D. since erosion, prehistoric glacier movement, and volcanic activity that thrust ancient, gold-bearing riverbeds to the surface, putting gold literally within reach for
E. since erosion, prehistoric glacier movement, and ancient, gold-bearing riverbeds thrust to the surface by volcanic activity put gold literally within reach of
各位大大,本題我選到最後剩下DE,抉擇點在putting與put選不出來,
我當時的想法是,若since當preposition想,D似乎也可以,
但是根據句意,since要當因果關係解,所以只能當conjunction看,這樣正確嗎?
還是D,就算since當作preposition,也是錯?
請各位大大解惑!!!