177. So poorly educated and trained are many young recruits to the United States work force that many business executives fear this country will lose its economic preeminence.
(A) So poorly educated and trained are many young recruits to the United States work force that
(B) As poorly educated and trained as many young recruits to the United States work force are,
(C) Because of many young recruits to the United States work force who are so poorly educated and trained,
(D) That many young recruits to the United States work force are so poorly educated and trained is why
(E) Many young recruits to the United States work force who are so poorly educated and trained explains why
A, the best choice, uses the idiomatic form So X that Y to establish a cause/effect relationship between clauses X and Y. In B, the subject of the as ... as clause (young recruits) should be the subject of the main clause as well (e.g., they). Furthermore, main clauses following concessive clauses must express a contrasting notion: for example, "As ill-prepared as they are, they nevertheless find good jobs." C offers a wordy, convoluted because clause. In D, the sentence form X is why is unidiomatic (X is the reason why would be idiomatic but needlessly wordy and awkward). E exhibits subject-verb disagreement: young recruits ... explains why.
不是很明白A是如何倒装的，哪位NN能否告诉我这句的正常语序啊！ | 
