由FEIFEI逻辑79题引申的问题--ASSUMPTION题型和SUPPORT的区别

在FEIFEI逻辑里,有道例题

Despite improvements in treatment for asthma, the death rate from this disease has doubled during the past decade from its previous rate. Two possible explanations for this increase have been offered. First, the recording of deaths due to asthma has become more widespread and accurate in the past decade than it had been previously. Second, there has been an increase in urban pollution. However, since the rate of deaths due to asthma has increased dramatically even in cities with long-standing, comprehensive medical records and with little or no urban pollution, one must instead conclude that the cause of increased deaths is the use of bronchial inhalers by asthma sufferers to relieve their symptoms.

A.        Urban pollution has not doubled in the past decade.

B.        Doctors and patients generally ignore the role of allergies in asthma.

C.        Bronchial inhalers are unsafe, even when used according to the recommended instructions.

D.       The use of bronchial inhalers aggravates other diseases that frequently occur among asthma sufferers and that often lead to fatal outcomes even when the asthma itself does not.

E.        Increased urban pollution, improved recording of asthma deaths, and the used of asthma deaths, and the use of bronchial inhalers are the only possible explanations of the increased death rate due to asthma.

参考答案：E

思路：不是解释1和2，就是解释3。隐含了1，2，3外没用其他解释的理由。

A.        支持。

B.         无关。中心是role的问题。

C.         可以算无关，也可以算削弱。

D.        加强

E.         取非，除了1，2，3解释还有其他解释。典型的他因削弱，符合ETS 假设定义。

我的理解:ASSUMPTION题型本质上就是SUPPORT,那答案D-加强项为什么错呢?

由这个问题引申开:  如果ASSUMPTION题型本质上是SUPPORT,但我还是很疑惑为什么lawyer要把ASSUMPTION和SUPPORT分开讲?分要有分的道理啊,到底ASSUMPTION和SUPPORT的本质区别在那里呢????

疑惑,头疼,求悟!