我觉得这个逻辑题可以分成两种: 一种是证明的逻辑非常严密,挑不出毛病的,这种通常答案是排除干扰因素 一种是中间跳了几环,然后这跳的几环就是出题关键点,如果想出简单题的话,我可以把跳的这几个环的关键词直接放在选项里,这样有关无关方法就很好用,如果想出难题的话,我可以在这几个环上做点技巧,比如我说的是其它的东西,但是其他的东西可以推导出这几环,然后那些用有关无关选项的人就妥妥的排除了正确选项哈哈哈哈: 例如: Although fullerenes--spherical moleculesmade entirely of carbon--were first found in the laboratory, they have sincebeen found in nature, formed in fissures of the rare mineral shungite. Sincelaboratory synthesis of fullerenes requires distinctive conditions oftemperature and pressure, this discovery should give geologists a test case forevaluating hypotheses about the state of the Earth's crust at the time thesenaturally occurring fullerenes were formed. Which of the following, if true, mostseriously undermines the argument? (A) Confirming that the shungite genuinelycontained fullerenes took careful experimentation. (B) Some fullerenes have also been found onthe remains of a small meteorite that collided with a spacecraft. (C) The mineral shungite itself containslarge amounts of carbon, from which the fullerenes apparently formed. (D) The naturally occurring fullerenes arearranged in a previously unknown crystalline structure. (E) Shungite itself is formed only underdistinctive conditions. 看这道题的时候我们基本都大概能懂这题的意思是“发现了F-F只有一定温度和压力下才能形成-推断出来F形成时候地表的温度和压力” , 这个时候我们通常会觉得有些奇怪,为什么这个温度和压力就是地表的温度和压力呢?这就是关键的掉链子的地方,这里少了一环,叫做,F在实验室里的温度和压力和自然里形成的温度和压力是一样的,当然题目为了难度,不会告诉你“实验室”里的温度和压力,这个需要自己判断,然后你以为找到了掉的链子就可以解题了吗? Too young too naïve…当你一看答案的时候,是不是发现,woc没有一个是说温度和压力的?好像一个都选不出来,该怎么办啊?!恭喜你,中招了~GMAT的逻辑难题不会直接展示掉的这个逻辑链,那也太容易了吧对吧?你一旦看到就不会被别的选项吸引了,所以通常GMAT要从另一个方向延申一下缺的这个环,不直接给你,比如看到D选项后: The naturally occurring fullerenes are arranged in a previouslyunknown crystalline structure. 其实意思就是 unknowncrystalline structure→F在实验室里的温度和压力和自然里形成的温度和压力是不一样的
|