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• 21.下列何者為「生產效率」的表現 (1)最大產出，(2)最低成本，(3)效用最大，(4)社會福利最大，(5)利潤最大 (A)12(B)123(C)45(D)345。
• 23.若某物的需要曲線是恆一彈性，則下列敘述何者正確?(A)此需要曲線為一負斜率的直線(B)價格下降時，消費者對該物的總支出會減少(C)無論該物銷售量如何變動，廠商對該物的總收益為固定(D)此需要曲線
• 2. The country has been ________ by drought ever since the river that ran along the borderwas cut of
• 3. The students, too ________ to stand against the bully, are cowering in a corner with fear.(A) men
• 5. Stephen Hawking is recognized for his ________ work on black holes and singularities. Histheory s