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28、(15分)【历史上重大改革回眸】阅读材料，回答问题。 材料  元武宗在位期间(1307~1311)，对经济制度进行了一系列改革，史称至大“惟新”。自大德六年以来物价急剧上涨，至元钞贬值发展到很难收拾的地步。武宗决心专任尚书省整顿财用，至大二年九月，诏行“至大银钞”，以新币一两兑换至元钞五贯、白银一两、赤金一钱。至大二年，把海运粮数量再次大幅度提高，使京畿地区粮食供应的明显增加，使政府能够通过控制粮价保持市面的基本稳定短文改错下面是一段文章，请你对其进行修改。文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。增加：在缺词处加一个漏词符号(∧)．并在此符号下面写出该加的词。删除：把多余的词用斜线(＼)划掉。修改：在错的词下划一横线，并在该词下面写出修改后的词。注意：1．每处错误及其修改均仅限一词：2．只允许修改10处，多者(从第11处起)不计分。Mr．Liu Jin, aging 39, is working in a factory in Shanghai as an chemical engineer．After he graduated from Nanjing University in 1978, he sent to Tokyo University to study the chemical engineering．Through her hard work for 4 years, he achieved remarkably results in scientific research．But he received a doctor's degree in 1982．A Japanese company manager tried hard to invite him to work and promise to give him a good salary but he didn't receive it．In 1983, he returned to China without a moment's hesitations．He has made up of his mind to devote all his life to our country．