問題詳情

42. Vhere do air-breathing insects carry out gas exchange?
(A) in specialized external gills.
(B) in specialized internal gills.
(C) in the alveoli of their lungs.
(D) across the membranes of cells.
(E) across the thin cuticular exoskeleton.

參考答案

答案:D
難度:非常困難0
統計:A(3),B(2),C(1),D(0),E(1)

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