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国际化学奥林匹克起源于东欧国家。1968年第一届国际化学奥林匹克在捷克斯洛伐克首都布拉格举行。参赛国为捷克、匈牙利和波兰三国。其后除1971年外,每年举行一次,参赛国逐届增加,情况如表:从第1—11届参赛国除瑞典、西德和奥地利外,都是东欧国家和苏联。1980年第12届起,西欧国家逐渐增加。参赛的非欧洲国家目前有美国、加拿大、科威特、古巴、突尼斯和中国等。英国、美国分别从15、16届参加了竞赛,我国参加了第19届竞赛。
International Chemistry Olympic originated in Eastern European countries. 1968 First International Olympic in Prague, capital of Czechoslovakia. The participating countries are the Czech Republic, Hungary and Poland. Thereafter except 1971, held once a year, participating countries increased by successive sessions, as shown in the table: From the 1st to 11th participating countries, except Sweden, West Germany and Austria, are the Eastern European countries and the Soviet Union. Since the twelfth in 1980, Western European countries have gradually increased. The participating non-European countries currently have the United States, Canada, Kuwait, Cuba, Tunisia and China. Britain and the United States took part in the competition from the 15th and 16th sessions respectively, and our country participated in the 19th competition.