学位英语

Natural Gas

Natural gas is produced from reservoirs deep beneath the earth's surface.It is a fossil fuel，meaning that it is derived from organic material buried in the earth millions of years ago.The main component of natural gas is methane(甲烷).

The popularity and use of clean natural gas has increased dramatically over the past 50 years as Dipeline infrastructure(基础设施)has been installed to deliver it conveniently and economically to millions of residential，commercial and industrial customers worldwide.Today，natural gas service is available in all 50 states，and is the leading energy choice for fueling American homes and indus-tries.More than 65 million American homes use natural gas.In fact，natural gas is the most eco-nomical source for home energy needs，costing one-third as much as electricity. In addition to heat-ing homes，much of the gas used in the United States is used as a raw material to manufacture a wide variety of products，from paint，to fibers for clothing，to plastics for healthcare，computing and fur-nishings. Natural gas is also used in a significant number of new electricity-generating power plants.

Natural gas is one of the safest and cleanest fuels available. It emits less pollution than other fossil fuels.dioxide(二氧化碳)and water vapor-the same substances emitted when humans ex-hale.Compared with some other fossil fuels，natural gas emits the least amount of carbon dioxide in-to the air when combusted(燃烧)-making natural gas the cleanest burning fossil fuel of all.The industry also is subject to substantial federal regulation in the areas of production and distribution，which help ensure it is provided to consumers safely and cleanly.

The United States consumes about one-third of the world's natural gas output，making it the lar-gest gas consuming region in the world.The U.S.Department of Energy's Energy Information Ad-ministration forecasts that natural gas demand will grow by more than 50 percent by 2025.

There are huge reserves of natural gas beneath the earth's surface.The largest reserves of natu-ral gas can be found in Russia，West and North Africa and the Middle East.LNG(液化天然气)has been produced domestically and imported in the United States for more than four decades.To-day，the leading importers of LNG are Japan，Korea，France and Spain.

23.Paragraph 2_______________

24.Paragraph 3_______________

25.Paragraph 4_______________

26.Paragraph 5_______________

A.Popularity and use of natural gas

B.Natural gas reserves and supply

C.Natural gas prices

D.Clean fuel of choice

E.Disadvantages of natural gas

F.Natural gas consumption

27.Natural gas is stored deep________.

28.Natural gas is recognized as the most economical energy source ________.

29.When manufacturing many products，people commonly use natural gas ________.

30.It is estimated that by 2050 that natural gas demand in the United States will increase________.

A.over the past 50 years

B.beneath the earth surface

C.by more than 50 percent

D.for more than four decades

E.as a raw material

F.for home energy needs

参考答案：

23.A [解析]本题考查的是对所读材料大意与主旨的掌握。本段中心意思是天然气被广泛应用以及各种用途。

24.D[解析]本题考查的是对所读材料大意与主旨的掌握。本段中心意思是天然气是现有能源中最安全和最干净的。

25.F[解析]本题考查的是对所读材料大意与主旨的掌握。本段中心意思是美国消费天然气的情况。

26.B [解析]本题考查的是对所读材料大意与主旨的掌握。本段中心意思是世界上天然气的储存和供应情况。

27.B [解析]本题考查的是对阐述文章的主旨事实与细节的了解。依据是第一段的第一句"Natural gas is procduced from reserVoirs deep beneath the earth's SUTface."

28.F [解析]本题考查的是对阐述文章的主旨事实与细节的了解。依据是第二段的第四句"In fact，natural gas is the most economical source for llome energy neecls，costing one-third as mueh as electricity".

29.E [解析]本题考查的是对阐述文章的主旨事实与细节的了解。依据是第二段的第五句话"In addition to heating homes，much of the gas usecl in the United States is usecl as a raw material to mamrflacture a wide variety of products，from paint，to fibers for clothing，to plastics for healtlacare，computing ancl fumishings."

30.C [解析]本题考查的是对阐述文章的主旨事实与细节的了解。依据是第四段的最后一句"The U.S. Department 0f Energy's Energy Information Administration forecasts that natural gas demancl will grow by more tllan 50 percent by 2025."

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