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标题: 请教一道题 [打印本页]

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作者: 米可可    时间: 2006-9-8 21:21
标题: 请教一道题

In the years since the city of London imposed strict air-pollution regulations on local industry, the number of bird species seen in and around London has increased dramatically. Similar air-pollution rules should be imposed in other major cities.

Each of the following is an assumption made in the argument above EXCEPT:

(A) In most major cities, air-pollution problems are caused almost entirely by local industry.

(B) Air-pollution regulations on industry have a significant impact on the quality of the air.

(C) The air-pollution problems of other major cities are basically similar to those once suffered by London.

(D) An increase in the number of bird species in and around a city is desirable.

(E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area.

为何答案是A啊？我选E。

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作者: yog    时间: 2006-9-9 01:52

请注意这句话：In the years since the city of London imposed strict air-pollution regulations on local industry。

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