947-补充-47

iselibra

The United States petroleum industry’s cost to meet environmental regulations is projected at ten percent of the price per barrel of refined petroleum by the end of the decade.
(A) The United States petroleum industry’s cost to meet environmental regulations is projected at ten percent of the price per barrel of refined petroleum by the end of the decade.
(B) The United States petroleum industry’s cost by the end of the decade to meet environmental regulations is estimated at ten percent of the price per barrel of refined petroleum.
(C) By the end of the decade, the United States petroleum industry’s cost of meeting environmental regulations is projected at ten percent of the price per barrel of refined petroleum.
(D) To meet environmental regulations, the cost to the United States petroleum industry is estimated at ten percent of the price per barrel of refined petroleum by the end of the decade.
(E) It is estimated that by the end of the decade the cost to the United States petroleum industry of meeting environmental regulations will be ten percent of the price per barrel of refined petroleum.
这里为什么一定要换成it is estimated这样罗嗦的结构？B有什么问题么？
是否不定式在句首，逻辑主语也需要时是句子的主语？

chipmunk

B is awkward because "to meet environmental regulations" modify "cost", but is separated by "by the end of the decade". Those two parts should stay together.

iselibra

请教chipmunk，那么D中是否也是同样的情况
To meet environmental regulations变成了修饰the cost？