请教大全840、9，谢谢

bnbf

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.

(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.

答案是E。我选D。cost to the United States petroleum industry of meeting？

不是cost……to do 吗，怎么变成of doing 啦？

9 Even as they never forgave the Crusaders who overran their homeland, the Syrians have never absolved the French for taking territory from them.

(A) Even as they never forgave

(B) While they never forgave

选A，里面的even是什么用法？做什么部分？

前段时间总发不上去，在斑竹的指导下终于解了燃眉之急，感谢！