og-10再讨论

soaring

这个帖子翻完了http://forum.chasedream.com/dispbbs.asp?BoardID=24&ID=27025，依然看不懂

OG-10
10. Meteorite explosions in the Earth’s atmosphere as large as the one that destroyed forests in Siberia, with
approximately the force of a twelve-megaton nuclear blast, occur about once a century.
The response of highly automated systems controlled by complex computer programs to unexpected
circumstances is unpredictable.
Which of the following conclusions can most properly be drawn, if the statements above are true, about a highly
automated nuclear-missile defense system controlled by a complex computer program?
A. Within a century after its construction, the system would react inappropriately and might accidentally start a
nuclear war.
B. The system would be destroyed if an explosion of a large meteorite occurred in the Earth’s atmosphere.
C. It would be impossible for the system to distinguish the explosion of a large meteorite from the explosion of a
nuclear weapon.
D. Whether the system would respond inappropriately to the explosion of a large meteorite would depend on
the location of the blast.
E. It is not certain what the system’s response to the explosion of a large meteorite would be, if its designers
did not plan for such a contingency.

牛牛出来解释一下为什么选E?

还有og上关于各个答案的解释，我翻来覆去没看懂

蓝夕叶子

Meteorite explosions 和nuclear blast很象，一个世纪发生一次。基本上就算是unexpected circumstances 了，呵呵。

因为highly automated systems 对unexpected circumstances是unpredictable，所以这个系统对Meteorite explosions 也 是unpredictable的。

不知道姐姐是怎么想的？

soaring

我选E是因为觉得它和题目最对仗

其余的我不知所云

解释把我看得稀里糊涂的。。。。

zhoushao

说说我得理解

If the defense system designers did not plan for the contingency of large meteorite explosions,

such explosions would, from the system’s perspective, be unexpected. The system’s response

to such explosions is consequently unpredictable. E expresses this inference and is thus the

best answer. A cannot be inferred since it is consistent with the stated information that no

meteorite explosion will occur within a century. B cannot be inferred since there is no

information to suggest that meteorite explosions in the atmosphere would destroy the system.

C cannot be inferred since it is consistent with the stated information that an appropriately

designed nuclear defense system might be able to distinguish nuclear from meteorite

explosions. D cannot be inferred since there is no information to suggest that the location of

blasts would determine the appropriateness of defense system’s response.

我认为这里OG对AC的解释是抛开原文的，也就是说OG这里认为A是与

no meteorite explosion will occur within a century.在一个世纪里不会有一个陨石爆炸发生

保持一致的，A说：在系统建成后的一个世纪里，系统将会发生不合适的反映，可能意外发生一场核战争，那么也就说，陨石爆炸不会发生在一个世纪里，要发生也只能是核爆炸

而C项OG说是与

an appropriately designed nuclear defense system might be able to distinguish nuclear from meteorite explosions有可能设计一种核防御系统把核爆炸从陨石爆炸中区分出来

保持一致的

同样，对于C来说：说得是系统不可能将陨石爆炸从核爆炸中区分出来。

那和上面的保持一致地话，也就是说系统只能把核爆炸从陨石爆炸中区分出来，而不能将陨石爆炸从核爆炸中区分出来。

Goooooooooooooooooooooood!这个确实很费解，姐姐好好理解一下，不知道我说得能不能懂

蓝夕叶子

OG就在手头。我说说我的理解吧。open  to discussion.

A cannot be inferred since it is consistent with the stated information that no meteorite explosion will occur within a century.

A和题目的意思是不一样的。题目说的是occur about once a century，但是A中说的是Within a century after its construction，就不一样了。嗯，逻辑题要注意细微的差别。

B cannot be inferred since there is no information to suggest that meteorite explosions in the atmosphere would destroy the system.

偶叫这种错误叫infer过了头。嘻嘻。

C cannot be inferred since it is consistent with the stated information that an appropriately designed nuclear defense system might be able to distinguish nuclear from meteorite explosions.

同A

D cannot be inferred since there is no information to suggest that the location of blasts would determine the appropriateness of defense system’s response.

同B

我觉得，og的解释是先告诉你一个推断的过程，告诉你怎么找到正确答案。然后分段说明每个选项的错误。第十题关于A和C解释应该算是一个难句吧：）偶转化了一下，看的就比较很清楚啦。

说的不好，姐姐表笑。

蓝夕叶子

三个女生一台戏。

soaring

谢谢两个小妹：）

琢磨ing

同意

三个女生一台戏。

zhoushao

以下是引用蓝夕叶子在2005-5-7 15:52:00的发言：
三个女生一台戏。

灌水。。。。。。。闪拉

maodou

这篇帖子好及时啊！偶也是象楼主的情况一样，

做的时候懵出来的，以前的帖子和OG解释都看了

也不懂，看了两位的回帖有种突然开窍的感觉，西西～

现在觉得A和C是把不确定的推断成了确定的，而B D则是

与前提无关的。都错