什么叫因果型结论？因果型结论的意思是：“我的结论里涉及到因果关系。”比如例二中，结论是【肥胖引发了心脏病。】这个结论中有因【肥胖】，有果【心脏病】。但是例一呢？例一的结论是【BAT的儿子也会很漂亮的】，这个结论就是个陈述句，没有因果的啊~！！作者: 凤凰不传奇 时间: 2013-1-19 10:32 标题: 自己顶 有同学有好的例子或是不同的见解吗？作者: 凤凰不传奇 时间: 2013-1-27 11:02
我自己再顶作者: lawyer_1 时间: 2013-5-8 22:48
条件型结论：结论带条件（即为充分必要）。WEAKEN的方法显示充分条件成立，必要条件可以不成立。或举反例，或提供有关信息。
很久以前了。条件型结论应该是结论为IF....THEN。如果OG没这样例子，GWD应该有。因为这种题型很容易找到答案，所以特别列出。作者: lawyer_1 时间: 2013-5-8 23:18
毛毛同学的OG12CR分类中提到这类型OG12CR中的22题（毛毛的总结），列于此
22. In the arid land along the Colorado River, use of the river's water supply is strictly controlled: farms along the river each have a limited allocation that they are allowed to use for irrigation. But the trees that grow in narrow strips along the river's banks also use its
water. Clearly, therefore, if farmers were to remove those trees, more water would be available for crop irrigation.
Which of the following , if true, most seriously weakens the argument?
(A) The trees along the river's banks shelter it from the sun and wind , thereby greatly reducing the amount of water lost through evaporation .
(8) Owners of farms along the river will probably not undertake the expense of cutting down trees along the banks unless they are granted a greater allocation of water in return .
(C) Many of the tree species currently found along the river's banks are specifically adapted to growing in places where tree roots remain constantly wet.
(0) The strip of land where trees grow along the river's banks would not be suitable for growing crops if the trees were removed.
(E) The distribution of water allocations for irrigation is intended to prevent farms farther upstream from using water needed by farms farther downstream.
