题目
The term “off the grid” refers to living ina self- sufficient manner without reliance on one or more public utilities. On13 April 2006, USA Today reported that there were some 180,000 familiesliving off-grid in America, a figure that has jumped 33 percent a year for adecade. Because many third-world citizens have never had the chance to go onthe grid, current estimates are that 1.7 billion people live off-gridworldwide. Off-the-grid homes do not rely on municipal water supply, natural gas, electricalpower grid or similar utility services. A true “off the grid” house is able tooperate independently of all traditional public services. Electrical power canbe generated on-site with renewable sources such as solar, wind or geothermal (地热) energy; with a generator and adequate fuelreserves; or simply done without. Such electricity system is called astand-alone power system. On-site water sources can include a well, stream, orlake. Depending on the water source, this may include pumps and / orfiltration. Rainwater can also be harvested. In his book How to Live Off-grid, Nick Rosen lists seven reasons forgoing off-grid. The top two are saving money, and reducing the carbonfootprint. Another is survivalism, which means preparing for emergencies suchas disruptions in social or political order. Others include preparing for thecollapse of the oil economy and bringing life back to the countryside. Going off-grid can be done to lower the environmental impact of living, asthe typically limited amount of on-site renewable energy available is anincentive to reduce its use. But if energy usage is not reduced, going off-gridactually has a larger environmental impact against using the grid, due to thelower efficiencies of the components. It is often done to residential buildingsonly occasionally occupied, such as vacation cabins, to avoid high initialcosts of traditional utility connections. Other persons choose to live inhouses where the cost of outside utilities is prohibitive, or of such adistance away as to be impractical.21. What does the passage say about people living in third-world countries?A. Their homes are getting more dependent on public utilities.B. Thenumber of them living off-grid is increasing by 33 percent a year.C. About 1.7 billion of them are currently living off-grid.D. Many of them have no access to modern public utilities.
The term “off the grid” refers to living in
a self- sufficient manner without reliance on one or more public utilities. On
13 April 2006, USA Today reported that there were some 180,000 families
living off-grid in America, a figure that has jumped 33 percent a year for a
decade. Because many third-world citizens have never had the chance to go on
the grid, current estimates are that 1.7 billion people live off-grid
worldwide.
Off-the-grid homes do not rely on municipal water supply, natural gas, electrical
power grid or similar utility services. A true “off the grid” house is able to
operate independently of all traditional public services. Electrical power can
be generated on-site with renewable sources such as solar, wind or geothermal (地热) energy; with a generator and adequate fuel
reserves; or simply done without. Such electricity system is called a
stand-alone power system. On-site water sources can include a well, stream, or
lake. Depending on the water source, this may include pumps and / or
filtration. Rainwater can also be harvested.
In his book How to Live Off-grid, Nick Rosen lists seven reasons for
going off-grid. The top two are saving money, and reducing the carbon
footprint. Another is survivalism, which means preparing for emergencies such
as disruptions in social or political order. Others include preparing for the
collapse of the oil economy and bringing life back to the countryside.
Going off-grid can be done to lower the environmental impact of living, as
the typically limited amount of on-site renewable energy available is an
incentive to reduce its use. But if energy usage is not reduced, going off-grid
actually has a larger environmental impact against using the grid, due to the
lower efficiencies of the components. It is often done to residential buildings
only occasionally occupied, such as vacation cabins, to avoid high initial
costs of traditional utility connections. Other persons choose to live in
houses where the cost of outside utilities is prohibitive, or of such a
distance away as to be impractical.
21. What does the passage say about people living in third-world countries?
- A. Their homes are getting more dependent on public utilities.
- B. The number of them living off-grid is increasing by 33 percent a year.
- C. About 1.7 billion of them are currently living off-grid.
- D. Many of them have no access to modern public utilities.
题目解答
答案
D
解析
步骤 1：理解背景信息
文章提到，许多第三世界国家的公民从未有机会使用公共设施，因此目前估计有17亿人生活在离网状态。这表明许多第三世界国家的居民没有使用现代公共设施的机会。
步骤 2：分析选项
A. 他们的家庭越来越依赖公共设施。这与文章内容不符，因为文章提到的是第三世界国家的公民从未有机会使用公共设施。
B. 他们中生活在离网状态的人数每年增加33%。这与文章内容不符，因为文章提到的是美国离网家庭的数量每年增加33%。
C. 大约17亿人目前生活在离网状态。这与文章内容相符，但没有直接回答问题。
D. 许多人没有使用现代公共设施的机会。这与文章内容相符，因为文章提到许多第三世界国家的公民从未有机会使用公共设施。
步骤 3：选择正确答案
根据文章内容，正确答案是D，因为文章提到许多第三世界国家的公民从未有机会使用公共设施。
文章提到，许多第三世界国家的公民从未有机会使用公共设施，因此目前估计有17亿人生活在离网状态。这表明许多第三世界国家的居民没有使用现代公共设施的机会。
步骤 2：分析选项
A. 他们的家庭越来越依赖公共设施。这与文章内容不符，因为文章提到的是第三世界国家的公民从未有机会使用公共设施。
B. 他们中生活在离网状态的人数每年增加33%。这与文章内容不符，因为文章提到的是美国离网家庭的数量每年增加33%。
C. 大约17亿人目前生活在离网状态。这与文章内容相符，但没有直接回答问题。
D. 许多人没有使用现代公共设施的机会。这与文章内容相符，因为文章提到许多第三世界国家的公民从未有机会使用公共设施。
步骤 3：选择正确答案
根据文章内容，正确答案是D，因为文章提到许多第三世界国家的公民从未有机会使用公共设施。