helr老师CR书上的一道题

纪小公举

Helr老师的CR书上有一道题，如下：

Numerous ancient Mayan cities have been discovered in the Yucatan peninsula in recent decades. The ruins lack any evidence of destruction by invading forces, internal revolts, or disease, and appear simply to have been abandoned. Some archaeologists have theorized that the cities were abandoned due to a severe drought known to have occurred in the region between 800 and 1000 A.D.

Which of the following, if true, most strongly supports the archaeologists’ theory?
(A) Ample archaeological evidence of Mayan peasant revolts and city-state warfare exists, but such events could never result in the permanent abandonment of cities.
(B) No monumental inscriptions created after 900 A.D. have been found in these cities, but inscriptions dating before that time have been found in abundance.
(C) Studies of Yucatan lake sediment cores provide conclusive evidence that there are only 4 ways including invading forces, internal revolts, diseases, and weather that might cause Mayan cities to be abandoned.
(D) Climatic studies have documented cycles of intermittent drought in the Yucatan peninsula dating from the present to at least 7,000 years ago.
(E) The Mayan city, Uxmal, was continuously inhabited from 500-1550 A.D.

自己做的时候错选了B，helr老师给出的正确答案C

但是在网上搜索的时候，看到一个帖子也是在分析这个题目的，给出的选项有一个不同 （注意，下面选项中c选项和上面的c选项不同）
A) Ample archaeological evidence of Mayan peasant revolts and city-state warfare exists, but such events could never result in the permanent abandonment of cities.(B) No monumental inscriptions created after 900 A.D. have been found in these cities, but inscriptions dating before that time have been found in abundance.
(C) Studies of Yucatan lake sediment cores provide conclusive evidence that a prolonged drought occurred in the region from 800 to 1000 A.D.
(D) Climatic studies have documented cycles of intermittent drought in the Yucatan peninsula dating from the present to at least 7,000 years ago.
(E) The Mayan city, Uxmal, was continuously inhabited from 500-1550 A.D.


这个帖子也给出了做题分析过程：
Now, what’s gap in logic here?  We’re concluding that the Mayans fled their civilizations between 800-1000 AD due to a drought, and we’re basing that on the fact that:
-A drought occurred during that time
-There isn’t any evidence of the Mayans fleeing for any other reason
What’s missing?  We don’t have any evidence that they left during the drought.  All we know is that/when a drought occurred, but we don’t have any evidence linking the Mayan flight to that drought.  So what do we need to have in our answer?  Something that ties their leaving to the drought itself.
If you know that, you’re much more likely to select correct choice B, which links the Mayan departure to the time period of the drought.  It helps to fill that gap in logic.


看了两遍的分析，有点疑惑。想请教各位大大，这是否说明B选项在有helr老师题目中的C选项出现的时候就不是most strongly，而在没有这个C选项的情况下，就是最strong的了呢？

TianNao

C更好

题目说的是，没有证据说明“invading forces, internal revolts, or disease”，城市只是被废弃了，结论：是800-1000年间的干旱导致了城市的废弃。

B说明了900年前有人，900年后没有人 -》 城市是900年前后被废弃的（怎么废弃的不知道，也许是干旱也许是其他的原因，比如外星人入侵）

C说明只有四种可能使得城市被废弃：4 ways including invading forces, internal revolts, diseases, and weather。-》因为前三个前三个被提干排除，就只剩最后一个了，weather！

最后，这是一道争议题目，建议直接pass。

纪小公举

lisiberry 发表于 2017-3-16 18:31
这是一道争议题。没有权威的答案，不敢贸然给你讲，你看看这些解释吧。
http://forum.chasedream.com/threa ...

谢谢谢谢！ 一不小心纠结在一个争议题上，还好你告诉我，谢谢啦！

lisiberry

这是一道争议题。没有权威的答案，不敢贸然给你讲，你看看这些解释吧。
http://forum.chasedream.com/thread-1280788-1-1.html
https://gmatclub.com/forum/numerous-ancient-mayan-cities-have-been-discovered-in-the-121858.html?sid=54e41f669aeb079635d47357561bcd85
个人分析是感觉B和C都有一点说服力，但B有瑕疵。
B。只是证明了一个时间，没有证明弃城就是因为干旱。但因为干旱时间跟这个证据时间相近。
C。告诉大家可选的范围只有1.2.3.4 --》因为其他可能性都没有证据，但只有干旱有证据。因此证明干旱才是弃城的真正理由。

我个人比较喜欢C。因为在科学考察里，在只有一种证据的时候，科学家就会用这一种证据来解释一件考古学的事件。
LZ当然可以再听取一下其他人的意见，但因为此题不是OG上的题，建议不用太执着。