请教OG的解释?OG-3,OG-4

hellen-wen

OG3

The average life expectancy for the United States population as a whole is 73.9 years, but chidren born in Hawaii will live an average of 77 years,and those born in Louisiana, 71.7 years. If a newlywed couple from Louisiana were to begin their family in Hawaii, therefore, theur children would be expected to live longer than would be the case if the family remained in Louisiana.

which of the following stataments, if true would most significantly strengthen the conclusion drawn in the passage?

A) As population density increases in Hawaii, life expectancy figures for that state are likyly to be revised downward.

B) Evironment factors tending to favor longevity are abundant in Hawaii and less numerous in Louisiana.

C) Twenty-five percent of all Louisianians who move to Hawaii live longer than 77 years.

D) Over the last decade, average life expectancy fas risen at a higner rate for Lousianians than for Hawaiians.

E) Studies show that the average life expectancy for Hawaiians who move permanently to Louisiana is roughly equal to that of Hawaiians who remain in Hawaii.

对答案B毫无疑问, 我是想问问OG对D和E的解释.

"choice D is irrelecant, because the information it mentions about rates would already have been incorporated into the statistics cited in the passage" 这是什么意思啊?

choice E, in the absence of other relevant information, has no bearing on the conclusion,

但我认为这个选项像是削弱.

4. Insurance Company X is considering issuing a new policy to cover services required by elderly people who suffer from diseases that afflict the elderly. Premiums for the policy must be low enough to attract customers. Therefore, Company X is concerned that the income from the policies would not be sufficient to pay for the claims that would be made.
Which of the following strategies would be most likely to minimize Company X’s losses on the policies?
A. Attracting middle-aged customers unlikely to submit claims for benefits for many years.
B. Insuring only those individuals who did not suffer any serious diseases as children
C. Including a greater number of services in the policy than are included in other policies of
lower cost
D. Insuring only those individuals who were rejected by other companies for similar policies
E. Insuring only those individuals who are wealthy enough to pay for the medical services

对于选项E的解释我有些不明白.
"Because policyhwill file claims against the policy for services covered rather than pay for the cost of the services themselves, E is irrelevant." 这是什么意思啊?

arundhati

2. D项为无关选项，OG的意思是说既然题目让加强，就要用一些辅助条件加强，而D的关于rate的信息已经可能隐含在题干中了。

我不认为E是在削弱，因为H市和L市迁移的人口和人均寿命并没有过大关系。属于无关选项。

4. OG的解释意思是：保险客户只会提出反对保险服务政策的要求，而不是自己承担这项服务的花费。大概意思就是其实是保险公司自己承担服务花费，保险客户只是按要求定期交纳一定得存款，这个你wealthy与否没多大关系。这个意思或许有些绕，不过我们按常理来想想那些保险公司，他们关心的并不是客户能否付得起保险费，而是客户持该保险分额是否能足够长得让他们获得利润。