请教og11-18
Opponents of laws that require automobile drivers and passengers to wear seat belts argue that in a free society people have the right to take risks as long as the people do not harm others as a result of taking the risks.As a result, they concluded that it should be each person's decision whether or not to wear a seat belt.
答案是B:Automobile insurance rates for all automobile owners are higher because of the need to pay for the increased injuries or deaths of people not wearing seat belts
B到底从哪里weaken了conclusion呢?原文已经说了只要他们不harm others...
楼主一定是奇怪,答案为什么可以否定了前提因素:harm others,
一般来说前提由A 推出 B ,weaken结论 B 的时候不能否定A是错的,此题也是如此,
前提是“人们应该有权利冒险”
但是,as long as not do harm to others ,并不是前提,只是逻辑推到的一部分,
所以可以否定它,起到断桥削弱
削弱一般分为他因削弱,和断桥削弱
此题是断桥,证明A不能推出B。来削弱结论,其中包括 :
1)A非 推 B ,
2)A 推 B非,
3)逻辑中项 C的出现,否定C的推导,
4)直接说A 推不出B(这样说的一般要好好看看别的,一般选项不这么出)
他因是 A可以推出B,但是C也可以推出B,所以削弱了A的必要性,
我就知道这些了。。。hehe
削弱一般分为他因削弱,和断桥削弱
此题是断桥,证明A不能推出B。来削弱结论,其中包括 :
1)A非 推 B ,
2)A 推 B非,
3)逻辑中项 C的出现,否定C的推导,
4)直接说A 推不出B(这样说的一般要好好看看别的,一般选项不这么出)
他因是 A可以推出B,但是C也可以推出B,所以削弱了A的必要性,
我就知道这些了。。。hehe
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