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一道让我faint的题目

lilyba(Sunshine)
本文发表在 rolia.net 枫下论坛Neuroscientists are making progress in discovering more about the cause of Alzheimer’s disease. Alzheimer’s disease patients suffer from dementia and sever memory loss. Autopsies performed on such patients have revealed the presence of brain lesions caused by abnormal protein deposits. Similar deposits are also found in the brains of elderly patients who do not suffer from Alzheimer’s disease.

It follows that everyone who lives long enough will eventually develop Alzheimer’s disease.
Which one of the following statements, if true, most seriously undermines the conclusion that everyone who lives long enough will eventually develop Alzheimer’s disease?

1 The lesions found in the brains of non-Alzheimer’s disease patients are far less extensive than those found in the brains of Alzheimer’s disease patients.

2 The developing brain produces a greater number of cells than it will ever use. The extra cells are later destroyed by what biologists call “programmed cell death.”

3 The procedure that allows scientists to discover the presence of protein deposits during an autopsy is not yet refined enough to ensure detection of the lesions in all patients.

4 Autopsies have shown that some people lack the chemical necessary for protein deposits to cause brain lesions.

5 Though most Alzheimer’s disease patients develop the disease when they are in their late fifties to early seventies, the frequency of patients who develop the disease in their forties is on the rise.更多精彩文章及讨论，请光临枫下论坛 rolia.net
(#957033@0)
Last Updated: 2003-1-5
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Replies, comments and Discussions:

  • 工作学习 / English / a Gmat question. Please give a hand. -lilyba(Sunshine); 2003-1-5 {900} (#956996@0)
    Investigators concluded that human failure was not responsible for the fatal airplane crash last August, and since that time new and more stringent rules for identifying and reporting mechanical problems have been in effect. That accounts for the fact that reports of airplane mechanical problems have increased in frequency by 50 percent since last August.

    Which one of the following is an assumption underlying the argument in the passage?

    1 Airplane travel is still relatively safe, despite the increase in reported mechanical problems.

    2Mechanical problems in airplanes have increased dramatically since last August.

    3Mechanical problems in airplanes have not increased by 50 percent since last August.

    4Airlines are less reluctant to report mechanical problems than they previously were.

    5Mechanical problems in airplanes have become easier to detect since last August.
    • another GMAT question. -lilyba(Sunshine); 2003-1-5 {951} (#956998@0)
      Either Perry’s faction or Tucker’s faction, but not both, will win control of the government. If Perry’s faction wins, the nation will suffer economically. If Tucker’s faction wins, the nation will suffer militarily.

      Given the statements in the passage, which one of the following statements must be true?

      1 It is possible, but not certain, that the nation will neither suffer economically nor suffer militarily.

      2 If the nation suffers economically, it is certain that Perry’s faction has won control of the government.

      3 It is certain that the nation will suffer either economically or militarily, and also certain that it will not suffer both.

      4 If the nation suffers militarily, it is possible, but not certain, that Tucker’s faction has won control of the government.

      5 If the nation suffers both economically and militarily, it is certain that neither Perry’s faction nor Tucker’s has won control of the government.
      • 4? -jeffrey815(Smartiecat); 2003-1-5 (#957013@0)
      • why, I feel 2 is correct too. salute. -lilyba(Sunshine); 2003-1-5 (#957015@0)
        • Am I right though? -jeffrey815(Smartiecat); 2003-1-5 (#957016@0)
          • 100% correct. -lilyba(Sunshine); 2003-1-5 (#957019@0)
            • In my impression, you are pretty good at math. This is kinda like logic. It didn't say that if Perry wins, the nation will NOT suffer militarily. It didn't say that if Tucker win, the nation will NOT suffer economically. -jeffrey815(Smartiecat); 2003-1-5 {96} (#957021@0)
              So you can't say if the nation suffers economically, it is CERTAIN that Perry's factions wins.
              • 谢谢，明白了。逻辑问题，绕不过来。 -lilyba(Sunshine); 2003-1-5 (#957031@0)
    • 3? -jeffrey815(Smartiecat); 2003-1-5 (#957012@0)
    • 嗬嗬，你好牛啊。我看不懂，解释一下吧。 -lilyba(Sunshine); 2003-1-5 (#957017@0)
      • am i right? -jeffrey815(Smartiecat); 2003-1-5 (#957018@0)
        • yes, what do you study in university? -lilyba(Sunshine); 2003-1-5 (#957020@0)
          • 精算啰。 -jeffrey815(Smartiecat); 2003-1-5 (#957023@0)
      • Well, for this one, the key is the reporting of the problems increase 50% due to higher standards but the number of problems actually happening didn't increase at all. -jeffrey815(Smartiecat); 2003-1-5 (#957024@0)
        • I see. -lilyba(Sunshine); 2003-1-5 (#957026@0)
      • 我试一试。。。 -heian(黑暗㊣电池工作3小时); 2003-1-5 {407} (#957029@0)
        文章中心应该是：new and more stringent rules for identifying and reporting mechanical problems have been in effect.

        1，4，5段落里面没有涉及

        段落里面的mechanical problems have increased in frequency by 50 percent 是因为应用new and more stringent rules后出现的，和飞机本身没有关系。mechanical problems是客观存在的，主观衡量方式的改变导致report的增加。。。

        现在的高考英文阅读和这个应该差不多吧。。。？
        • 你有没有搞错啊。：（。不过明白了，绕弯弯。 -lilyba(Sunshine); 2003-1-5 (#957030@0)
    • 3 -heian(黑暗㊣电池工作3小时); 2003-1-5 (#957025@0)
      • thanks, i see. hehe, logic is always difficult for me. -lilyba(Sunshine); 2003-1-5 (#957028@0)
    • 一道让我faint的题目 -lilyba(Sunshine); 2003-1-5 {1511} (#957033@0)
      本文发表在 rolia.net 枫下论坛Neuroscientists are making progress in discovering more about the cause of Alzheimer’s disease. Alzheimer’s disease patients suffer from dementia and sever memory loss. Autopsies performed on such patients have revealed the presence of brain lesions caused by abnormal protein deposits. Similar deposits are also found in the brains of elderly patients who do not suffer from Alzheimer’s disease.

      It follows that everyone who lives long enough will eventually develop Alzheimer’s disease.
      Which one of the following statements, if true, most seriously undermines the conclusion that everyone who lives long enough will eventually develop Alzheimer’s disease?

      1 The lesions found in the brains of non-Alzheimer’s disease patients are far less extensive than those found in the brains of Alzheimer’s disease patients.

      2 The developing brain produces a greater number of cells than it will ever use. The extra cells are later destroyed by what biologists call “programmed cell death.”

      3 The procedure that allows scientists to discover the presence of protein deposits during an autopsy is not yet refined enough to ensure detection of the lesions in all patients.

      4 Autopsies have shown that some people lack the chemical necessary for protein deposits to cause brain lesions.

      5 Though most Alzheimer’s disease patients develop the disease when they are in their late fifties to early seventies, the frequency of patients who develop the disease in their forties is on the rise.更多精彩文章及讨论，请光临枫下论坛 rolia.net
      • 那就别活那么长憋，不用faint。你怎么突然间也弄起GMAT来了？也要读MBA? -jeffrey815(Smartiecat); 2003-1-5 (#957035@0)
        • 哦，挺好玩的。//有人把我当高手呢，我就跑着来问。:P -lilyba(Sunshine); 2003-1-5 (#957037@0)
      • 4?太困了，睡觉了 -heian(黑暗㊣电池工作3小时); 2003-1-5 (#957041@0)
        • 解释一下在睡觉吧。 -lilyba(Sunshine); 2003-1-5 (#957043@0)
          • 对不对啊？ -heian(黑暗㊣电池工作3小时); 2003-1-5 (#957044@0)
            • 对 -lilyba(Sunshine); 2003-1-5 (#957046@0)
        • 要不明天吧。你惦记着点就行了。谢谢 -lilyba(Sunshine); 2003-1-5 (#957045@0)
          • 我的想法是1,3,5是在分析现有数据方法,没有和结论矛盾的;2说到成因,但是是无法抗拒的,和原文不矛盾.只有4提出了人为改变病情的可能,和lives long enough will eventually develop Alzheimer’s disease矛盾. -heian(黑暗㊣电池工作3小时); 2003-1-5 (#957050@0)
            • 谢谢，我消化消化。 -lilyba(Sunshine); 2003-1-5 (#957055@0)

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