大全-13-16. 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?
(A) The balance of opinion is likely to favor Patria in the event of a blockade.
(B) As long as international opinion is unanimously against Patria, a trade embargo is likely to succeed.
(C) A naval blockade of Patria’s ports would ensure that no goods enter or leave Patria.
(D) Any trade embargo against Patria would be likely to fail at some time.（D）
(E) For a blockade of Patria’s ports to be successful, international opinion must be unanimous.
如果D改为Any trade embargo against Patria would be likely to fail，肯定选它了。但是为什么要加at some time来限制？有时选项中出现“有时”、“一段时间”、“部分”就要排除的。
