I remember the first time that I was extremely happy.I was about 8 years old when for the first time，there was a computer in the classroom.I remember that my teacher allowed each student to take turns to play various educational games on the computer.One day，I found the source code (编码) for one of these games.Without knowing or being taught any programming language，I was able to figure out some of the BASIC code.I just gave myself an infinite number of lives in the game，so I could continue playing it forever.This was also my first introduction to algebra，and I didn't even know it at the time.This was a decisive moment in my life.I was quite excited because of what I was learning and what I was able to do.As a result，I was enthusiastic for the rest of my life about selflearning and computers，and I was quite happy doing them too.
I've noticed that people who are truly content with life are enthusiastic about what they do.This enthusiasm，along with good health，is the key to being happy.It also leads to selfconfidence and content in life too.It may also lead to success，wealth，and achievements.
Success，wealth，or achievements can also bring some people happiness，yet I know plenty of rich people who are unhappy.I know many people with successful businesses that are not happy with what they are doing.I know people who continuously buy themselves new toys，such as cars，computers，and televisions，yet never seem content for too long.Please remember，happiness is the journey of life，not the destination.
1．What can we know from Paragraph 1?
A．The author has a great talent for algebra.
B．Creative thinking is necessary for every child.
C．The BASIC code of the computer is not difficult.
D．The author's experience in his childhood changed his life.
2．The underlined word “infinite” means ．
A．big B．limitless
C．normal D．small
3．The author wants to tell us through his experience in the school that ．
A．interest is the best teacher
B．children are the hope of the future
C．young people are fearless
D．where there's a will，there's a way
4．We can infer from the last paragraph that ．
A．people who are rich and successful in career generally feel unhappy
B．wealth can't bring people any happiness and comfort
C．one will feel unhappy once he has gained all the things that he wants
D．being enthusiastic about what you do is more important than wealth
