GWD-2-16

belindaxiaos

Q16:

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.

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

B. 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

C. 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

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

答案是E，不理解. since也可以用来表达因果关系吗

答案是E，不理解. since也可以用来表达因果关系吗

jessicafairy

Main Entry:

²since

Function:

conjunction

Date:

15th century

1: at a time in the past after or later than <has held two jobs since he graduated> : from the time in the past when <ever since I was a child>2obsolete : when3: in view of the fact that : because <since it was raining she took an umbrella>

www.m-w.com

Because of the comma there, you have to pick a full sentence instead of prepositional phrase. Either "because" or "since" is fine.