同样的问题,看过了http://forum.chasedream.com/dispbbs.asp?boardid=23&replyid=2452605&id=264321&page=1&skin=0&Star=1 的讨论,还是不明白: PREP2-8, 8. (24773-!-item-!-188;#058&001691)
Ozone, a special form of oxygen that screens out harmful ultraviolet rays, reaches high concentrations twelve miles above Earth, whereit has long appeared that it was immune from human influence; we have now realized, though, that emissions of industrial chlorofluorocarbons deplete the ozone layer.
(A) has long appeared that it was immune from (B) has long appeared to have been immune from (C) has long appeared as being immune to (D) had long appeared immune to (E) had long appeared that it was immune to A,因为it has long appeared that中it 是形式主语,that 后面it was immune from中的It指代ozone,两个it指代不一致,所以错。 PREP1-102 102. (29983-!-item-!-188;#058&004080)
Recent breakthroughs in technology have made it possible that high-definition digital video cameras are able to capture material with a degree of fidelity that nearly compares to 35-millimeter film and to project it digitally in theaters with no resulting loss of image quality.
(A) it possible that high-definition digital video cameras are able to capture material with a degree of fidelity that nearly compares to (B) it possible to have high-definition digital video cameras that can capture material at a degree of fidelity almost like that with (C) it possible for high-definition digital video cameras to capture material with a degree of fidelity nearly comparable to that of (D) possible high-definition digital video cameras that can capture material at a degree of fidelity almost like (E) possible high-definition digital video cameras able to capture material with a degree of fidelity that nearly compares to that with C, it possible for high-d digital..,这里面it做形式主语,指代to capture..and to protect.. 但是没划线的部分,protect it digitally in theaters..,这里面的it 明显指代的是material. 这样的话怎么解释呢?两个题矛盾了! 求NN 解释更清楚些,谢谢! |