Q40:Which of the following most logically completes the argument given?
People in isolated rain-forest communities tend to live on a largely vegetarian diet, and they eat little salt. Few of them suffer from high blood pressure, and their blood pressure does not tend to increase with age, as is common in industrialized countries. Such people often do develop high blood pressure when they move to cities and adopt high-salt diets. Though suggestive, these facts do not establish salt as the culprit in high blood pressure, however, because ________.
the answer is D,C is also reasonable,how to eliminate C?
C is not realted. We are talking about people who have high blood pressure here after they get in the city. C is talking about something else, which is irrelevant.
题干：一些原来在热带雨林生活的人在搬到城市生活并适应了高盐的饮食后，得了高血压。但是，这些事实并没有证明盐是导致高血压的原因，因为：
D 当人们搬到城市后，在饮食方面有一些其他的改变。
C完全无关
然而，尽管有这样的暗示，但这些事实不能认为是“盐导致了高血压”
D：有其它的原因
C：在工业化国家吃含盐量少的饭是可能的。－－－无关
谢谢各位，题中结论是说低盐的人跑到城市变成高盐的人得了高血压，但高盐并不是原因。
D 说这一过程中有其他改变导致高血压
C推理如下：城市人低盐生活是可能的（但还是会得高血压）=>高盐并不是高血压原因，这一过程我只focus
城市人和含盐量，跟热带雨林低盐人搬到城市这一事实毫无关联，所以才错？
谢谢各位，题中结论是说低盐的人跑到城市变成高盐的人得了高血压，但高盐并不是原因。
D 说这一过程中有其他改变导致高血压
C推理如下：城市人低盐生活是可能的（但还是会得高血压）=>高盐并不是高血压原因，这一过程我只focus
城市人和含盐量，跟热带雨林低盐人搬到城市这一事实毫无关联，所以才错？
城市人低盐生活是可能的（但还是会得高血压）=>高盐并不是高血压原因，这样的主观推断比较的忌讳
A: 基因决定血压状态；哪，进城，这些人的基因不变啊，按此推理，基因决定的状态也不该有变。
这样子就变成排除他因（排除genetic factors导致血压状况变动）－－－>搞到变成支持salt变－－－>blood pressure变
D：非盐的因素有变动
列出他因（其他因素：in other aspects of diet 变动，可能导致high blood pressure）
Ans：D
B,C,E恩判断为无关选项
C does not affect the argument
though it is possible to have a low-salt diet while living in a city in an industrialized country,
Such people indeed adopt high-salt diets.
C is irrelevant. D at least is better.
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