〔1〕中国机械工程学会.密相气力输送技术〔R〕.北京:1996
Leaders, Members:
My name is Liyuanyuan. Im a boy and I am 12 yeas old, there are 4 people in my family. My father is a Chemistry teacher. He teaches chemistry in Zhengxin senior high school.
My mother is a Chinese teacher. She teaches Chinese in the university. I have an elder brother; he is a junior middle school student and is preparing for the entrance exam.
Im tall and I have a pair of big eyes. Now, I am in Grade 5, my study is not very good, but I like English, so my English is better than others.
I like singing, drawing, playing basketball. I like to read English story books in my free time. Sometimes I surf the Internet and download the English study materials. Because it also enlarges my vocabulary words. I think one day I can master English. Thank you.
Dear David,
Im glad youll come to Beijing to learn Chinese。 Chinese is very useful, and many foreigners are learning it now。 Its difficult for you because its quite different from English。 You have to remember as many Chinese words as possible。 Its also important to do some reading and writing。 You can watch TV and listen to the radio to practise your listening。 Do your best to talk with people in Chinese。 You can learn Chinese not only from books but also from people around you。 If you have any questions, please ask me。 Im sure youll learn Chinese well。
Hope to see you soon in Beijing。
Yours,
Wang Ming
〔1〕蒋挺大.亮聚糖〔M〕.北京:化学工业出版社,2001.127
〔2〕Kortun G. Reflectance Spectroscopy〔M〕. New York: Spring-Verlag,1969
〔1〕周庆荣,张泽廷,朱美文,等.固体溶质在含夹带剂超临界流体中的溶解度〔J〕.化工学报,1995(3:317—323
〔2〕Dobbs J M, Wong J M. Modification of supercritical fluid phasebehavior using polor coselvent〔J〕. Ind Eng Chem Res, 1987,26:56
〔3〕刘仲能,金文清.合成医药中间体4-甲基咪唑的研究〔J〕.精细化工,2002(2:103-105
〔4〕 Mesquita A C, Mori M N, Vieira J M, et al . Vinyl acetate polymerization by ionizing radiation〔J〕.Radiation Physics and Chemistry,2002, 63:465
It is mainly said in the passage that a boy and his father went fishing in a river.The boy caught a big fish al
ong the forbidden time .Therefore,his father forced him to put it back. If his father compromised with the boy on keeping the fish,the boy would develop a bad habit of ignoring social rules. As is known to all, to protect our safety,school states that no child shall be permitted leaving the school without accompanying by their parents during the daily study.However,still some students would rather look down upon the school rules,which leads to the school gate in a mess. As far as i am concerned,it is of great significance to observe the regulations rather than to break it for personal benefits.In a word,we should attach importance to obeying the rules.Only by following the social roles can we possess virtue,which has good impacts on society.
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