[問題]OG(11th) Q 89

[kaori110]

87-89
Networks of blood vessels in bat's wings serve only to disperse heat generated in flight. This heat is generated only because bats flap their wings. Thus paleontogists' recent discovery that the winged dinosaur Sandactylus had similar networks of blood vessels in the skin of its wings provides evidence for the hypothesis that Sandactylus flew by flapping its wings, not just by gliding.

89. The argument in the passage relies on which if 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 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.

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答案(A)
我想請問(E)選項
為什麼不能當assumption

[jungtsu]

我之前也選E
後來想過以後的想法是這樣
大家討論看看

整個推論是說因為 BAT 的 networks of blood vessels in the skin of its wings 只有一個用途 -- disperse heat，且這個heat只在flapping產生，所以有相似network的Sandactylus也用flapping的。但如果Sandactylus擁有這個Network是沒有用的，這個推論就不成立，所以A 是題目的假設。

E 選項說Heat不能被除了Network以外的東西驅散，只是加強了之前說的
"This heat is generated only because bats flap their wings"，不能作為前提。

[enshare]

我想問為什麼（D）不行？

我的想法是：（D）說如果Sandactylus flew by flapping its wings，古生物學家一定可以發現證明Sandactylus flew by flapping its wings的證據。

當古生物學家發現Sandactylus有類似蝙蝠的的network構造，而此network在蝙蝠身上的唯一功用就是disperse在flapping中產生的heat→Sandactylus的network也是同樣功能→Sandactylus flew by flapping its wings

Sandactylus的network構造就是證據

這樣為什麼不對呢？

[dibert8]

(D) S 會飛,它的血管網路可能是,可能不是用來散熱(隨便猜,也許它流汗...);所以不是非要血管網路不可.
(E) 取非,有沒有血管網路就不重要了,所以不能否定推論.
(A) 取非, P 就喪失推論的依據.

[little8]

抱歉,我還是對(E)有問題
(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.
我的理解是說: 假設在S體內沒有除了這個血管外具有散熱的功能?
因此,對照結論說:這個blood vessels system就是散熱,可以讓結論成立阿~~

不知道我的理解是否有誤?也請大大幫忙解惑啦!!!!乾溫~~~

[小花]

看您寫的 E好像是支持選項


題目問的是assumption
(不知道有沒有誤解你的意思)

[little8]

喔~~~~我大概了解意思了,我想我把supprt和assumption搞混了~~~
E只能說是一個加強結論的原因,比較像support

謝謝小花嚕~

[wingff]

都沒有人問(B)這個選項嗎?
我覺得(B)也很適合當成前提呀!

[所有會拍打翅膀的生物，翅膀上都有血管系統]
11111111111111111111+ 11111111111111111111111111=> 孔龍翅膀也有血管，表示恐龍不只是滑翔，還會揮舞翅膀
蝙蝠翅膀上的血管是為了散掉揮舞翅膀的熱量

我還是不懂OG上說該選項"做為一個前提太廣泛"的原因，所有生物的共通性不是正好可以推出各別生物的特性嗎?>"<

麻煩高手解惑，謝謝!!!!

[wolftin[origen]]

B=>

1.
AT考試很注重是否『過度聯想』
他講恐龍，用恐龍以外的東西回答，大概都不會正確

2.舉例
所有會飛的生物都有翅膀 => 公雞也有翅膀 ==???==> 公雞也會飛?!

[訪客]

速解87-89
Networks of blood vessels in bat's wings serve only to disperse heat generated in flight. This heat is generated only because bats flap their wings. Thus paleontogists' recent discovery that the winged dinosaur Sandactylus had similar networks of blood vessels in the skin of its wings provides evidence for the hypothesis that Sandactylus flew by flapping its wings, not just by gliding.

89. The argument in the passage relies on which if 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 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.


step1 選主幹部分帶否定的選項==>A,E
step2 other 不選;得A