急求，岳毒 机经lepidoptera 片里面第一题。明天上考场了

newlife2010

我水平太次了，实在不知道第一题为什么选择B。这篇文章读得就有些吃力，有大牛解释一下吗？谢谢。

T-9-20:GWD-13-34:

Which of the following, if true, would most weaken theauthor’s conclusion in lines 25-30?
A. New research reveals that the number ofspecies of birds and parasites that prey on lepidoptera has droppedsignificantly in recent years.
B. New experiments in which the habitats of lepidoptera are altered in previously untried ways result in theshortening of lepidoptera population cycles.
C. Recent experiments have revealed that thenuclear polyhedrosis virus is present in a number of predators and parasites oflepidoptera.
D. Differences among the habitats oflepidoptera species make it difficult to assess the effects of weather onlepidoptera population cycles.
E. Viral disease is typicallyobserved in a large proportion of the lepidoptera population.

aaronkib

實驗裡說的是排除了棲息地的因素，一定是略食者或其他原因（他因），所以weaken就是b選項說新研究發現棲息地的改變會影響到毛毛蟲的life cycle

newlife2010

大概懂了，谢谢