请教5题白勇题目

tina_aya

1． 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.
（C）By the end of the decade， the United States petroleum industry's cost of meeting environ mental 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 5tates petroleum industry of meeting environmental regulations will be ten percent of the price per barrel of refined petroleum.

answer:E.我选的是c因为我记得不是cost to 都是不选的吗,要选cost of所以我一看到d,e就删掉了,为什么要选e

2.In the late seventh century, in a dispute over whether the Prophet Muhammad's son-in-law, Ali, should carry on as the fourth caliph, Muhammad's successor, Islam split into two branches, the Sunnis and the Shiites.
(A) over whether the Prophet Muhammad's son-in-law, Ali, should carry on as the fourth caliph, Muhammad's successor
(C) over whether Ali, the Prophet Muhammad's son-in-law, was going to carry on and be the fourth caliph, Muhammad's successor

答案是a我选c因为同位语不是应该先难在简单吗所以应该先ali再the prophet muhammad’s son-in low

3. Alaska regularly deposits some of its profits from the sale of oil into a special fund, with the intention to sustain the state's economy after the exhaustion of its oil reserves.
(A) fund, with the intention to sustain the state's economy after the exhaustion of its oil reserves
(C) fund intended to sustain the state's economy after oil reserves are exhausted
answer:C why not a?

4. The proposed urban development zones do not represent a new principle; it was employed in "Operation Bootstrap" in Puerto Rico.
(A) do not represent a new principle; it
(B) represent not a new principle, but one that
(C) are not a new principle; the same one
(D) are not a new principle, but one that
(E) are not new in principle; it

answer:B  why?

5.

The lack of complete historical records from the mid-to-late 1800's have made some Black inventions difficult to trace to their originators.
(D) has made it difficult to trace some inventions to their Black originators
(E) has made it difficult in tracing some Black inventions to their originators

answer , i chose E,why?

问题有点多真是不好意思,资质较差,请各位大大帮帮忙吧 ,thanks

weiyu

1. Refer to OG14

14.     aleontologists believe that fragments of a primate jawbone unearthed in Burma and estimated at 40 to 44 million years old provide evidence of a crucial step along the evolutionary path that led to human beings.

(A) at 40 to 44 million years old provide evidence of

(B) as being 40 to 44 million years old provides evidence of

(C) that it is 40 to 44 million years old provides evidence of what was

(D) to be 40 to 44 million years old provide evidence of（D）

(E) as 40 to 44 million years old provides evidence of what was

D, the best choice, correctly follows estimated with to be. The other choices present structures that are not idiomatic when used in conjunction with estimated. Choices B, C, and E all mismatch the singular verb provides with its plural subject, fragments, and in choices C and E, what was is unnecessary and wordy. In choice C, the use of the verb phrase estimated that it is produces an ungrammatical sentence.

Predicted at/ estimated at is unidiomatic

2. shold indicates a condition, as also x carry on as y is idiomatic

3. with the intention of doing

4. Refer to OG199,231,149,8,19

Here "it" indicates the mentioned "a new priciple", it will be absurd to assume that a new priciple will be adpoted in past

5.

The lack of complete historical records from the mid-to-late 1800's have made some Black inventions difficult to trace to their originators.
(D) has made it difficult to trace some inventions to their Black originators
(E) has made it difficult in tracing some Black inventions to their originators

First "lack" might be lacks...have. Could you confirm at your earliest convenience?

it (is)+adj+ to do

difficulty in doing is an idiomatic expression

tina_aya

thanks weiyu mm