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心静

(Unlike most warbler species, the male and female
   blue-winged warbler are very difficult to tell apart.)

  (A) Unlike most warbler species, the male and
      female blue-winged warbler are very difficult
      to tell apart.
  (B) Unlike most warbler species, the gender of the
      blue-winged warbler is very difficult to
      distinguish.
   (C) Unlike those in most warbler species, the male
       and female blue-winged warblers are very
       difficult to distinguish.
  (D) It is very difficult, unlike in most warbler species,
      to tell the male and female blue-winged warbler
      apart.
  (E) Blue-winged warblers are unlike most species of
      warbler in that it is very difficult to tell the
      male and female apart.

这是我看到的一题，但没给出准确答案，有人说选A，有人说选E，我觉得E好，帮忙看看。

jacy

答案选e.
A的逻辑主语还是不好.

joywzy

agree with jacy.

huanghuiqun

e