在面向对象方法中，______描述的是具有相似属性与操作的一组对象。

     On a cold winter day,I waited in line to see my hero,Jack Canfield,the author of The Success
Principles
     During his talk,Jack__1__his wallet,pulled out a hundreddollar bill,and said,"Who wants this?"
__2__shot up in the audience；people leaned forward to see whom Jack would__3__.But I
jumped up,ran up the__4__to the stage,and grabbed the bill.As I was launching myself in the
air,thoughts__5__through my mind-was I about to be humiliated (羞辱) in front of 800 people?
Would they__6__security guards and take me from the stage?__7__my desire for bold action
was louder than any__8__voice.
     As I got the bill from his hand,he said,"That's it!We can't wait for the__9__to come to us.
We must take action to__10__what we want!"
     After his talk,I managed to formally meet Jack and boldly asked for his__11__email
address.Over the next months,I sent him emails__12__my vision and dreams with him.He
kindly emailed back lots of encouragement.But my life got__13__with other things.I stopped
emailing Jack.
     A year later,my dreams had worn away.I thought Jack would inspire me into action,like
a giant__14__that would show me the way.
     I emailed him,and then again-but got no__15__.As I sat down at my computer to check
my emails,I__16__woke up.What was I doing?I was waiting!Now I remembered the crowd,
most likely__17__that hundreddollar bill,while they sat__18__to their chairs.
     Usually we all have a "Jack"for whom we wait-whether it's a person,a place or a thing.
We__19__believe the gifts of life are just around the corner,and that everything will come
in a(n)__20__way.So we don't try.We give up.But as Wayne Gretzky said:"You'll always
miss 100% of the opportunities you don't take!" So I stopped waiting and started my
writing career.
     Now what are you waiting for?