2017年2月25日雅思閲讀真題回憶 25日的雅思考試已經結束，小編為大家整理了2017年2月25日雅思閲讀真題回憶，可供參考。 Passage One題材：社會類題目：The concept of childhood in the western countries題型：簡答6，判斷7文章主旨：文章主要介紹了18世紀至19世紀，西方人們對兒童觀念的變化。一開始，人們把兒童看作是勞動的工具，使用童工，後來教育漸漸普及。
簡答1-6 ：1、What concept had become a controversial topic childhood development 2、What were middle aged children called? miniature adults 3、What economic development caused children become labour?industrialization 4、These children are called useful child 5、what are the two main activities of children at the end of 19th century?play and education6、待補充 判新7-13：7、FALSE According to Aries, during middle aged, children were unloved. 8、FALSE Aries s studies were based on reliable data. 9、NOT GIVEN The working time of children was as long as adults. 10、TRUE The school was By 20 century, almost all children need to go to of the result of Factory Act. 11、FALSE The Factory Act made sure that all children went to school. 12、TRUE13、NOT GIVEN Nowadays people focus more on the particular need of children. Passage Two題材：地質類題目：The Ice Age題型：選擇4，人名配對5，填空4文章主旨：文章主要討論了氣候變化帶來的影響。甶兩幅名畫預示未來的世界氣温會下降，並討論了全球氣温驟降所帶來的影響及應對措施 14-17選擇14、A預示未來會出現氣温下降15、D16、C17、D是什麼使部落遭受氣温影響：遷移受限制18-22人名配對18、C19、D20、B21、E22、A選項：A： Terrence byceB： William CurryC： Scientists worldwideD： reporters in National AcademyE： Bob Dickson 23-26填空23、heat24、the water is called (待補充)25、North Atlantic26、turn southward Passage Three題材：環境類題目：The effect of ocean to salinity題型：段落標題7配對3選擇4文章主旨：文章主要講了鹽分變化對農業的影響，並介紹了各種探測海水鹽分的方法，以及海水變卦和鹽度之間的關係。參考閲讀：Could Seawater Solve the Freshwater Crisis?With 1.8 billion people predicted to live in areas of extreme water scarcity by 2025, desalination-the removal of salt from water-is increasingly being proposed as a solution. But before desalination can make a real difference solving in the looming water crisis, officials and experts need to commit to overcoming obstacles that make the process expensive and inefficient, a newspaper argues. Scientists predict that by 2016, the amount of fresh water produce d by desalination plants will exceed 10 billion gallons (38 million cubic meters) a year, or double the rate in 2008. Modern desalination plants use a technology called reverse osmosis, pressing salty water through ultrathin, semipermeable plastic membranes. Unable to pass through, large molecules or ions, such as salt, are filtered out, so fresh water flows out the other side. This method wastes much less energy than earlier desalination techniques, such as heating seawater and harvesting fresh water from t he steam. But a typical reverse osmosis plant can still spend up to 40 percent of its operating costs on generating electricity to run t he system-a big reason engineers are searching for ways to cut cos ts and make plants more efficient, starting at the membrane level. Situation Normal： All Fouled Up? Reverse osmosis membranes have improved since their invention in the 1960s. Today's membranes do a better job of allowing water t o pass through and keeping salts out, for membranes are also more resistant to bacterial contamination, but that doesn't mean the problem of membrane fouling has been completely solved. When you operate a membrane, bacteria in the water will accumulate on the thin selecive layer, making it more difficult to squeeze water through, explained Menachem Elimelech, an environmental engineer at Yale University, who co-authored the new paper. Chlorine can be used to clear away the bacteria, but today's revers e osmosis membranes are still very sensitive to chlorine and degrade quickly when exposed to the harsh chemical. There should be a lot of focus to develop membranes that are chlorine resistant, Elimelech said. Prefab Desalination Plants?No matter how good the membranes become, however, reverse osmosis plants will need to become cheaper to build and operate if they're to meet the demands of an increasingly thirsty world, particularly in developing regions. One way to do this is to standardize plant components and methods and to create smaller, more efficient plants, said Yoram Cohen, a chemical and biomolecular engineering professor at the University of California, Los Angeles (UCLA). Why are [personal computers] so cheap? asked Cohen, who was not involved in the new review. It's because the technology is standardized. You can buy parts from anyone and exchange them or combine them into your own design. 以上就是2017年2月25日雅思閲讀真題回憶的全部內容，希望考生們能夠拿下雅思高分。
妙知谷
