※ 引述《kira12109 (三つ葉)》之銘言：
: Dolphins lack vocal cords, nevertheless creating sounds: a complicated system
: of whistles, Squeaks, moans, trills, and clicks are produced by sphincter
: muscles inside the blowhole.
: A. nevertheless creating sounds: a complicated system of whistles, squeaks,
: moans, trills, and clicks are produced by
: B. nevertheless creating sounds: they produce a complicated system of
: whistles,squeaks, moans, trills, and clicks with
: C. but they do create sounds, producing a complicated system of whistles,
: squeaks, moans, trills, and clicks with
: D. but they do create sounds, a complicated system of whistles, squeaks,
: moans,trills, and clicks being produced
: E. but nevertheless creating sounds: a complicated system of whistles,
: squeaks,moans, trills, and clicks produced by
: 想請問D答案,"a complicated...."是當前方sounds的同位語或是they的同位語呢?
: 對於對於同位語的指代對象總是弄不太清楚...
: 麻煩各位了!!
當sounds的同位語。
通常句尾的同位語都是向前指代最接近的名詞。
再加上後面的whistles（哨聲）、moans（呻吟聲）、clicks（科科）都是屬於聲音
所以可以明確確定是在指代sounds而不是they（dolphins）
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