Scientists believe that unlike the males of most species of moth, the male whistling moths of Numbing, 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
谢谢了亲~
但我还是有点疑问：
你的意思是说using在这里是作状语，那如果在using前面加逗号句子还是正确的吗？
就想这个句子一样：A one-million-year-old skull has been found in the Afar region of Eritrea,
indicating
modern humans developed much earlier than previously thought作者: taotao35 时间: 2012-5-4 06:35
