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导语：以下英语网为大家整理了全面的职称英语考试历年真题及答案解析，《职称英语考试试题汇总：历年真题及答案解析》供大家参考学习。更多职称英语考试试题敬请关注英语网！ 【推荐】关注英语网微信：yingyuwang2013，更快获取真题答案及成绩查询信息。 第6部分：完形填空（第51～55题，每题1分，共15分） 下面的短文有15处空白，请根据短文内容为每处空白确定一个最佳选项。 New Ideas Icelands President Olafur Grimsson is trying to drive carbon dioxide （二氧化碳） underground to （51） its release into the air. Over the next two years， a team of scientists will try to （52） carbon dioxide-charged water into the rock underground. Scientists say this should work. The CO2 will react with the rock to form a stable mineral that remains in the （53） for millions of years. If the experiment succeeds， Iceland could give the world a new （54） to reduce emissions. Sigurdur Gislason， a university professor in Iceland， says his country has an （55） over other countries： We have enormous amounts of clean （56） and a small society. You can do experiments here that you cant do anywhere else. In an attempt to cut back on the use of air conditioners during summer， the Japanese government in 2005 （57） a campaign to keep office temperatures at 28℃ in summer. Men were also encouraged to change business suits for （58） wear. in other words， no more ties. | 
