GMAT虚拟语气问题Developing nations in various parts of the world h

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GMAT虚拟语气问题
Developing nations in various parts of the world have amassed $700 billion in debts; at stake, should a significant number of these debts be repudiated, is the solvency of some of the world’s largest multinational banks.
(A) should a significant number of these debts be repudiated, is
(B) should a significant number of these debts be repudiated, are
(C) should they repudiate a significant number of these debts, are
(D) if there is a repudiation of a significant number of these debts, would be
(E) if a significant number of these debts will be repudiated, is
这里D.E为什么错了? 答案是A

分号后的全句调整为正装并补全省略的部分后是： if a significant number of these debts should be repudiated, the solvency of some of the world’s largest multinational banks is at stake. 先看容易排除的 E.应该是：if 从句用一般现在时,主句用一般将来时.所给答案是反的!即应该是：if a significant number of these debts ARE repudiated, WILL the solvency of the world's largest multinational banks BE. (注意 BE 的位置.不过这样的话,句子首先太松散；其次,也没提供此选项.)若是 if a significant number of these debts ARE repudiated, WILL BE the solvency of the world's largest multinational banks, 一是 BE 的位置不符合正式英语的行文习惯,二也没提供.E 排除.再看 D.在试图使用错综语气--一个真实,另一个虚拟.但至少有两个问题.首先,BE 的位置不对,排除 D.其次,从句应虚拟 (表“如若”,D 不符合,A符合),主句真实 (表“势必”,D 不符合,A 符合.)

讲解By correlating markings made in various parts of the world in some parts of the world. Things are ________________ in other parts of the world.(dif People eat diffrent things in( 1 )parts of the world. people eat different things in different parts of the world. in different parts of the world中文意思 in other parts of the world的意思 In __ parts of the world ,things are different. How many nations in the world In other parts of the world.跟In other places of the world.中的 with the developing/ development of the world... people in the developing world greatly