[請益] tpo15-a warm-blooded turtle
看板TOEFL_iBT (TOEFL_iBT托福)作者sundream11 (10)時間14年前 (2011/09/14 21:47)推噓0(0推 0噓 0→)留言0則, 0人參與討論串1/3 (看更多)
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: 140.112.4.173
討論串 (同標題文章)
以下文章回應了本文：
完整討論串 (本文為第 1 之 3 篇)：
TOEFL_iBT 近期熱門文章
PTT職涯區 即時熱門文章
47
113
12
12
15
68