black surfaces already, in the form of asphalt （柏油） roads?

　　Ten years ago, this thought came into the mind of Arian de Bondt, a Dutch engineer．He finally persuaded his boss to follow it up．The result is that their building is now heated in winter and cooled in summer by a system that relies on the surface of the road outside．

　　The heat-collector is a system of connected water pipes．Most of them run from one side of the street to the other, just under the asphalt road．Some, however, dive deep into the ground．

　　When the street surface gets hot in summer, water pumped through the pipes picks up this heat and takes it underground through one of the diving pipes．At a depth of 100 meters lies a natural aquifer （蓄水层） into which several heat exchangers （交换器） have been built．The hot water from the street runs through these exchangers, warming the ground-water, before returning to the surface through another pipe．The aquifer is thus used as a heat store．

　　In winter, the working system is changed slightly．Water is pumped through the heat exchangers to pick up the heat stored during summer．This water goes into the building and is used to warm the place up．After performing that task, it is pumped under the asphalt and its remaining heat keeps the road free of snow and ice．

　　46．Which of the following is true according to the first two paragraphs?

【2017届广东省广州市天河区高考英语一轮复习同步练习：16（含答案）】相关文章：

★ 浙江省湖州市2014高考英语阅读理解一轮（暑假）精炼（18）含答案

★ 重庆市2014高考英语阅读理解一轮（精品）训练题（7）附答案

★ 四川省广安市2014高考英语一轮基础训练题（7）及答案

★ 2017高考四川省广安市英语阅读理解一轮系列训练：26（含解析）

★ 2017高考四川省广安市英语阅读理解一轮系列训练：24（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (70)

★ 重庆市2014高考英语阅读理解一轮（精品）训练题（18）附答案

★ 2014届高考英语一轮复习课时作业(四)必修1Module 4《A Social Survey—My Neighbourhood》（外研版）

★ 浙江省湖州市2014高考英语阅读理解一轮（暑假）精炼（15）含答案

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（17）及答案