OG 和蓝书出现矛盾的一道题目

polkme · 发表于 2010-3-30 22:41:37

Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the Sun’s poles or equator.(A) are visible as dark spots on the surface of the Sun but have never been sighted on
(B) are visible as dark spots that never have been sighted on the surface of the Sun
(C) appear on the surface of the Sun as dark spots although never sighted at
(D) appear as dark spots on the surface of the Sun, although never having been sighted at
(E) appear as dark spots on the Sun’s surface, which have never been sighted on

蓝书答案是C，OG12TH 答案是A

分析蓝书选C的理由应该是at poles or equator,介词选at.
OG说althogh后面需要主语。
很想知道这道题目有没有个定论啊？究竟该以哪个为准？

vetch · 发表于 2010-3-31 22:38:33

你说小兰是verbal review 2nd？我咋没找到到这个题。我的小兰是09年出版的，verbal review 2nd。这样估计，og12比你手上的小兰版本更新。。应该信og。而且我觉得应该选a，although是个连词，后面应该跟独立句子吧，c，although后面缺主语。。。不知到这样理解是否正确。

OG 和蓝书出现矛盾的一道题目

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