Each of the following, if true, would strengthen the argument EXCEPT:
(A) Of the various types of radiation blocked by atmospheric ozone, UV-B is the only type that can damage genes.
(B) Amphibian populations are declining far more rapidly than are the populations of nonamphibian species whose tissues and eggs have more natural protection from UV-B.
(C) Atmospheric ozone has been significantly depleted above all the areas of the world in which amphibian populations are declining.
(D) The natural habitat of amphibians has not become smaller over the past century.
(E) Amphibian populations have declined continuously for the last 50 years.
請問這題答案是 A 還是 D 呀 ?? D 是用" 否定他因" 的方式, 時間拉長至過去的一世紀, 還是有支持的作用, 相反的, A 指出只有 UV-B 是唯一會破壞基因的, 但是沒有臭氧層的枯竭, 不論如何, 即使是 UV-B 也不會破壞基因的, 所以答案是不是 A 比較好 ???
