【題目】The discussion on renewable energy has been going on for at least a decade and people have relied on fossil fuels almost entirely for more than a century. However, the situation when fossil fuels were the most efficient and the cheapest source of energy has been left far in the past. Many countries such as Germany and Sweden have already made significant efforts to fix this situation, employing numerous power plants working on the renewable resources of energy. The most effective among these resources is geothermal（地?zé)岬模?/span>energy.

Geothermal energy does not depend on the world’s economic and political situation as strongly as fossil fuels do. Besides, extracting（提煉）fossil fuels adds to the price of energy produced from them. Therefore, geothermal energy is much cheaper than traditional ones, saving up to 80% of the costs over fossil fuels.

Being a renewable resource, geothermal energy produces less waste and pollution than traditional energy sources. In geothermal systems, carbon dioxide makes up about 10% of air produced. Overall, in order to produce the electricity that can be used for one hour, the geothermal systems produce 0.1 pound of carbon dioxide and other harmful gases. For a comparison, a power plant producing from gas produces up to 2 pounds of carbon dioxide into the atmosphere, and those power plants that work on coal（煤）produce an astonishing 3.6 pounds of greenhouse gases.

Low costs is another reason why using geothermal power plants should be the first choice for many countries. Geothermal heat systems require 25% to 50% less energy for work compared with the traditional systems for heating or cooling. Besides, geothermal equipment is less big: due to the very nature of geothermal energy, geothermal power plants have only a few moving parts, all of which can be easily sheltered inside a relatively small building. What’s more, the life span of geothermal equipment is rather long. All these make geothermal power stations easy to build and keep.

【1】Fossil fuels are more expensive than geothermal energy partly because _______.

A. it is free to use geothermal energy

B. the production of fossil fuels costs a lot

C. fossil fuels are nearly used up

D. geothermal energy doesn’t depend on political situation

【2】According to Paragraph 3, what can be concluded from the comparison?

A. Geothermal energy is environmentally friendly.

B. Gas and coal are often used to produce electricity.

C. Coal is much more efficient than gas.

D. The geothermal systems don’t produce harmful gases.

【3】Geothermal equipment is usually not as big as that of traditional energy because of______.

A. the life span of geothermal equipment

B. geothermal power plants

C. the nature of geothermal energy

D. the small buildings

【4】What is the main idea of this passage?

A. Many countries have benefited from geothermal energy.

B. Geothermal energy is well accepted.

C. Fossil fuels are being run out of.

D. Geothermal energy has many advantages.

【答案】

【1】B

【2】A

【3】C

【4】D

【解析】當(dāng)前地?zé)豳Y源是最有效的最受歡迎的資源，它具有經(jīng)濟、環(huán)保、成本小等特點。

【1】B

細(xì)節(jié)推理題。根據(jù)第二段extracting（提煉）fossil fuels adds to the price of energy produced from them.可知提煉化石燃料成本較高，造成了化石燃料價格較高。故選B.

【2】A

推理判斷題。根據(jù)第三段geothermal energy produces less waste and pollution than traditional energy sources.和下文地?zé)嵯到y(tǒng)和發(fā)電廠產(chǎn)生二氧化碳的數(shù)量比較可知地?zé)崾潜容^環(huán)保的資源，故選A.

【3】C

細(xì)節(jié)推理題。根據(jù)最后一段due to the very nature of geothermal energy, geothermal power plants have only a few moving parts,可知由于地?zé)豳Y源的性質(zhì)，地?zé)嵩O(shè)備通常沒有傳統(tǒng)能源大，易移動。故選C.

【4】D

主旨大意題。當(dāng)前地?zé)豳Y源是最有效最受歡迎的資源，它具有經(jīng)濟、環(huán)保、成本小等特點。本文主要介紹的就是地?zé)崮茉吹膬?yōu)點，故選D.

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