费费逻辑 60，已解决

暗绯莎

60. 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 take 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.


答案是E。。。解释看不明。。。
里面有说“you should treat it the same way as ASSUMTION question”，为什么啊？？

coolhaoming

简化题干：科学家通过在冰川里的史前植物的花粉的分析来获得史前气候的情况。通过碳十四测定具体的时间来精确获得花粉的形成时间，从而精确得知某一时间的气候情况。
A地球经历了几个冰川时期。从题干看不出来。
B碳十四测定的结果可以通过冰川证据来确认。碳十四测定的对象是冰川里的花粉，不能从题干看出来冰川证据加强了测定的结果。
C史前和现代的气候没有相同点。这个题干推不出来，得等到科学家做完了试验才知道了，呵呵
D花粉沉积是个连续的过程。原文没有相关信息。
E某些植物与特殊的气候有很可靠的关系。正是因为这样，才能使通过研究花粉来获得气候信息成为可能。
多多指教。

暗绯莎

恩，了解了~~~谢啦~~