5. "_______ killed the cat" is a proverb used to warn of the dangers of unnecessary investigation or experimentation.
(A)Welfare
(B)Grief
(C)Curiosity
(D)Satisfaction
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統計: A(1), B(0), C(3), D(0), E(0) #3853815
統計: A(1), B(0), C(3), D(0), E(0) #3853815