两道天山逻辑

没查到以前的讨论，大家帮忙看看

Q25:

Scientists typically do their most creative work before the age of forty. It is commonly

thought that this happens because aging by itself brings about a loss of creative

capacity. However, a study has found that almost all scientists who produce highly

creative work beyond the age of forty entered their fields late and less than a dozen years

before their creative breakthroughs. Since creative breakthroughs by scientists under

forty also generally occur within a dozen years of the scientist’s entry into the field,

the study’s finding strongly suggests that the real reason why scientists over forty rarely

produce highly creative work is not due to age but rather because most have spent too

long in their fields.

In the argument given, the two portions in boldface play which of the following roles?

A. The first is the position that the argument as a whole defends; the second is

evidence that is advanced as part of that defense.

B. The first and second are both claims that have been advanced in support of a

position that the argument as a whole opposes.

C. The first is an explanation that the argument challenges; the second provides

evidence in support of a competing explanation that the argument defends.

D. The first is an explanation that the argument challenges; the second is evidence

that has been used against an alternative explanation that the argument defends.

E. The first is an explanation that the argument defends; the second is evidence that

has been used to challenge that explanation.

KEY:E

MY ANSWER: C 我怎么就看不出是defend, 明明是challenge么

Q28

Certain politicians in the country of Birangi argue that a 50 percent tax on new

automobiles would halt the rapid increase of automobiles on Birangi’s roads and thereby

slow the deterioration of Birangi’s air quality. Although most experts agree that such a

tax would result in fewer Birangians buying new vehicles and gradually reduce the

number of automobiles on Birangi’s roads, they contend that it would have little impact

on Birangi’s air-quality problem.

Which of the following, if true in Birangi, would most strongly support the experts’

contention about the effect of the proposed automobile tax on Birangi’s air-quality

problem?

A. Automobile emissions are the largest single source of air pollution.

B. Some of the proceeds from the new tax would go toward expanding the

nonpolluting commuter rail system.

C. Currently, the sales tax on new tax on new automobiles is considerably lower than

50 percent.

D. Automobiles become less fuel efficient and therefore contribute more to air

pollution as they age.

E. The scrapping of automobiles causes insignificant amounts of air pollution.

Answer:

key: D

MY ANSWER: E. 原文说“little impact”，D的话就会有"big impact"

my bad

I misunderstood "the scraping of", I thought it means the emission of cars, but actually it means "cars dumped to junk yard"