42. What bodily action is linked to the chemical process discovered by the researchers?
(A) A “fight-or-flight” reaction.
(B) The process of getting older.
(C) The intense feeling of anger.
(D) An increase in heart rate.

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統計： A(498), B(44), C(43), D(20), E(0) #2298680

詳解 (共 2 筆)

#4104827
文中自有答案: Researchers...
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#3960742
(A) 「戰鬥或逃跑」反應。
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