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题库 / Prep2012-CR-39
Which of the following most logically completes the passage?
Each species of moth has an optimal body temperature for effective flight, and when air temperatures fall much below that temperature, the moths typically have to remain inactive on vegetation for extended periods, leaving them highly vulnerable to predators. In general, larger moths can fly faster than smaller ones and hence have a better chance of evading flying predators, but they also have higher optimal body temperatures, which explains why ______.
large moths are generally able to maneuver better in flight than smaller moths
large moths are proportionally much more common in warm climates than in cool climates
small moths are more likely than large moths to be effectively camouflaged while on vegetation
large moths typically have wings that are larger in proportion to their body size than smaller moths do
most predators of moths prey not only on several different species of moth but also on various species of other insects
大moth的体温高，能解释什么？
两个角度理解，首先寒冷地区大moth会少，因为气温很容易就低于体温了，他就不活跃了
反之温暖地区活跃的大moth就会更多，因为温度合适
一般来说large moth比small moth飞得更快，更有效躲避捕食者，并且有更高的最佳体温。这就解释了______
choice b, large moths更高比例得出现在温暖的地方，比起寒冷的地方。correct，即large moth存在于一个更不容易让空气温度低于最佳体温的地方
语境！！！
C 项说的是small moths更effective 但是按照argument描述的应该是large moths更effectively camouflaged while on vegetation C项说反啦（我也错了 看得太不仔细啦）
不对不对 再去看了一遍题 题上并没有提到camouflage 应该是irrelevant登录 或 注册 后可以参加讨论
2.In general, larger moths can fly faster than smaller ones and hence have a better chance of evading flying predators, but they also have higher optimal body temperatures,
条件2说如果气温适宜，moths能飞的话（没被冻住），大moth的飞行技巧更高，所以能有效避免被捕食——就是说气温高的话，那就是大moth的天下；因为小moth飞行起来更容易被捕食，在一个period内被捕食率很高，逐渐的就只剩下大moth。
其次，but 后面的they 是指代最近的flying predators 说这些predators 在气温低的时候也有比da month更强的飞行能力所以会对他们造成更大的威胁。总结：moth在气温高的时候更活跃，他们有能力逃脱predators的prey
A其实是重复了题干In general, larger moths can fly faster than smaller ones 这句话的意思。演绎推理，应该找题干推出的结论，结论是个新的观点
还是觉得A挺对的呜呜
你想题干一直在说气温的事儿，A里面完全没提到这个，说的是一个普遍的情况，一般来说大moth就比小的飞的快，那放回文段，扯了半天气温的事儿跟这个普遍情况之间没关系了，这样是不对的登录 或 注册 后可以参加讨论