9. Which of the following brain structures serves as the biological clock?
(A) Pons
(B) Hippocampus
(C) Medulla oblongata
(D) Hypothalamus
(E) Pituitary gland
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統計: A(4), B(7), C(4), D(51), E(6) #3101670
統計: A(4), B(7), C(4), D(51), E(6) #3101670