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LZ你说的SEDIMENT是那篇啊?是这篇吗 Milankovitch Cycles Theory Milankovitch cycles theory is about the frequency of ice age. Milankovich proposed that the temperature of earth has something to do with the position of the earth in the orbit around sun. However it did not gain acceptance until 1968 when Dr. Imbrie presented additional evidence for M theory. He meassured the isotope level in small seashell deposit and the change of isotope abundancy corresponds with the temperature change. However, later on, a geochemist tested the samples from Devil's Hole, a place in south Nevada and the results did not match with the previous results. Even thought Dr. Imbrie still think M theory was valid, he conceded that many other factors contribute to the isotope level. It maybe why the results did not match. 或者是 这个版本? 1.先是陈述了 这个理论 然后说当时人们只能在实验条件不足的情况下 有些人研究了一下化石一类的,大体的承认这个理论 2.但是1950年出了个A.B 研究了一些东西,carbon rating之类的,说是理论错误了。(我觉得段时间内人们都不再接受M的理论了.随着科技的进步,应该是旧的改良结合很多其它新的technology, 出现了 证明了AB的 证据索取是比较片面的 M再次被人们接受。 问题:1. A..B. 对MilankovitchCycles Theory的看法 2. 主题题:选的不同的方法对某一科学推断的研究和看法(没有一个选项提到了Milankovitch CyclesTheory,所以猜测某一科学推断指代Milankovitch CyclesTheory)。 3.Infer: 说如果第一段那些“当时人们”有accurate carbondating technologies 的时候,他们会怎样? 4. 不记得了MilankovitchCycles Theory的看法 |
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