软件开发模型大体上可以分为三种类型。第一种是以软件需求完全确定为前提的 (21) ；

根据短文内容，完成表格，每空一词。
What is your favourite cartoon? It may be difficult for you to decide. But for pianist Lang Lang, Tom and Jerry is the best one.
When Lang Lang was two years old, he saw Tom playing the piano. This was his first time to enjoy western music and this experience encouraged him to learn to play the piano.
His talent at the keyboard has taken him from Shenyang to the world.
Lang became a good piano student at three. Ever since, the boy has been doing better and better. In 1997, the 15-year-old boy studied at a famous American music college.
Lang’s performance are full of energy. He is well-known for making facial expressions and moving around while playing the piano.
The road to success has never been easy. Lang’s father stopped his job to look after him, while his mother stayed in Shenyang to make money. But Lang considers himself lucky and believes he should give something back. He has helped the children in poor areas a lot.

Personal ____小题1:______ Card
About his personal life	Name	Lang Lang
	Year of birth	_____小题2:_____
	_____小题3:_____	Keyboard
	Favourite ____小题4:______	Tom and Jerry
	The reason for ____小题5:____ poor children	He believes himself lucky and should give something back.
About his musical life	The ___小题6:_______ for western music in his childhood encouraged him to learn piano ____小题7:_____ .With the help of his parents and teachers , he was able to ____小题8:___ at a famous American music college, where his success began.
	Famous for his ____小题9:______ performances and ____小题10:______ facial expressions and moving around while playing the piano.