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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？
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发表于 2017-3-16 14:50:17
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