托福阅读真题小结题训练之地热能.docx

智课网TOEFL备考资料托福阅读真题小结题训练之地热能 摘要： 托福阅读小结题也就是托福阅读总结题，做这类题，需要考生能够对整篇文章有深度的了解，综合能力尤为重要，需要我们通过大量的习题练习综合才可以，以下就是我们专门从一些真题中挖掘出来的有深度的一些内容，特别分享给大家，希望对大家会有一定的帮助。 对一篇文章是否能够真正的理解，还是只是能看懂，大概明白说什么，这之间的差别是很明显的，如果你无法透彻的理解这篇文章的内容，那么答题也无从说起，今天，我们就针对阅读总结题，来给大家分享几道有代表性的练习题。 托福 阅读真题小结题训练：Geothermal Energy Earths internal heat, fueled by radioactivity, provides the energy for plate tectonics and continental drift, mountain building, and earthquakes. It can also be harnessed to drive electric generators and heat homes. Geothermal energy becomes available in a practical form when underground heat is transferred by water that is heated as it passes through a subsurface region of hot rocks (a heat reservoir) that may be hundreds or thousands of feet deep. The water is usually naturally occurring groundwater that seeps down along fractures in the rock; less typically, the water is artificially introduced by being pumped down from the surface. The water is brought to the surface, as a liquid or steam, through holes drilled for the purpose. By far the most abundant form of geothermal energy occurs at the relatively low temperatures of 80° to 180° centigrade. Water circulated through heat reservoirs in this temperature range is able to extract enough heat to warm residential, commercial, and industrial spaces. More than 20,000 apartments in France are now heated by warm underground water drawn from a heat reservoir in a geologic structure near Paris called the Paris Basin. Iceland sits on a volcanic structure known as the Mid-Atlantic Ridge. Reykjavik, the capital of Iceland, is entirely heated by geothermal energy derived from volcanic heat. Geothermal reservoirs with temperatures above 180° centigrade are useful for generating electricity. They occur primarily in regions of recent volcanic activity as hot, dry rock; natural hot water; or natural steam. The latter two sources are limited to those few areas where surface water seeps down through underground faults or fractures t