For a trade embargo against a particular country to succeed, a high degree of both international accord and ability to prevent goods from entering or leaving that country must be sustained. A total blockade of Patria’s ports is necessary to an embargo, but such an action would be likely to cause international discord over the embargo. The claims above, if true, most strongly support which of the following conclusions? (D) Any trade embargo against Patria would be likely to fail at some time. (E) For a blockade of Patria’s ports to be successful, international opinion must be unanimous. 因果關係 embargo ==> international discord 題目說 For a embargo to succeed a high degree of both international accord and ability to prevent goods from entering or leaving that country must be sustained. E選項只是重複了上面這句話，並沒有support到因果關係。 仔細看題目會發現整個題目是有矛盾點的， 舉個例子， 為了小明要買到漫畫，那媽媽一定要給小明 100元， 但如果小明想要買漫畫，那媽媽就不會給小明 100元， 講白一點，小明就是不可能買到漫畫。 D選項就是講 小明不可能買到漫畫 --

※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 118.169.76.104