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  3. The following paragraphs are given in a wrong order. For Questions 41-45, you are required to reorganize these paragraphs into a

The following paragraphs are given in a wrong order. For Questions 41-45, you are required to reorganize these paragraphs into a

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问题 The following paragraphs are given in a wrong order. For Questions 41-45, you are required to reorganize these paragraphs into a coherent article by choosing from the list A-G. Some of the paragraphs have been placed for you. (10 points)

A. Meanwhile, studies have shown that the carbon dioxide concentration in our atmosphere has been steadily increasing since 1958. Even though the rate of emissions from fossil fuels has been reduced, concentration has risen consistently.
B. Proof of warming includes a decrease in the amount of snow that covers the Northern Hemisphere, a simultaneous decrease in Arctic Sea ice, continued melting of alpine glaciers, and a rise in sea level. Rain has even been reported for the first time in Antarctica, and an ice-free patch of ocean about a mile wide has recently opened near the North Pole.
C. But the real benefit of Earth Homes will be the long-term sustainability of our planet. It should be no secret that the planet is experiencing unusual Weather and climate abnormalities. The 10 hottest years in recorded history have all been in the last 15 years; the 1990s were the hottest decade on record. The Mid-western heat wave of 1995 killed 669 people in Chicago. In 1996, we had a season of record heat spells, and 1997 was the single warmest year on record—until 1998 shattered global temperature records. Record-high temperatures throughout the southern United States during the summer of 1998 forced the shutdown of Walt Disney World’s water parks because of the threat of a viral encephalitis outbreak. The United Nations and insurers blame unusual weather for thousands of deaths and billions of dollars in damage.
D. In 1995, the size of the ozone hole over Antarctica doubled to about the size of Europe. For the first time in recorded history, the hole stretched over populated areas, exposing residents in southern Chile and Argentina to very high levels of ultraviolet (UV) radiation. Studies have shown that a 1% decrease in ozone in the stratosphere produces a 2% increase in UV radiation reaching the ground, posing more risks to humans. In the United States, for instance, between a third and a half of all cancers are skin cancers widely blamed on UV exposure. Australia has the highest rate of skin cancer in the world, with estimates that two out of three people will get at least one skin cancer in their lifetime.
E. "Many scientists agree that the emissions resulting from human activities are substantially increasing the atmospheric concentration of the greenhouse gases," writes Jeremy Leggett in his book Global Warming: The Greenpeace Report (Oxford University Press, 1990). "These increases will enhance the greenhouse effect, resulting in warming of the earth’s surface." In 1990, scientists predicted that, if greenhouse gas emissions are not sharply decreased, we might experience a 1℃ to 3℃ rise in global temperatures. They suggested that we would have to cut in half our use of coal, oil, and gas in order to lower our emissions enough to maintain concentrations of greenhouse gases at the current levels.
F. A variety of significant, attractive short-term benefits will drive the development of modern self-sufficient homes. These include security from severe weather, climate changes, and natural disasters; security from infectious diseases and related health problems; a fresh and nutritious diet; a dependable food supply; and security from global unrest.
G. Add to this scenario the possibility of natural disasters such as volcanic activity, comets, solar winds, sunspot activity, or earthquakes that could drastically affect world security. How long is the stability of the planet going to be immune from these types of significant occurrences? Winter storms and random weather extremes such as record-breaking extreme hot, cold, and winds are signals that we should act on the results of climate change. Through its innovations, the self-sufficient home is one way of helping limit human environmental degradation and increasing resource sustainability.

Order: F is the first paragraph and G is the last.
选项
答案B
解析 文章第三段后面提到，科学家提出我们应当将目前所使用的煤、石油、天然气的耗量减少一半，以降低废气的排放，使温室效应保持在当前水平上。B项紧接着这一话题对气候的变暖提出了若干证明：南极洲首次出现了降雨，北极海面形成了1英里宽的无冰地带。因此该项为第四段。
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