求教一道大全逻辑题

bobo1990 · 发表于 2010-9-14 10:41:32

A report on acid rain concluded, “Most forests in Canada are not being damaged by acid rain.” Critics of the report insist the conclusion be changed to, “Most forests in Canada
do not show visible symptoms of damage by acid rain, such as abnormal loss of leaves, slower rates of growth, or higher mortality.”Which of the following, if true, provides the best logical justification for the critics’ insistence that the report’s conclusion be changed?
(A) Some forests in Canada are being damaged by acid rain.
(B) Acid rain could be causing damage for which symptoms have not yet become visible.
(C) The report does not compare acid rain damage to Canadian forests with acid rain damage to forests in other countries.
(D) All forests in Canada have received acid rain during the past fifteen years.
（B）(E) The severity of damage by acid rain differs from forest to forest.
求解释啊~

Division manager: I want to replace the Microton computers in my division with Vitech computers.
General manager: Why?
Division manager: It costs 28 percent less to train new staff on the Vitech.
General manager: But that is not a good enough reason. We can simply hire only people who already know how to use the Microton computer.
Which of the following, if true, most seriously undermines the general manager’s objection to the replacement of Microton computers with Vitechs?
(A) Currently all employees in the company are required to attend workshops on how to use Microton computers in new applications.
(B) Once employees learn how to use a computer, they tend to change employers more readily than before.
(C) Experienced users of Microton computers command much higher salaries than do prospective employees who have no experience in the use of computers.
(D) The average productivity of employees in the general manager’s company is below the average productivity of the employees of its competitors.（C）
(E) The high costs of replacement parts make Vitech computers more expensive to maintain than Microton computers.
我觉得这题的A比C更strongly呀

jianglindenise · 发表于 2011-3-23 09:45:21

同求解....后面一题~~~我也选的A

sdfzcjy · 发表于 2011-3-23 13:39:27

A report on acid rain concluded, “Most forests in Canadaare not being damaged by acid rain.” Critics of the report insist the conclusion be changed to, “Most forests in Canada
do not show visible symptoms of damage by acid rain, such as abnormal loss of leaves, slower rates of growth, or higher mortality.”Which of the following, if true, provides the best logical justification for the critics’ insistence that the report’s conclusion be changed?
(A) Some forests in Canada are being damaged by acid rain.
(B) Acid rain could be causing damage for which symptoms have not yet become visible.
(C) The report does not compare acid rain damage to Canadian forests with acid rain damage to forests in other countries.
(D) All forests in Canada have received acid rain during the past fifteen years.
(E) The severity of damage by acid rain differs from forest to forest.

-- by 会员 bobo1990 (2010/9/14 10:41:32)

文章说的是加拿大的热带雨林有没有没酸雨破坏的问题，有没有看得见的破坏的问题，还有具体有哪些被破坏症状的问题，原文结论是，酸雨没有导致破坏，因为没有看得见的破坏症状
问驳斥

(A) Some forests in Canada are being damaged by acid rain.某些加拿大热带雨林正在被破坏，其他的呢？貌似有点关系，放着
(B) Acid rain could be causing damage for which symptoms have not yet become visible.
酸雨引起破坏，症状看不见，放着
(C) The report does not compare acid rain damage to Canadian forests with acid rain damage to forests in other countries.
report没有比较酸雨破坏对加拿大的和其他国家的，比较对象原文没有提到，干掉
(D) All forests in Canada have received acid rain during the past fifteen years.
所有雨林在加拿大都有酸雨在过去的15年，过去有没有问题，原文没提，干掉
(E) The severity of damage by acid rain differs from forest to forest.
酸雨破坏的严重性不同于不同雨林，不同雨林酸雨造成破坏严重性问题，文章没提，干掉

剩下AB，感觉B更像正确答案，A的some貌似不太好，觉得B犯错机会更小，选B，哈哈

boozy · 发表于 2011-3-23 15:38:53

如果A正确，那么表明大家知道部分森林正在被酸雨破坏，反对者就不会坚持“没有表现出破坏”这样的观点，报告的结论就会彻底改变。

求教一道大全逻辑题

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