本文“2017年2月25日最新托福机经”由出国留学网托福栏目整理，希望对考生有所帮助。
话题分类：Environment 属性：重点预测 话题
关于硫化物是否对环境和健康有着积极或消极的影响。
阅读要点
1. 硫化物污染大气，降低能见度; 2. 导致酸雨的产生，进而damage crops; 3. 对人类健康有不好的影响，e.g.: breathing problem
听力要点
教授觉得passage的叙述太过exaggerated。 1. 硫化物prevents sunlight from heating the earth, cool the earth,舒缓全球暖化; 2. 二氧化硫不是主要造成酸雨的因素，是NO3(氮化物); 3. 硫化物不是唯一危及人类健康的因素，仍有其它因素，硫化物只加重病情的恶化。
范文
The lecture contradicts the view mentioned in the reading with strong supporting evidences presented, aiming to further demonstrate the positive effect of sulphur dioxide. Firstly, from the perspective of its harm to the atmosphere, the professor states his doubt, because according to the lecture, although sulphur dioxide is considered pollutant in the air, 登录查看全部内容 2016年7月9日托福机经：第2题 来源：北美 话题分类：Archaeology 属性：重点预测
话题
讨论了英国考古学面临的三大难题和突破困境的方法。
阅读要点
总论点：英国考古学面临三大难题分论点1：有考古价值的建筑被破坏分论点2：政府提供的资金不足以考古研究分论点3：考古学学生就业困难
听力要点
总论点：英国考古学突破困境的三大方法分论点1：任何建筑工程开始前都必须由考古学家评估和批准分论点2：建筑公司也应该提供资金分论点3：这个方案实施后就会创造出许多就业机会
范文
The professor explains three resolutions adopted in the United Kingdom, each of which has successfully addressed the problems mentioned in the reading passage concerning the preservation of artifacts, the funding of archaeological research, and career prospects in archaeology.First, the professor points out that according to the new guidelines, any construction project must undergo an evaluation process for the archaeological value of the site to be ascertained. If a site is determi.....