_____has always fascinated biologists.A、Fish are swimmingB、The fish can swimC、

游客2025-02-04 16

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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