内容正文:
人教必修第一册
Unit 4 NATURAL DISASTERS
阅读理解
[2024·浙江1月考,阅读C篇]
On September 7, 1991, the costliest hailstorm (雹暴) in Canadian history hit Calgarys southern suburbs. As a result, since 1996 a group of insurance companies have spent about $2 million per year on the Alberta Hail Suppression Project. Airplanes seed threatening storm cells with a chemical to make small ice crystals fall as rain before they can grow into dangerous hailstones. But farmers in east-central Alberta—downwind of the hail project flights—worry that precious moisture (水分) is being stolen from their thirsty land by the cloud seeding.
Norman Stienwand, who farms in that area, has been addressing public meetings on this issue for years. “Basically, the provincial government is letting the insurance companies protect the Calgary-Edmonton urban area from hail,” Mr Stienwand says, “but theyre increasing drought risk as far east as Saskatchewan.”
The Alberta hail project is managed by Terry Krauss, a cloud physicist who works for Weather Modification Inc. of Fargo, North Dakota. “We affect only a very small percentage of the total moisture in the air, so we cannot be causing drought,” Dr Krauss says. “In fact, we may be helping increase the moisture downwind by creating wetter ground.”
One doubter about the safety of cloud seeding is Chuck Doswell, a research scientist who just retired from the University of Oklahoma. “In 1999, I personally saw significant tornadoes (龙卷风) form from a seeded storm cell in Kansas,” Dr Doswell says. “Does cloud seeding create killer storms or reduce moisture downwind? No one really knows, of course, but the seeding goes on.”
Given the degree of doubt, Mr Stienwand suggests, “It would be wise to stop cloud seeding.” In practice, doubt has had the opposite effect. Due to the lack of scientific proof concerning their impacts, no one has succeeded in winning a lawsuit against cloud-seeding companies. Hence, private climate engineering can proceed in relative legal safety.
( )28.What does the project aim to do?
A.Conserve moisture in the soil.
B.Prevent the formation of hailstones.
C.Forecast disastrous hailstorms.
D.Investigate chemical use in farming.
( )29.Who are opposed to the project?
A.Farmers in east-central Alberta.
B.Managers of insurance companies.
C.Provincial government officials.
D.Residents of Calgary and Edmonton.
( )30.Why does Dr Doswell mention the tornadoes he saw in 1999?
A.To compare different kinds of seeding methods.
B.To illustrate the development of big hailstorms.
C.To indicate a possible danger of cloud seeding.
D.To show the link between storms and moisture.
( )31.What can we infer from the last paragraph?
A.Scientific studies have proved Stienwand right.
B.Private climate engineering is illegal in Canada.
C.The doubt about cloud seeding has disappeared.
D.Cloud-seeding companies will continue to exist.
【文章大意】 这是一篇说明文。文章主要介绍了加拿大阿尔伯塔省防雹干预项目,以及不同利益相关方对该项目所持的不同态度。
28.B 细节理解题。根据第一段中“As a result, since 1996 a group of insurance companies have spent about $2 million per year on the Alberta Hail Suppression Project. Airplanes seed threatening storm cells with a chemical to make small ice crystals fall as rain before they can grow into dangerous hailstones.”可知,这个项目的目标是防止冰雹形成。故选B项。
29.A 细节理解题。根据第一段中“But farmers in east-central Alberta—downwind of the hail project flights—worry that precious moisture (水分) is being stolen from their thirsty land by the cloud seeding.”可知,阿尔伯塔省中东部的农民反对这个项目。故选A项。
30.C 推理判断题。根据倒数第二段“One doubter about the safety of cloud seeding is Chuck Doswell, a research scientist who just retired from the University of Oklahoma. ‘In 1999, I personally saw significant tornadoes (龙卷风) form from a seeded storm cell in Kansas,’ Dr Doswell says. ‘Does cloud seeding create killer storms or reduce moisture downwind? No one really knows, of course, but the seeding goes on.’”可推知,多斯韦尔博士提到他在1999年看到的龙卷风是为了暗示人工降雨可能带来的危险。故选C项。
31.D 推理判断题。根据最后一段“Given the degree of doubt, Mr Stienwand suggests, ‘It would be wise to stop cloud seeding.’ In practice, doubt has had the opposite effect. Due to the lack of scientific proof concerning their impacts, no one has succeeded in winning a lawsuit against cloud-seeding companies. Hence, private climate engineering can proceed in relative legal safety.”可推知,人工降雨公司将继续存在。故选D项。
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