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, where it 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
这道题a项固然有很多错,但解释中偏偏选了两个it的问题,说形式主语it和代词it有冲突。当然这个解释也是网上大牛义务劳动的,但毕竟小虾不敢挑战大牛,在这再跟大家确认一次,形式主语it和代词it没有冲突,对么?
附上前几天我拿另外两题和一位仁兄的讨论帖http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=391916&replyID=&skin=1
希望这次盖棺论定。
我是这么认为的,
上次讨论那一题,第一个it是很清晰的形式主语,无其他指代物,而第二个it是and平行结构中对重复宾语的指代.两个it的指代都非常清晰.
反观这题,第一个it有可能指代Ozone也有可能成为形式主语 (我认为实际上这个it就是指代ozone),这就造成了指代不清.
请大NN们指教~
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