[求助]大全840

大全840      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）

(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

OG110

1.        It has been estimated that the annual cost to the United States of illiteracy in lost industrial output and tax revenues is at least $20 billion a year.

(A) the annual cost to the United States of illiteracy in lost industrial output and tax revenues is at least $20 billion a year

(B) the annual cost of illiteracy to the United States is at least $20 billion a year because of lost industrial output and tax revenues

(C) illiteracy costs the United States at least $20 billion a year in lost industrial output and tax revenues

(D) $20 billion a year in lost industrial output and tax revenues is the annual cost to the United States of illiteracy（C）

(E) lost industrial output and tax revenues cost the United States at least $20 billion a year because of illiteracy

OG解释： A, D, and E are awkward and confused because other constructions intrude within the phrase cost... of illiteracy: for greatest clarity, cost should be followed immediately by a phrase (e.g., of illiteracy ) that identifies the nature of the cost

请问两者有什么区别？