[請益] 黃金閱讀 The Origins of Cetaceans
看板TOEFL_iBT (TOEFL_iBT托福)作者catwalk39 (says who)時間15年前 (2010/11/16 19:00)推噓2(2推 0噓 11→)留言13則, 4人參與討論串1/1
It should be obvious that cetaceans—whales, porpoises, and dolphins-are
mammals. They breathe through lungs, not through gills, and give birth to
live young. Their streamlined bodies, the absence of hind legs, and the
presence of a fluke(1) and blowhole(2) cannot disguise their affinities
with land dwelling mammals.
1. In paragraph 1, what does the author say about the presence of a
blowhole in cetaceans?
(1)It clearly indicates that cetaceans are mammals.
(2)It cannot conceal the fact that cetaceans are mammals.
(3)It is the main difference between cetaceans and land-dwelling mammals.
(4)It cannot yield clues about the origins of cetaceans.
答案是(2)
為什麼答案不是(3)呢? 原文中意思應該是即使cetaceans有blowhole，
但是cetaceans和land dwelling mammals還是有關係
cetaceans是mammals文章不是一開頭就已經講了嗎
謝謝大家!
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