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简述金属表面化学处理的定义及方法

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I am Li Ping. I graduate from senior high school and major in 1. I started learning English since I was 12 years old. My parents 2 a lot of American friends. That’s why I have no problem communicating 3 Americans or others by 4 English.In my spare time, I like to do5 relating to English such as listening to English songs, 6English movies or TV programs, or even attending the activities held 7some English clubs or institutes. I 8 to go abroad for a short- term English study. During that time, I 9a lot of daily life English and saw a lot of different things.I think language is very 10. I could express one substance by using different sounds. So I wish I could study and read more English literaturesand enlarge my knowledge.

One day, Nick invited his friends to supper. He was cooking some delicious food in the kitchen. Suddenly, he1that he has run out of salt. So Nick called to his son, “Go to the village and buy some salt, but pay a fair price for it: neither too much 2too little.”His son looked surprised. “I can understand why I shouldn’t pay too much, Father, but if I can pay less,3not save a bit of money?”“That would be a very 4thing to do in a big city, but it could destroy（毁坏） a small village like ours,” Nick said.Nick’s guests,5had heard their conversation, asked why they should not buy salt more cheaply if they could. Nick replied, “The only reason a man would sell salt 6a lower price would be because he was desperate(不顾一切的） for money. And anyone who took advantage of （利用）that situation would be showing a lack of respect 7the sweat and struggle（努力，奋斗） of the man who worked very hard to produce it.”“But such a small thing couldn’t 8destroy a village.”“In the beginning, there was only 9very small amount of unfairness(不公平） in the world, but everyone added a little, always10that it was only small and not very important, and look where we have ended up today.”

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