OG12 D选项求解

万字

直接把D选项换到原句中了。
The widely accepted big bang theory holds the beginning of the universe to have been an explosive instant ten to twenty billion years ago that is expanding ever since.
关于D选项OG的解释
D     The beginning of the universe to have been ... is unnecessarily indirect and wordy; illogically suggests that beginning is expanding, not the universe.
hold后面没有that，表明hold后面接的不是一个完整的句子么？to have been an explosive instant 是beginning的后置定语么？根据就近原则，that is expanding为什么修饰的不是最近的名词instant呢？

夏威夷季风

其他选项没有，很难解释啊

万字

Rising inventories, when unaccompanied correspondingly by increases in sales, can lead to production cutbacks that would hamper economic growth.
(A) when unaccompanied correspondingly by increases in sales, can lead
(B) when not accompanied by corresponding increases in sales, possibly leads
(C) when they were unaccompanied by corresponding sales increases, can lead
(D) if not accompanied by correspondingly increased sales, possibly leads
(E) if not accompanied by corresponding increases in sales, can lead
OG的解释
A     Unaccompanied correspondingly is awkward and ambiguous.
B Plural subject inventories does not agree with the singular verb leads.
C Wrong tense: past tense were indicates a completed event, but can lead indicates a possibility that continues.
D    Correspondingly increased sales is awkward and unclear; verb (leads) does not agree with
the subject (inventories).
E    Correct. Not accompanied emphasizes the negative and is preferable to unaccompanied in this usage; corresponding modifies increases in sales; the modifier is clear and comprehensible, and there is no subject-verb agreement problem.