OG11-53, 求助两道逻辑题

wotaowoyao

我是新手做逻辑做得心好乱，请高手不吝赐教！

OG11-53 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 nondegradable are discarded.

Which of the following,if true,most strengthen the argument above?

A)Both partially biodegradable and nonbiodegradable plastic beverage containers can be  crushed completely flat by refuse compators.

B)The partially biodegradable plastic beverage containers are made with more plastic than comparable non-biodegradable ones in order to compensate for the weakening effect of the bonding agents.

C)Many consumers are ecology-minded and prefer to buy a product sold in partially  biodegradable plastic beverage containers rather than in nonbiodegradable containers,even if the price is higher.

D)The manufacturing process for partially biodegradable plastic beverage containers results in less plastic waste than the manufacturing process for non-biodegradable plastic beveerage containers.

E)Technological problems with recycling currently prevent the reuse as food or beverage containers of the plastic from either type of plastic beverage container.

选B）

这题我都看不是很懂更没思路，还有一题关于数量问题的

Most parents who are generous are good parents，but some self-centered parents are also good parents。Yet all good paretns share one characterisitc：they are good listeners。If all of the statements in the passage are true，which one of the following must also be true？

A）All parents who are good listeners are not good parents。

B）Some parents who are good listeners are not good parents。

C）Most parents who are good listeners are generous。

D）Some parents who are good listeners are self-centered。

E）Fewer self-centered parents than generous parents are good listeners。

选D，要怎么划图做，这些数量关系如何表示

晴天小狗

OG11-53 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 nondegradable are discarded.
一种部分可降解的塑料包装盒是用小片的塑料制成，这些塑料是用诸如Cornstarch一类的可降解粘合剂粘在一起的。由于当这种包装被丢弃之后，只有粘合剂可降解，这样剩下塑料并不比并不比不可降解的包装盒少。
B：部分降解的包装盒比不可降解的包装盒要用更多的塑料，以补偿由于粘合剂所带来的weakening。 支持观点

Most parents who are generous are good parents，but some self-centered parents are also good parents。Yet all good paretns share one characterisitc：they are good listeners。If all of the statements in the passage are true，which one of the following must also be true？

A）All parents who are good listeners are not good parents。 
首先由第三句话推断：all parents who are good listeners = all good parents，所以A选项可以替换成：all good parents are not good parents-->错
B）Some parents who are good listeners are not good parents。
同理：some parents who are good listeners = some good parents， B选项替换成 some good parents are not good parents 错
C）Most parents who are good listeners are generous。
most parents who are good listeners = most good parents，C替换成most good parents are generous,错（未提及）
D）Some parents who are good listeners are self-centered。

E）Fewer self-centered parents than generous parents are good listeners。
无从比较，并没有给出generous parents的范围（most parents who are generous 不等于most generous parents）

晴天小狗

对了，og里面的题目通常能搜索的到。尽量不要发新的提问贴

 

wotaowoyao

谢谢晴天小狗的解释，下次发帖我会注意先收索

一种部分可降解的塑料包装盒是用小片的塑料制成，这些塑料是用诸如Cornstarch一类的可降解粘合剂粘在一起的。由于当这种包装被丢弃之后，只有粘合剂可降解，这样剩下塑料并不比并不比不可降解的包装盒少。
B：部分降解的包装盒比不可降解的包装盒要用更多的塑料，以补偿由于粘合剂所带来的weakening。 支持观点

黏合剂带来的weakening是什么意思？是说黏合剂减少了一部分塑料成分么？如果要多加塑料生产可降解包装的话，还有什么必要生产呢，这和不可降解的不就一样了吗？

XDF老师说做数量关系题比如有什么some，most，all等之类要画集合图表示，我对这类题不清楚，CD上哪有这类题的讨论呢？

kathy617

以下是引用wotaowoyao在2006-9-10 19:58:00的发言：

我是新手做逻辑做得心好乱，请高手不吝赐教！

OG11-53 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 nondegradable are discarded.

Which of the following,if true,most strengthen the argument above?

A)Both partially biodegradable and nonbiodegradable plastic beverage containers can be  crushed completely flat by refuse compators.

B)The partially biodegradable plastic beverage containers are made with more plastic than comparable non-biodegradable ones in order to compensate for the weakening effect of the bonding agents.

C)Many consumers are ecology-minded and prefer to buy a product sold in partially  biodegradable plastic beverage containers rather than in nonbiodegradable containers,even if the price is higher.

D)The manufacturing process for partially biodegradable plastic beverage containers results in less plastic waste than the manufacturing process for non-biodegradable plastic beveerage containers.

E)Technological problems with recycling currently prevent the reuse as food or beverage containers of the plastic from either type of plastic beverage container.

选B）

这题我都看不是很懂更没思路，还有一题关于数量问题的

我和朋友就这题讨论了一下，基本搞懂，

就是说由于这种部分可生物降解的塑料瓶是靠粘合剂把塑料小片粘合而成
而这种瓶子实际上就只有粘合剂可以降解
所以做这种瓶子的时候要用更多的塑料以加强粘合剂因可生物降解而有可能削弱的粘合作用
所以这种瓶子一旦丢弃
实际上产生的不可降解的塑料垃圾并不比不可降解的瓶子产生的塑料垃圾少
B strengthen the argument