OG13版 逻辑第50题 求解。

sunruixue

请问OG13版 逻辑部分的第50题 为什么答案是B呢？ 希望有人来解答，谢谢。

sunruixue

One variety of partially biodegradable plastic beverage container is manufactured from small bits of plastic bound together by a degradable bonding agent such as cornstarch. Since only the bonding agent degrades, leaving the small bits of plastic, no less plastic refuse per container is produced when such containers are discarded than when comparable nonbiodegradable containers are discarded.

Which of the following, if true, most strengthens the argument above?
ABoth partially biodegradable and nonbiodegradable plastic beverage containers can be crushed completely flat by refuse compactors.  
BThe partially biodegradable plastic beverage containers are made with more plastic than comparable nonbiodegradable ones in order to compensate for the weakening effect of the bonding agents.  
CMany consumers are ecology-minded and prefer to buy a product sold in the partially biodegradable plastic beverage containers rather than in nonbiodegradable containers, even if the price is higher.  
DThe manufacturing process for the partially biodegradable plastic beverage containers results in less plastic waste than the manufacturing process for nonbiodegradable plastic beverage containers.  
ETechnological problems with recycling currently prevent the reuse as food or beverage containers of the plastic from either type of plastic beverage container.  

sunruixue

alzn2765 发表于 2015-8-9 10:16
因果推理：前提（因）：only the bonding agent degrades, leaving the small bits of plastic
结论（果） ...

非常感谢你，我理解了。

alzn2765

因果推理：前提（因）：only the bonding agent degrades, leaving the small bits of plastic
结论（果）：no less plastic refuse per container is produce

从前提无法直接推出结论，之间有一个明显的''gap"，B正好填补了这个Gap。

因说只剩下一些小片的塑料（粘合剂降解了），果却是没有产生更少的不可降解的塑料垃圾。

B说因为这种方法生产出来的塑料（用小片塑料+粘合剂）不结实，为了补偿比较弱的强度，必须用更多的用小片塑料（跟普通生产一个塑料瓶相比）。


把B放在前提和结论之间，推理现在就完全正确了。