30. GWD-31-Q30The United States petroleum industry’scost to meet environmental regulations is projected at ten percent of the priceper barrel of refined petroleum by the end of the decade
A. The United States petroleum industry’s cost to meetenvironmental regulations is projected at ten percent of the price per barrelof refined petroleum by the end of the decade.
B. It is estimated that by the end of the decade thecost to the United Statespetroleum industry of meeting environmental regulations will be ten percent ofthe price per barrel of refined petroleum.
C. By the end of the decade, the United States petroleum industry’scost of meeting environmental regulations is projected at ten percent of theprice per barrel of refined petroleum.
D. To meet environmental regulations, the cost to the United Statespetroleum industry is estimated at ten percent of the price per barrel ofrefined petroleum by the end of the decade.
E. The United States petroleum industry’s cost by the endof the decade to meet environmental regulations is estimated at ten percent ofthe price per barrel of refined petroleum.
答案是B,我选的C,不理解C哪错了,求指点,谢谢!
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