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.（A）
(E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area.
答案是a
我觉得a是很有assumption作用的。
前提，因为英国有了air-pollution regulations on industry之后，鸟多了很多.
结论，其他城市也应该采用air-pollution regulations on industry。
assumption,local industry造成了污染。
我想问一下，是不是因为a太绝对了？如果说在一定程度上时local industry造成的，是不是就对了。
是不是有绝对次的选项都不能选呢？
不好意思，刚才搜错题号了，所以没有找到。
贴一个lawyer以前的解释——A错在almost entirely 。只要是主要就可以推出结论。
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