Do you like exercising in the sun？ How much sunlight do you get every day？ How much time do you spend in the（1） ？ As we all know ， enough sunlight is good for our health． It gives us strong bones （骨骼） and good eyesight． It makes us happy and sleep better． Now scientists find out that it can even make you（2） ．
Scientists did tests on mice． They give mice lots of sunlight． After that， the mice （3） _____ a special thing named glutamic acid（谷氨酸） in their bodies． Glutamic acid does many things for our body．It can improve some of our abilities such as learning and remembering things．
It is OK to enjoy some sunlight for about an hour every day． But you should be （4） ____because it is summer now．The sun is very strong around noon．Keep yourself away from the sun around the noon，or it may （5） your skin（皮肤）． It is best to enjoy sunlight in the morning or before sunset．
Why not go out and enjoy the （6） with your family or your best friends？ I'm sure you can be smarter soon．
（1）A． moon |
B． sun |
C． night |
（2）A． smarter |
B． taller |
C． thinner |
（3）A． invent |
B． find |
C． produce |
（4）A． careful |
B． serious |
C． clever |
（5）A． shine |
B． burn |
C． dry |
（6）A． time |
B． air |
C． sunlight |
We all know that the Yellow River is one of the （long）rivers in China．
It takes me half an hour （do） my homework every day．
Qiannan is in the （south）part of Guizhou province．
I am used to （drink）a glass of water after getting up every morning．
A boy lost his left arm in an accident，but he didn't give up his（76） ．When he was eleven years old．he （77） （decide） to study judo（柔道）from an old great judo coach．The boy was doing well，but after three （78） （month） training，he found that the coach had told him only one action．"Sir，"the boy（79） （final） said．"shouldn't I learn more actions？"This is the only move you know，but this is the only action you'll need to know．"the coach replied．Not quiet understanding，but believing in his coach，the boy kept （80） （practice）．
Several weeks （81） （之后），the coach took the boy to a competition．Surprising himself．the boy easily won his （82） （one） two matches and came to the finals．This lime，his opponent was bigger，（83） （strong） and more experienced．For a while，the boy appeared to be defeated．but soon his opponent made a big mistake，he lost his guard．Immediately，the boy used his move to defeat his opponent and won the match and （he competition．He was the （84） （冠军）
On the way home，the coach （85） （tell） the boy that he taught him only the action was to let his greatest weakness become his greatest strength．