important．

　　It happened last term just after I had got a 　　1　　 grade in an exam．I was sad, but I didn’t want to give up．So I decided to go to a class which could tell me how to be successful．

　　The speaker walked into the room．She didn’t begin talking like a teacher．　　2　　, she held up a 20 yuan note!

　　“Who wants this?” She asked．There was no wonder that everyone in the class put up their 　　3　　．

　　The teacher smiled．Then she stuck(貼)the note on the blackboard and asked the 　　4　　 question．Again, we all put up our hands．The teacher smiled again, but didn’t say 　　5　�。�Suddenly, she threw the note onto the floor! Then she asked the question a third time．

　　I didn’t understand 　　6　　 she was doing．Why was she asking the same question again and again? I didn’t know what to do．But I wanted the note, so I put my hand 　　7　　 once again．Suddenly, the teacher started to laugh．Then she picked up the note．“You have all just told me how to become successful,” she said．

　　“The note is worth(值)20 yuan．It is still worth 20 yuan, even though I throw it on the floor．You are just 　　8　　 the note．No matter what happens to you, you still have your worth(價(jià)值)．If you realize that, and believe in 　　9　　, you will be successful!”

　　When I 　　10　　 those words, I was deeply moved．Suddenly, I realized I was worth a lot．I may have done badly in an exam, but it doesn’t mean I can’t do it well in the future．