17.What is the purpose of the story in the opening of the passage?
(A) To arouse readers’ interest in breeding cobras.
(B) To highlight people’s response to breeding cobras.
(C) To explain the origin of the cobra effect.
(D) To argue against the cobra effect.
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統計: A(0), B(0), C(1), D(1), E(0) #3565499
統計: A(0), B(0), C(1), D(1), E(0) #3565499