题库搜索>逻辑CR-10562
Fact: Asthma, a bronchial condition, is much less common ailment than hay fever, an allergic inflammation of the nasal passages.
Fact: Over 95 percent of people who have asthma also suffer from hay fever.
If the information given as facts above is true, which of the following must also be true?
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
我有更好的解析 
暂无雷哥网文字解析
事实1：作为支气管疾病中一种，哮喘没有花粉过敏那么普遍。花粉病是鼻腔内因过敏引起炎症。
事实2：超过95%的哮喘病人也患有花粉过敏。
思路：
设患哮喘而不患花粉症的人数是 x，患花粉症而不患哮喘的人数是 y，患花粉症与哮喘的人数是 z。
题干的资料是：
y + z 比 x + z 大很多，即 y 比 x 大很多。同时 z/x = 0.95。
因为 y 比 x 大很多，所以 z/y 比 0.95 小很多
a 花粉病是哮喘发生的前提，无关
b 哮喘是花粉病的前提，无关
c 既没有花粉病又没有哮喘的人在总人口中不到5%，无关
d 两种疾病都有的人比只有其中一种疾病的人数多，无关
e 少于95%的人既有花粉病又有哮喘。正确
191180alwf
woc，这道题目放在数学里都是650+吧
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2023-03-15 15:58:11
Monicayi
用韦恩图一目了然
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2021-07-28 16:21:01
嘉仓佑措
从没想到cr用韦恩图这种思路
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2019-03-08 02:05:37
汪二喵
我是不是阅读有问题？E选项读不出想表达谁是谁的95%……
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2018-12-06 15:54:49
589285dk回复汪二喵
我也是
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2019-10-30 18:45:23
suzy
快速解题思路： FACT 1：Asthma小于Hay fever FACT 2：超过95%的热有A的人也会有H（注意这里的95%是概率，不是有95%的人数） A和B：只知道百分比，都不能推出谁是谁的前提 C：不能从概率得到精确人口数量 D：不能从概率得到the number of E: 概率得到概率，完美
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2017-11-06 10:22:52
suzy
must be true题。。。
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2017-11-06 10:15:22
fatso
可以画一个维恩图来理解 hay fever的圈圈比bronchial的圈圈大 他们两个圈圈的重合部分是bronchial圈圈的95% 所以重合部分肯定小于hay fever圈圈的95%
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2017-09-26 21:24:32
chenrrrry回复fatso
太赞了 thanks
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2018-04-14 16:28:29
1024804d回复fatso
哦哦哦原来重点在于fever的圈儿要大一些啊！！
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2021-01-08 20:29:04
FXZH回复fatso
哈哈哈哈哈
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2021-05-03 21:48:55
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