是不是对选项取非，假设和推断题都能削弱原结论，那支持题呢。 还有是不是一个论断只能有一个assumption呢 例 Premise:Three years ago a business tax credit for research and development was enacted into law for the purpose of stimulating these business activities.
Premise:Overall business profits have risen seadily since the enactment of this law.
Conclusion:The tax credit has fail to achieve its objective of stimulating research and development.
答案给出的assumption:New investment in research and development does not generally enhance business profits within a brief period. 并且解释说以下为支持性论据： The tax is small compared to the costs of new research and development.
The general economic climate for business has remained at least as healthy as it was three years ago.
Taxes on business have oterwise either remained at current levels or declined during the same time period
The answer for an inference questions could be in many shapes. If the missing part is a necessary assumption, negation method should work. If the missing part is a conclusion, negation method might work as well.
If the missing part is a sufficient assumption, the negation method would not work.
Also, some inference questions are just a list of facts and not much logic involved. In this case, the neagation method might not work.
The answer for an inference questions could be in many shapes. If the missing part is a necessary assumption, negation method should work. If the missing part is a conclusion, negation method might work as well.
If the missing part is a sufficient assumption, the negation method would not work.
Also, some inference question are just a list of facts and not much logic involved. In this case, the neagation method might not work.
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发表于 2012-3-30 12:26:04
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