30. Why does the author invoke the analogy between music and chemistry？
(A)To highlight a formal parallel between two domains
(B)To establish a substantive identity between music and chemistry
(C)To argue that chemistry arose historically out of musical theory
(D)To suggest that combining elements physically produces harmonic tones

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統計： A(0), B(0), C(0), D(1), E(0) #3915281