博智教育 GMAT培训 GMAT每日一题
Which of the following most logically completes the argument?
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, since.
(A) ant flies do not attack black ants other than Loma ants
(B) Loma ants are less effective than many bird species in competing with rodents for seeds
(C) certain other species of black ants are more effective than Loma ants in competing with rodents for seeds
(D) the sting of Loma ants can also be fatal to rodents
(E) some pesticides that could be used to control Loma ants are harmful to the environment
题目分析：问的是引入ant files对控制ants有好处，因为什么？A说因为这种file只吃black ants不吃别的ants，那不就控制住了嘛，比较顺，留着。B说ants比很多鸟对于rodents效率低很多，这个和我引入files是否靠谱没什么关系，杀。C说其他类型的black ants，我谈的就是file控制这种ants，不是其他类型的，杀。D说这种ants的刺对于rodents也是致命的，这个和引入files是否靠谱也没什么关系，杀。E说一些控制ants的杀虫剂对环境有害，这个和引入files有什么关系，杀。
博智教育 GMAT培训 GMAT每日一题
