标题: 大全 Test B-2 [打印本页] 作者: gjjemily 时间: 2010-5-2 23:41 标题: 大全 Test B-2 请教：大全 Test B-2
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. (E) an increased governmental role in the regulation and control of private sexual behavior
答案选A
我的逻辑是这样的：
London imposed regulation on local industry--->number of bird species seen in and around London has increased dramatically--->similar rules should be imposed in other major cities
根据取非削弱的思路： 若将A取非，则说明air-pollution problems are not caused almost entirely by local industry. 可是这并不能削弱结论阿？？