[求助]GWD-31-Q30

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: 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.

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: 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.
                

answer:B  my:A

首先我觉得主语从句除了遇到主语过长的情况，B的that之后主语长度和原句一样，如果不是特别必要，GMAT的感觉应该是避免将简单句变成主语从句这种复杂句。

project at price by the end of 有按照预计达到的意思，project本身这个词就有将来的含义，不用再用将来时来与by the end of呼应

at price 中的at有表示达到一个数字的含义

estimate和project 是不是可以互换不好说，但是不改变原句的动词应该最好