2. 外语
  3. _____has always fascinated biologists.

_____has always fascinated biologists.

admin2019-07-01  86
问题 _____has always fascinated biologists.
选项 A、Fish are swimming
B、The fish can swim
C、How fish swim
D、Could fish swim
答案C
解析 The sentence needs noun structure as its subject. How fish swim is a noun clause.
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