gwd 12-32,key is E,BUT D is more perfect?

tanwt

Q32:

Prospecting for gold during the California gold rush was a relatively easy task, because of erosion, prehistoric glacier movement, and ancient, gold-bearing riverbeds thrust to the surface by volcanic activity put gold literally within reach for anybody with a pan or shovel.

because of erosion, prehistoric glacier movement, and ancient, gold-bearing riverbeds thrust to the surface by volcanic activity put gold literally within reach for

because of erosion, prehistoric glacier movement, and volcanic activity that thrust ancient, gold-bearing riverbeds to the surface, and putting gold literally within reach of

owing to erosion, prehistoric glacier movement, and volcanic activity that had thrust ancient, gold-bearing riverbeds to the surface, and putting gold literally within reach of

since erosion, prehistoric glacier movement, and volcanic activity that thrust ancient, gold-bearing riverbeds to the surface, putting gold literally within reach for

since erosion, prehistoric glacier movement, and ancient, gold-bearing riverbeds thrust to the surface by volcanic activity put gold literally within reach of

carolwting

I think so as well. Anyone can help explain it? Tks!

这题的选项没有正确的。我选择的是D，虽然我也认为Since做“因为”的时候是连词，但是相对于E我还是觉得D好。E在句意上有矛盾，如果是E的话，句意就成了“因为erosion, prehistoric glacier movement, and ancient, gold-bearing riverbeds 被火山活动推到地表...”这显然不对。但如果把三者看成并列，since后需要接完整句子的原则又被打破。

确实头疼~~~