B
Modern life is highly dependent on energy to heat buildings,cook food,and run automobiles and machinery.In many volcanic regions geothermal(地热的)resources are exploited either directly for heat,or indirectly for the production of electricity.Geothermal energy may be renewable,if it is used at a lower rate than the natural heating.It is also clean compared with the burning of fossil fuels.
Volcanic ash and lava from eruptions often cover large areas of ground and are detrimental to life,but over time these same materials gather to form soils.The resulting volcanic soils have unique physical and chemical features.Some mountainous volcanic regions are famous for their production of coffee or wine,owing to volcanic soils.
Volcanic rocks are the most plentiful rock in many areas and are often employed as a building material for structures,road beds and walls.The altered volcanic clay,bentonite(斑脱土),is commonly used in diverse products from drilling mud to cosmetics.
Hot springs and fumaroles are often found in close association with volcanoes.This combination has led to the development of many spas and resorts at volcanoes.The attractive mountainous volcanic areas are also attractive sites for hiking,camping,and climbing as well viewing the various surface expressions of volcanic activities.
Ironically,much of what we know of some ancient civilizations was instantly protected by the powerful force of volcanic eruptions.Examples include the well-known Roman cities of Pompeii and Herculaneum,and the Bronze Age Akrotiri in the Aegean.
【2017届《名师A计划》高考英语新人教版一轮复习配套练习:选修6 Unit 5《The power of nature》(含解析)】相关文章:
★ 2014届高考英语一轮复习课时作业(二十五)必修5Module 1《British and American English》(外研版)
★ 【北京专用】2014届高考英语一轮复习方案课时作业:选修8 Unit 4 Pygmalion
★ 贵州省贵阳市2014高考英语(新人教版)一轮阅读训练(28)附答案
★ 【人教版】2014届高考英语一轮复习指导考点针对练:必修5 unit1《Great scientists》
★ 2017高考四川省广安市英语阅读理解一轮系列训练:19(含解析)
★ 贵州省贵阳市2014高考英语(新人教版)一轮阅读训练(37)附答案
★ 【三维设计】2017版(江苏专用)二轮复习练习:必修1 Unit 3《Looking good feeling good》课时跟踪检测B卷(含解析)
★ 【浙江专用】2014届高考英语一轮复习课时作业(二十二)必修5Unit 2《The United Kingdom》
★ (安徽专用)2014届高考英语一轮复习方案 作业手册(16)模块6 《Unit 16 Stories》(含解析) 北师大版必修1
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21