809. The proposed urban development zones do not represent a new principle; it was employed in “Operation Bootstrap” in Puerto Rico. (A) do not represent a new principle; it (B) represent not a new principle, but one that (C) are not a new principle; the same one (D) are not a new principle, but one that (E) are not new in principle; it 请问one 和 it的区别在哪里?
谢谢turtlechen,我又查了下上XDF时白勇的讲解: it指代不可数,单数名词和单数短语。 one单数名词短语的核心词 又如885-11-13.The nation’s three military academies have seen a dramatic rise in applications, one fueled by a resurgence of patriotism, increasing tuition costs at private colleges, and improved recruiting by the academies. (A) one fueled by a resurgence of patriotism, increasing tuition costs at private colleges, and improved recruiting by the academies (B) one fueled by a resurgence of patriotism, tuition costs that have increased at private colleges, and academies improving their recruiting (C) one fueled by a resurgence of patriotism, private colleges that increased their tuition costs, and recruiting improvements by the academies (D) fueled by a resurgence of patriotism, tuition costs increasing at private colleges, and academies improving their recruiting (E) fueled by a resurgence of patriotism, increasing tuition costs at private colleges, and academies improving their recruiting