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托福阅读句子插入题：Geothermal Energy

2015-08-24 16:18:01来源：网络

　　【托福阅读题型：Geothermal Energy句子插入题】托福阅读中句子插入题是重要题型之一。根据托福阅读题型不同来进行专项练习，是短期提高托福阅读能力的有效方法。同学们需要多加练习哦!

　　查看全部：托福阅读题型分类练习之句子插入题

　　托福阅读句子插入题：Geothermal Energy

　　Earth's 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 isusually 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.■(Geothermal Energy)

　　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.

　　! Look at the four squares [■] that indicate where the following sentence could be added to the passage.

　　In either case, the heated water will usually be under considerable pressure, and so may have a temperature that is well above its sea-level boiling point of 100° centigrade.

　　Where would the sentence best fit? Click on a square to add the sentence to the passage.

　　答案见下一页：

本文关键字: 托福阅读题型 托福阅读训练 句子插入题

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