[SC. ] GWD 21-13
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
答案是C
請問B錯/不有效 在哪裡呢?
謝謝!
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