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浏览次数:107 日期:2017-10-13 10:01:36

Which of the following most logically completes the argument given below?

People in isolated rain-forest communities tend to live opa 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______

 

 A

genetic factors could account for the lack of increase of blood pressure with age among such people

 B

people eating high-salt diets and living from birth in cities in industrialized societies generally have a tendency to have high blood pressure

 C

it is possible to have a low-salt diet while living in a city in an industrialized country

 D

there are changes in other aspects of diet when such people move to the city

 E

salt is a necessity for human life,and death can occur when the body loses too much salt



正确答案:D


题目解析:

哪一个可完成此句最有逻辑性?
住在雨林中的人以素食为主,吃很少盐。他们中没有人得高血压,血压也不会随年龄上升。这样的人在移到城市后会吃高盐食物。尽管如此,这些事实不能说明高盐就是高血压的祸因,因为__________;
增强题
逻辑链:  雨林人不吃盐血压低,移到城市后血压高+    -----》   血压高不来自高盐
A 遗传原因是雨林人血压不随年龄升高原因;逻辑链没提到遗传,且没解释如何高盐不导致高血压,无关;
B 高盐、住在城市往往会有高血压;增强,非削弱,方向反;
C 住在城市,但吃低盐食物是可能的;与逻辑链无关,排
D 雨林人移到城市后其他方面改变了;搭桥增强,其他方面导致高血压,而非高盐导致,正确
E 盐是必须的,身体缺太多盐会导致死亡;无关


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