GWD-28-9

peiswanho

9. GWD28-Q9:

Early in the twentieth century, Lake Konfa became very polluted.  Recently fish populations have recovered as release of industrial pollutants has declined and the lake’s waters have become cleaner.  Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again.  However, a technology for preventing leaks is being installed.  Therefore, provided this technology is effective, those fears are groundless.

The argument depends on assuming which of the following?

A.     Apart from development related to the pipeline, there will be no new industrial development around the lake that will create renewed pollution in its waters.擴大範圍

B.       ！Other than the possibility of a leak, there is no realistic pollution threat posed to the lake by the pipeline’s construction. 排除他因


C.      There is no reason to believe that the leak-preventing technology would be ineffective when installed in the pipeline in Lake Konfa.否定的是結論中的條件而非前提

D.      Damage to the lake’s fish populations would be the only harm that a leak of oil from the pipeline would cause.漏油只傷害魚又能如何？跟魚數量有何干係？

E.       The species of fish that are present in Lake Konfa now are the same as those that were in the lake before it was affected by pollution.

這題是我不會寫信請教別人所回我的

但還是不太懂C和D為何這樣就能排解呢?

好心人士給個指引吧

謝謝

monkeymaru

其实你看一下结论：
Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again.

Fears是什么？1, revive pollution; 2, reduce fish population.
C 就像他写的，否定了条件，属于强词夺理型。文中说装了一个pipeline可能会引起fears. C说there is no reason to believe... 这个答案也have no reason 来得到这个结论吧。
D 对鱼population的damage是否是only harm其实和结论的fears 无关，就算不是only harm又怎样呢？