�、�.閱讀理解

　　Born out of technology developed in the search for the world's most powerful bomb, nuclear power has ever since cast a heavy shadow over its benefits.

　　The pictures of what was left of Hiroshima and Nagasaki in 1945 after the United States dropped the atomic bomb left the world with a feeling of mental pain—200 000 people died in a second, and once­crowded cities were destroyed completely. But it was the cloud of radiation that couldn't be seen and no one could defend against that affected generations. Popular American movies like the 1983 film The Day After played on people's fears with pictures of a nuclear winter so destructive that it would kill almost every living thing. Yet, by that same year, nuclear energy plants were being built from Argentina to South Korea to satisfy the demand for cheap, dependable sources of energy. According to the International Atomic Energy Agency, by 2009, nuclear energy produced almost 14 percent of the world's electricity supplies. And the total demand for energy worldwide has continued to rise, although the latest nuclear disaster at Japan's Fukushima plant appears to have discouraged enthusiasm for the energy source.

　　Other major sources of energy have their own benefits—and their own set of risks. Oil is limited, likely to be affected by political pressure and rising prices, and has caused serious environmental disasters of its own. Coal is blamed for serious air pollution, and mining for coal is an often perilous profession: coal mining accidents from Colombia to China have resulted in thousands of deaths. Natural gas pollutes the air less than oil or coal, but old and leakprone(容易泄漏的) natural gas pipelines can explode, killing and injuring dozens of people. Water power is a renewable and clean source of energy, but building dams requires a lot of land, and if they burst, the environmental damage is widespread.

　　文章大意：本文是一篇說明文。作者通過列舉核能、石油、煤、天然氣、水能的優(yōu)缺點(diǎn)，說明了任何一種能源都有其危險(xiǎn)的一面。

　　1.It can be inferred from the passage that ________.

　　A.nuclear energy is a double­edged sword

　　B.the demand for nuclear energy is declining

　　C.the nuclear disaster in Japan meant the end of nuclear energy

　　D.nuclear energy produces one­third of the world's electricity supplies

　　答案：A　推理判斷題。根據(jù)第二段可知，一方面原子彈的使用致使數(shù)十萬人死亡，整座城市被毀，另一方面核能源給人類提供了近14%的電能。由此可知，核能是一把雙刃劍。故選A。

　　2.The underlined word “perilous” in the last paragraph is closest in meaning to “________”.

　　A.high­rewarding　　　　　 B.tiring

　　C.appealing D.dangerous

　　答案：D　詞義猜測(cè)題。根據(jù)本句話中冒號(hào)后的內(nèi)容“coal mining accidents from Colombia to China have resulted in thousands of deaths.”可知，煤礦發(fā)生的事故已經(jīng)奪取了許多人的生命，由此可推知，此處指采煤是一種危險(xiǎn)的工作。故選D，意為“危險(xiǎn)的”。

　　3.What's the advantage of natural gas over oil and coal according to the passage?

　　A.It is easier to transport. B.It causes less air pollution.

　　C.It requires less effort to get.D.It is more abundant in nature.

　　答案：B　細(xì)節(jié)理解題。根據(jù)最后一段中的“Natural gas pollutes the air less than oil or coal”可知，答案選B。

　　4What's the writer's purpose in writing this passage?

　　A.To advocate saving energy.

　　B.To promote nuclear energy.

　　C.To inform the risks of power.

　　D.To raise environmental awareness.

　　答案：C　寫作意圖題。作者首先分析了核能既能大規(guī)模地殺傷人類又能給人類提供能源，是一把雙刃劍;接著又說明了石油、煤、天然氣、水能這些看起來似乎沒有危險(xiǎn)的能源實(shí)際上也是暗藏著危險(xiǎn)。由此可知，作者的目的是提醒我們?nèi)魏文茉炊季哂形ｋU(xiǎn)性。故選C。