谁来给我解释下这道逻辑题啊，谢谢~

茶色的秋天 · 发表于 2011-8-27 23:21:48

In 1992 outlaw fishing boats began illegally harvesting lobsters from the territorial waters of the country of Belukia. Soon after, the annual tonnage of lobster legally harvested in Belukian waters began declining; in 1996, despite there being no reduction in the level of legal lobster fishing activity, the local catch was 9,000 tons below pre-1992 levels. It is therefore highly likely that the outlaw fishing boats harvested about 9,000 tons of lobster illegally that year.

Which of the following is an assumption on which the argument depends?

A.   The illegal lobster harvesting was not so extensive that the population of catchable lobsters in Belukia’s territorial waters had sharply declined by 1996.
B.   The average annual lobster catch, in tons, of an outlaw fishing boat has increased steadily since 1992.
C.   Outlaw fishing boats do not, as a group, harvest more lobsters than do licensed lobster-fishing boats.
D.   The annual legal lobster harvest in Belukia in 1996 was not significantly less than 9,000 tons.
E.   A significant proportion of Belukia’s operators of licensed lobster-fishing boats went out of business between 1992 and 1996.

我发现我完全不能建立联系，一头雾水，请问我这算什么思维错误？

本题何解啊？跪求高人指点

茶色的秋天 · 发表于 2011-8-27 23:35:37

还有这题，为什么不选E选C？
Lyme disease is caused by a bacterium transmitted to humans by deer ticks. Generally deer ticks pick up the bacterium while in the larval stage from feeding on infected white-footed mice. However, certain other species on which the larvae feed do not harbor the bacterium. Therefore, if the population of these other species were increased, the number of ticks acquiring the bacterium―and hence the number of people contracting Lyme disease—would likely decline.

Which of the following, if true, most strengthens the argument?

A.   Ticks do not suffer any adverse consequences from carrying the bacterium that causes Lyme disease in humans.
B.   There are no known cases of a human’s contracting Lyme disease through contact with white-footed mice.
C.   A deer tick feeds only once while in the larval stage.
D.   A single host animal can be the source of bacteria for many tick larvae.
E.   None of the other species on which deer tick larvae feed harbor other bacteria that ticks transmit to humans.

感谢啊，回帖赚RP哦~

sanlingjie · 发表于 2011-8-27 23:57:46

第一题选A。A的大致意思就是1996年可捕捉的龙虾的总量相对于以前没有减少，这样才可能1996年的时候非法捕捉了9000只，要是总体能捕捉的龙虾总量减少了，那就补纯是1996年的非法捕捉造成的了。打个比方吧，比如1992年有20000只龙虾可捕捉，然后合法捕捉了10000只，到了1996年还是总共有20000只（随便多少只，不要比1992少太多就行了）可供捕捉（不要跟我说期间为啥合法捉了一万到1996年还有两万。。。就是因为又生了小龙虾呗。。。），那么1996年合法捕捉的龙虾相对于1992年而言少了9000只，也就是只合法捕捉了1000只，那么那9000只就可能是被非法捕捉了；但是如果1992年20000只供捕捉，合法捉了10000只，结果这四年间非法捕捉太厉害了，导致1996年可供捕捉的龙虾总量只剩1000只了，那么这1000只其实都被合法捉走了，而它还是比1992年合法捉的要少9000只，但是那9000只是在1996年被非法捕捉了吗？显然不是吧

sanlingjie · 发表于 2011-8-28 00:22:11

顺便说一下第二题，第二题就是一个概率问题。现在deer ticks有两类食物可以吃，一类是有病的白老鼠，一类是没病的其他种类食物，文章说增加其他没病的食物就能降低人类得病的数量，那隐含之意就是deer ticks中只吃没病的食物的概率大了（注意是只吃，因为一旦两种都吃，那么deer ticks还是会得病的）。C加强了，因为如果在幼虫期deer ticks只吃一次食物的话（我也不知道为啥幼虫期它只进食一次。。。减肥么，就是说。。。）那么要么它这一次进食就吃到有病的，要么就吃到没病的，但是没病的食物数量增多，那么吃到它的概率也就增大了。。。所以支持了原结论。

ssxxtt27 · 发表于 2011-8-28 00:46:46

顶啊顶~~~

ssxxtt27 · 发表于 2011-8-28 00:53:41

第二题
只吃一次能将被感染概率降为最低，所以strengthen

hanshipeng · 发表于 2011-8-28 05:21:30

第一题，非法的取缔了，合法的不变，产量下降，从而推出下降是由于取缔非法造成的。找假设。产量下降有两个原因，1，捕捞少了（取缔非法）；2，被捕捞对象少了。此题是想支持1，那么2就不能成立。所以捕捞对象没减少。即A。

茶色的秋天 · 发表于 2011-8-28 12:14:34

万分感谢

茶色的秋天 · 发表于 2011-8-28 12:15:07

谢谢，你的解释比较好懂。

本贴相关题目 TN-13-CR-28 (ARSW)

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谁来给我解释下这道逻辑题啊，谢谢~

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