公務人員特種考試外交領事法學知識與英文（包括中華民國憲法、法學緒論、英文）104 年第 42 題單選題Darrin McMahon still cannot define happiness after spending six years researching and writing a book about it. While that has been a _____ , he said it is also what gives happiness its power and attraction.Afrustration正確答案BtreatCcomfortDpleasure 答案與詳解
