11. Mammals have highly developed ears, consisting of varying lengths, and numbers of turns in the cochlea.
(A) sophisticated
(B) aged
(C) sensitized
(D) acoustic

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統計： A(29), B(7), C(9), D(3), E(0) #1098220

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#4396683
題目翻譯:哺乳類動物有高度發達的耳朵，他...
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