请教一道语法题

yunnan1990

According to a recent study of consumer spending on prescription medications, increases in the sales of the 50 drugs that were advertised most heavily accounts for almost half of the $20.8 billion increase in drug spending last year, the remainder of which came from sales of the 9,850 prescription medicines that companies did not advertise or advertised very little.

 

A.    heavily accounts for almost half of the $20.8 billion increase in drug spending last year, the remainder of which came

B.    heavily were what accounted for almost half of the $20.8 billion increase in drug spending last year; the remainder of the increase coming

C.    heavily accounted for almost half of the $20.8 billion increase in drug spending last year, the remainder of the increase coming

D.    heavily, accounting for almost half of the $20.8 billion increase in drug spending last year, while the remainder of the increase came

E.     heavily, which accounted for almost half of the $20.8 billion increase in drug spending last year, with the remainder of it coming

我知道A的which指代存在歧义，可是C中the remainder of the increase coming ...根本不是一句话呀，很奇怪，我觉得应该吧coming改成came，然后在前面加上一个连词。如果C对，这是什么语法现象呀？

yunnan1990

补充一下，我错选了A，答案是C

lemuren

独立主格吧

yunnan1990

以下是引用lemuren在2009/8/30 14:30:00的发言：

独立主格吧

对呀，谢谢，我怎么没有想到呢，真是晕！惭愧一下！

AnttiZhang

ls正解。。。China exports 100,000 ton 0f ores, half of ores going to USA

zhongtiangg

haha,加油