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(A) Unfulfilled desires are a major source of unhappiness.
(B) It is certainly not as significant as having good friends.
(C) Money just does not buy as much happiness as it used to.
(D) The survey indicates happiness can flourish in various cultures.
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統計: A(17), B(80), C(53), D(10), E(0) #875566
統計: A(17), B(80), C(53), D(10), E(0) #875566