Re: [請益] tpo15-a warm-blooded turtle

看板TOEFL_iBT (TOEFL_iBT托福)作者lumilumi (我是嚕嚕米！)時間14年前 (2011/09/14 22:29)推噓0(0推 0噓 1→)

留言1則, 1人參與討論串2/3 (看更多)

(1) 跟(2)最大的不同就是 (2)說there is a counter-current exchange system WITHIN the turtle's flipper 但這個system不是在flipper裡的，是在它身體裡 ※ 引述《sundream11 (10)》之銘言： : Paragraph 6:【 In a countercurrent exchange system , the blood vessels carrying : cooled blood from the flippers run close enough to the blood vessels carrying : warm blood from the body to pick up some heat from the warmer blood vessels; : thus, the heat is transferred from the outgoing to the ingoing vessels before : it reaches the flipper itself】. This is the same arrangement found in an : old-fashioned steam radiator, in which the coiled pipes pass heat back and : forth as water courses through them . The leatherback is certainly not the only : animal with such an arrangement; gulls have a countercurrent exchange in their : legs. That is why a gull can stand on an ice floe without freezing. : 8.Which of the sentences below best expresses the essential information in the : [ highlighted sentence ] in the passage? : 。In a turtle's countercurrent exchange system, outgoing vessels lie near : enough to ingoing ones that heat can be exchanged from the former to the latter : before reaching the turtle' s flippers. : 。Within the turtle' s flippers, there is a countercurrent exchange system that : allows colder blood vessels to absorb heat from nearby warmer blood vessels and : then return warmed blood to the turtle's body. : 我選的是第二個選項,但是答案是第一個,我搞不太懂這兩個選項的差異 : 請問如何推敲出答案是第一個呢??謝謝!!! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.45.48.116