一道语法 GWD的。。

小c考托福

GWD-12-Q32:
Prospectingfor gold during the California gold rush was a relatively easy task, becauseof erosion, prehistoric glacier movement, and ancient, gold-bearing riverbedsthrust to the surface by volcanic activity put gold literally within reach foranybody with a pan or shovel.

A.   because of erosion, prehistoricglacier movement, and ancient, gold-bearing riverbeds thrust to the surface byvolcanic activity put gold literally withinreach for            
B.   because of erosion, prehistoricglacier movement, and volcanic activity that thrust ancient, gold-bearingriverbeds to the surface, and putting goldliterally within reach of          
C.   owing to erosion, prehistoric glaciermovement, and volcanic activity that had thrust ancient, gold-bearing riverbedsto 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 thesurface, putting gold literally within reach for
E.    since erosion, prehistoric glaciermovement, and ancient, gold-bearing riverbeds thrust to the surface by volcanicactivity put gold literally withinreach of


答案选E

jiaoguitar

答案是什么？E？

miss绿光

http://www.manhattangmat.com/forums/prospecting-for-gold-during-the-california-gold-rush-t6025.html国外论坛的解释,我把对四个选项的解释copy过来(还有其他的部分,你愿意可以去看):
(a)
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.

this is "because OF + CLAUSE".
prep + CLAUSE is not a valid sentence structure.

(b)
Prospecting for gold during the California gold rush was a relatively easy task, 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 anybody with a pan or shovel.

there's nothing parallel to the boldface construction; "and" requires that there be some parallel construction earlier in the sentence.

(c)
Prospecting for gold during the California gold rush was a relatively easy task, owing to erosion, prehistoric glacier movement, and volcanic activity that had thrust ancient, gold-bearing riverbeds to the surface, and putting goldliterally within reach of anybody with a pan or shovel.

same problem as in (b).

also, "owing to" is sketchy and informal -- i wouldn't use that in a formal sentence, unless i were actually writing about someone literally owingsomething (like money) to someone else.

(d)
Prospecting for gold during the California gold rush was a relatively easy task, since erosion, prehistoric glacier movement, and volcanic activity that thrust ancient, gold-bearing riverbeds to the surface, putting gold literally within reach for anybody with a pan or shovel.

"since" is a subordinating conjunction, so the words after “since” should constitute a sentence by themselves.
in this example, those words are NOT a complete clause; they're just a noun (X, Y, and Z), followed by two modifiers (the "that" modifier and the "comma + ing" modifier).

jeffisid

miss绿光 发表于 2012-8-15 21:39
http://www.manhattangmat.com/forums/prospecting-for-gold-during-the-california-gold-rush-t6025.html ...

赞爆了，目测是这题全网最靠谱的解答。