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标题: lsat-1-1-15 [打印本页]

作者: poorleafs 时间: 2005-10-9 13:07 标题: lsat-1-1-15

15. One of the more reliable methods of determining regional climatic conditions in prehistoric periods is to examine plant pollen trapped in glacial ice during ancient times. By comparing such pollen samples with spores taken from modern vegetation, scientists can figure out approximately what the weather was like at the time of pollen deposition. Furthermore, by submitting the prehistoric samples to radiocarbon dating techniques, we can also determine when certain climatic conditions were prevalent in that portion of the globe.
Which one of the following may be inferred from the information in the passage?
(A) The earth has undergone several glacial periods.
(B) Radiocarbon dating can be corroborated by glacial evidence.
(C) Similarities between prehistoric and contemporary climates do not exist.
(D) Pollen deposition is a fairly continuous process.
(E) Certain flora are reliably associated with particular climatic conditions.
the key: E，同意
B错在哪里？

作者: lemonees 时间: 2005-10-9 20:01

B 是不对。
如果说 b 是：regional climatic conditions can be corroborated by
glacial evidence ，有可能是个答案。但这里 b ： Radiocarbon
dating,其实只是在文里提到1 下，得不到其他和Radiocarbon dating 有
关的信息。

作者: leadership 时间: 2005-10-10 13:11

文章推理:
1. pollen in cie + spores --> what the weather was like at the time of pollen deposition
2. by submitting the prehistoric samples to radiocarbon dating techniques --> certain climatic conditions were prevalent...
请问, 选项E是否只用了第一个推理, 其实从文章what the weather was like at the time of pollen deposition就可以得出正确选项是E.
我这样理解对吗? 请NN确认.

作者: poorleafs 时间: 2005-10-12 13:03

many thanks !!!!

作者: steveyangxt 时间: 2006-1-14 22:24

以下是引用[I]leadership[/I]在2005-10-10 13:11:00的发言：[BR]文章推理:
1. pollen in cie + spores --> what the weather was like at the time of pollen deposition
2. by submitting the prehistoric samples to radiocarbon dating techniques --> certain climatic conditions were prevalent...
请问, 选项E是否只用了第一个推理, 其实从文章what the weather was like at the time of pollen deposition就可以得出正确选项是E.
我这样理解对吗? 请NN确认.

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