89. The argument in the passage relies on which of the following assumptions?
(A) Sandactylus would not have had networks of blood vessels in the skin of its wings if these networks were of no use to Sandactylus.
(B) All creatures that fly by flapping their wings have networks of blood vessels in the skin of their wings.
(C) Winged dinosaurs that flapped their wings
t ,, in flight would have been able to fly more effectively than winged dinosaurs that could only glide.
(D) If Sandactylus flew by flapping its wings, then paleontologists would certainly be able to find some evidence that it did so.
(E) Heat generated by Sandactylus in flapping its wings in flight could not have been dispersed by anything other than the blood vessels in its wings.
对E 的疑问, 是不是应为E 首先就先肯定了结论,(用翅膀飞)所以是错的,还是因为别的原因? 请赐教?
mbz
THANK YOU ！
可是楼上的GG，对于E选项还是不懂啊。
可不可以再解释一下！
拜托！
ding
对这道题的正确答案及解释我都没什么问题，主要是对OG对于B的解释不明白：This statement is too broad to be assumed; the comparison between bats and Sandactylus cannot be extended to all flying creatures. 看前人的总结，B选项错误是因为会扇翅飞的有network，但有network的不一定能扇翅飞，那OG的解释又是咋回事？完全不明白OG的逻辑。。。
请大家指教
OG从另外一方面来来判断，全文都关注于蝙蝠和S大鸟的共同点，从蝙蝠推到S大鸟的飞行。说前提是所有的扑腾翅膀的都是有这样的共同点。确实是大了一点。因为一下从最小的比较用到最大范围的前提，对于OG来说范围是一个很敏感的问题。但是我们都喜欢从细节入手。
对B取非：有一部分扑腾翅膀的动物没有这样的networking（一部分有，一部分没有），这既不加强也不削弱。因为S大鸟是不是属于扑腾翅膀的动物还没定论。
这样的随意扩大范围导致的结果往往就是结论既不加强也不削弱。
3x
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