OG12-1 关于since的未解问题

MarilynR

OG12-1


The Glass House Mountains in Queensland, Australia, were sighted in 1770 by the English navigator Captain James Cook, [by whom they were named supposedly because its] sheer we rocks glistened like glass.

A. by whom they were named supposedly because its
B. by whom they were named supposedly and their
C. naming them supposedly since their
D. who so named them supposedly because their
E. who so named it since supposedly their

D为正解，og在C的解释中有这么句话：”since”loses the important causal logic of the sentence

请问在gmat中since不能表达原因，解释因果关系吗？

MarilynR

恩的，很详细，有点明白了，我再仔细研读下，谢谢谢～～～～～

MarilynR

不算连用吧，so在这里表示这样，这么的意思，不是表所以

指不能连用是Because 与SO 表示因为，所以时不能联用，就像although 与but不连用

in that在哪？