Small children often laugh at the short ones or at someone who isn't dressed as well as they are. But as
they grow up, they learn not to hurt other people's feelings by laughing at their problems. They learn to laugh
at other things. Most important, they learn to laugh at themselves. 　　
    Suppose you're playing a game. You make a mistake and lose. Do you become angry? Or can you laugh
at yourself and hope to do better next time? Suppose you are at a special dinner. You at times spill some food.
Why keep worrying about how clumsy you looked? Why not laugh it off and enjoy yourself any way? If you
can, it's a good thing you've really grown up.

1. This article is mostly about ______.

A. why laughter is good for your body 　　
B. what you should laugh at 　　
C. where you may laugh  　　
D. where you may laugh at

2. The writer says small children laugh at people who ______.

3. The writer shows hot laughter could help you ______.

A. not to spill food 　　　　　　
B. not to be worried 　　
C. not to enjoy yourself　　　　　
D. to grow up

4. The most important thing is to learn how to laugh at ______.

A. jokes　 　　
B. pictures　 　　
C. children　 　　
D. yourself

A. make a mistake　　　
B. lose again　
C. become angry　　　　　
D. try again

A. do　　　　　
B. to do　　　　　　
C. doing　　　　
D. with do