[SC. ]PP2#23
Scientists believe that unlike the males of most species of moth, the male
whistling moths of Nambung, Australia, call female moths to them "by the use
of acoustical signals, but not olfactory ones, and they attract" their
mates during the day, rather than at night.
A)by the use of acoustical signals, but not olfactory ones, and they attract
B)by the use of acoustical signals instead of using olfactory ones, and
attracting
C)by using acoustical signals, not using olfactory ones, and by attracting
D)using acoustical signals, rather than olfactory ones, and attract
E)using acoustical signals, but not olfactory ones, and attracting
答案是d,但我想問using acoustical signals是分詞代替連接詞當做闡述前面動作,但
using前不用逗號嗎？？？
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