GWD-13-31 没有讨论过的点，麻烦大家

miss绿光 · 发表于 2011-10-1 12:30:07

By competing with rodents for seeds, black ants help control rodent populations that pose a public health risk. However, a very aggressive species of black ant, the Loma ant, which has recently invaded a certain region, has a venomous sting that is often fatal to humans. Therefore, the planned introduction into that region of ant flies, which prey on Loma ants, would benefit public health.

Which of the following, if true, most strengthens the arguments?

A. Ant flies do not attack black ants other than Loma ants.
E. The use of pesticides to control Loma ants could have harmful effects on the enviroment.
现在理解A对了，但是还是不能理解为什么E不对。
我的想法是，原来用的pesticides会有harmful effects，所以我现在引入planner introduction of ant files，就不用再用那些有harmful effects的pesticides。

请大家纠正我~谢谢。

九段泡面高手 · 发表于 2011-10-2 21:47:23

E是假设用的话，会有harmful effects??。而不是现在已经在用了??。而且说实话做逻辑的时候经常遇到这种可选可不选的选项，一般我不选的理由就是选项中没有题目中出现的信息，一般加强或削弱的选项都要针对文中的信息来加强或者驳斥。有点牵强但是能选中就行

miss绿光 · 发表于 2011-10-2 22:14:49

谢谢你~这个could have done确实有假设的意味啊
还是通过不断的比较来求得最佳解吧~~

GWD-13-31 没有讨论过的点，麻烦大家

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