这道题目的一个选项很纠结！！！！！！！！！！！

jackabigail

By competing with rodents for seeds, black ants help control rodent populations that pose a public health risk.  However, a very aggressive species of blank 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 argument?
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. The use of pesticides to control Loma ants could have harmful effects on the environment.

D错在哪里啊？

jackabigail

对的，无关我可以理解。说削弱我理解不了，谢谢！

everine

black ants help control rodent populations that pose a public health risk

是rodent populations对公众健康有威胁~
所以要控制rodent数量
这个黑蚁起到了这样的作用~但是有种Loma ant的刺同样对人类有害
所以现在结论就是有一个计划要引进飞蚁~因为这个飞蚁是吃这个loma ant的所以会对公共健康有好处

让你加强一下的话
D说这个loma ant的刺对rodent也是致命的
对要不要引进飞蚁没什么影响吧
说削弱我觉得也算不上 算无关吧？不知道我讲得明白否。。

jackabigail

对不起，不明白。麻烦解释的详细点好吗？谢谢

everine

题目是说不要rodents健康啦是要它不健康~数量太多对人类不好

jackabigail

为什么？不明白，那个filies吃了它不仅有利于人类健康，还有利于rodents健康

onlyuhaibo

D是削弱。