2. In the years since the city of
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
(D) An increase in the number of bird species in and around a city is desirable.(A)
(E) The increased sightings of bird species in and around
why choose A? I choose D.
Thanks for replying.
我是这么理解的:
except 表明:如果选项不……,结论也能成立
A 大多数城市里,空气污染问题几乎完全是由当地工业造成的
如果不是完全由工业造成,其他一些问题也会造成污染,但只要工业会污染空气,就需要有执行相关政策,这样至少可以增加一点鸟的数量。
D 希望在城市里或城市周围增加鸟的数量。
如果不希望增加鸟的数量,那也不需要采取相关政策控制空气污染了。结论就不成立了。
不知讲的对不对,共同探讨
本推理的结论是Similar air-pollution rules should be imposed in other major cities, 其依据是London imposed stritct air-pollution regulations on local industry从而导致London周围的鸟类(可见的)数量增加。推理方法用到了类比,london 和其他城市,以及imposed stritct air-pollution regulations on local industry和鸟类(可见的)数量增加的因果关系,但没有涉及其它城市的污染的原因是almost entirely by local industry or not.
所以A和本题无关
好象很多人问这题啊 在太傻上也看到过这个题目。
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