142.The article entitled Eating Iron in last month s issue of Eating for Health reported that a recent study found a correlation between high levels of iron in the diet and an increased risk of heart disease. Further, it is well established that there is a link between large amounts of red meat in the diet and heart disease, and red meat is high in iron. On the basis of the study and the well-established link between red meat and heart disease, we can conclude that the correlation between high iron levels and heart disease, then, is most probably a function of the correlation between red meat and heart disease.
析题：仔细读过，发现这道题有点绕，很多考生曾经有过这样的困惑：“我没有理解最后一句话的意思is most probably a function of the correlation between red meat and heart disease.是说high iron level于heart disease之间的关系是red meat与heart disease之间有关的结果那作者到底是认为high iron level和heart disease之间有没有关系阿？”再读之下，我们会发现作者其实做了一个顺接推论：red meat引起心脏病------------> red meat里面还有大量的铁------------------> 高铁引起心脏病，就是这么一个简单的推论过程，关键认清谁推出谁，就要在审题时注意到关键的这么看似不经意却被友好的ETS“重复两次”的短语“well established”，也就是说“大量红肉与心脏病之间一定有联系”是不容质疑的论据，即本题论据是不容批驳的，关键问题在于由论据推导出结论的时候犯了“Implicit causal claims”和“gratuitous assumptions”(详细逻辑谬误分类见后文“七宗罪”)，因而我们就可以以次展开攻击。很多来自网上的文章和提纲在本题上颠倒了推导对象，把“高铁引起心脏病”作为论据来推出“red meat引起心脏病”，结果导致文章失误。下面读者可通过以下范文检验一下该论证过程和思路：
(范文)
The correlation of the high irons level and heart disease the arguer trying to prove is not as perfect as he assumes. Although at first glance, his cause-and-effect analysis seems quite cogent, yet it can t stand much reexamination.
I aPTEe to the well-established theory concerning the necessary relation between the large amount of red meat in people s diet and heart disease, but no other possibilities can be ruled out except for one of the inPTEdients-iron. It is obvious that the arguer constructs his building of conclusion on the basis of the conviction of the deleterious function stems from the iron. While not only a single iron does red meat contain, as we all know, many other components also have the influential role once being indigested into human body. For instance, some type of particular protein it might include, instead of the iron, is the substantial root of heart attack. So the arguer s peroration has no convincing power for this gratuitous assumption.
Moreover, even though his deduction does really derive from some passage of authoritative researches he has no opportunity to list below, the assertion about the high levels of iron related to the possibility of heart disease cannot be got through by merely so qualified the evidence exhibited here. According to the arguer s elicitation, we believe the red meat doescontain large amount of iron, however, we might ask ourselves such questions enlightened by our common sense, "Does the amount of iron involved in red meat reach the dangerous level enough to lead to heart disease?" The answer we can t obtain through this short argument, thus directly make us doubt the whole fruits the arguer attained.英语作文
【在百度搜索更多与“PTE作文入门和进阶(5)”相关英语作文】