题目内容
信息技术就是指计算机技术。
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第二代计算机的主要元件是电子管。
美玉不易得。一块不成形状的石头经过锯割，打磨，雕刻，才能现其光滑。8000年来，玉始终伴随着中国人的生活。It is difficult to ____ beautiful jade. Only through the delicate procedure of cutting, ____ and carving a piece of unshaped stone can ____. Yu has _____ in people’s lives in China for the last 8,000 years
历代皇帝的印章要用玉制成。玉还是随身携带的护身符，是饰品，更是价值不菲的艺术品。____ were made of yu. Yu is also a popular material for amulets, and ____.
而北京奥运会奖杯则创造性地将玉镶嵌其中。玉象征高贵、圣洁、美好。中国人认为相较于黄金，玉石的价值是不可估量的。Yu was featured in the medals of Beijing Olympic Games. Yu ____, holiness and purity. Chinese believe that yu is ____ than gold.
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