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  3. Answer Questions by referring to four radio reports on the hot wave in 2006 summer. Note: When more than one answer is requi

Answer Questions by referring to four radio reports on the hot wave in 2006 summer. Note: When more than one answer is requi

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问题     Answer Questions by referring to four radio reports on the hot wave in 2006 summer.
    Note: When more than one answer is required, these may be given in any order. Some choices may be required more than once.
    A=Report 1     B=Report 2     C=Report 3     D=Report 4
    Which report (s) say (s) that...
A
Report 1
    A new study requested by the U.S. Congress is helping clear up some of the controversies regarding global warming, It finds the warming of the northern hemisphere in the last decades of the 20th century was unprecedented in the past thousand years. It also says the decade of the 1990s was the warmest on record. Authors believe human activities are at least partly responsible for recent warming. The study comes as extreme weather has struck many parts of the United States. There was flooding in parts of the Midwest last week, more heavy rains this week in the southern and eastern United States. Scientists say that the warmer the air, the more evaporated water it holds. Winds pick up more moisture from the hotter ocean surfaces, resulting in heavier and more frequent downpours. Recent data compiled on wildfires indicate an increasing frequency in North America and elsewhere around the world. Scientists say generally over the last five decades snows are melting sooner and faster, producing hot, dry drought conditions in many parts of the world. Weather patterns have natural cycles, but this latest study suggests more frequent extremes of too dry and too wet conditions may exist for the rest of the decade and beyond.
B
Report 2
    Scientists observed the highest air pollution on record above the Arctic Circle in May. Air pollution has been linked to a number of medical problems including heart attacks, asthma and stroke, It is so hot in many parts of the U.S. that officials are cautioning people to stay indoors. Even short exposure to high temperatures can cause serious health problems. Heat is not the only danger factor. Hot weather with little or no wind can lead to high levels of air pollution, especially ozone. Last year researchers in Boston analyzed pollution rates in nine major U.S. cities. They found the risk of stroke was one percent higher on days with relatively higher air pollution. Scientists say while this increase may seem small, it has a huge effect, since the number of people living in pollution-prone cities is so great. Researchers say pollution particles in the air may enter the body through the lungs and irritate the wails of blood vessels, encouraging clots that travel to the brain. The Hopkins scientists found these fine particles can reach the small airways and the air sacks in the lungs. A study found a link between fine particles in air pollution and risk of death. It also found that reducing exposure to air pollution decreased the number of deaths associated with pollution.
C
Report 3
    Europe is baking under a heat wave that has sent temperatures soaring past 36 degrees Celsius in some places. The sizzling weather is blamed for the deaths of at least half a dozen people. Temperatures in parts of France were expected to soar as high as 36 degrees Celsius Wednesday. Other parts of Europe are expected to be even hotter. So far, the heat wave has killed at least six people around Europe, including three in France. The heat is accompanied by unusually dry weather in many places. The sizzling scenario seems very similar to the heat wave of 2003, when heat was linked to the deaths of roughly 30,000 people around Europe, half of them in France. Things are different this summer. French social workers and ordinary French are checking in on older people, to make sure they’re OK. The government has established a weather warning sys tern, and a help hot line for the elderly and other fragile people. Other European countries are taking similar preventative measures. Nobody wants a repeat of the killer heat wave of 2003.
D
Report 4
    Eleven days of triple digit temperatures in California are taking a toll on the state agricultural industry. Meteorologists expect the deadly heat wave that has killed at least 60 people could subside by this weekend. But the relief may be too late for many California farmers. California dairy farmer Hank Van Excel is doing his best to keep his herds comfortable. But the effect of the heal on his dairy cows is evident. He has lost 14 cows and says milk production is down more than 20 percent. The heat has led to emergency declarations in several counties. The heat has been unprecedented. It’s been oppressively hot at night. All of these factors coming together have made it very challenging for the local community. "And California’s $50-billion-a-year dairy industry is not the only victim. In vineyard, the scorching temperatures will affect the taste of the wines and grapes are beyond raisin. Over in the tomato fields, the heat has killed about 15 percent of the blossoms that typically yield 46 000 tons of tomatoes per season. People obviously losing money as the days continue to be hot. It’s a story repeated in peach orchards and walnut groves and melon patches up and down the state. It’s too early to assess total damages but consumers will feel the heat in their pocketbooks. The consumers deal with it in the prices they’re going to pay when they go to the store or when they go to the restaurant".
选项 A、 
B、 
C、 
D、 
答案B
解析 关于air pollution和health/medical problems的内容见于Report 2(B部分)。其中第六句指出：Hot weather with little or no wind...especially ozone，即炎热无风的天气导致空气污染尤其是空气中的臭氧含量加剧，而后面则分析了这种空气污染对于人体健康的影响。因此本题答案是B。
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