V2
旧的定年法和新的定年法的那题。
题目:
新定年法有以下哪项成就??
此文章主旨是??
V3
radioactive carbon 作为考古鉴定方法有很大局限,它只能坚定40000年以内的,而且20000年以上的古物很难找到可以用来鉴定的物质。某新方法则不同,已经应用于以前不能确定的考古鉴定(第二段),而且有很大前景(第三段)。这个阅读比较长。
参考阅读:
The nature of the relationship between Neanderthals and early modern Homo sapiens is controversial (有争议的), yet it is fundamental to our understanding of early human evolution1,2. The Middle Palaeolithic sites of Israel are critical to this debate, because unlike those of western Europe and Africa they contain both Neanderthal (at Tabun3 and Kebara4 for example) and anatomically modern hominids (as at Skhul5 and Qafzeh6). Here we present new mass spectrometric 230Th/234U dates for dental fragments from the Middle Palaeolithic burial sites of Tabun, Qafzeh and Skhul. These data, combined with published ages from electron spin resonance (ESR), provide compelling evidence that the Tabun Neanderthals and Qafzeh early modern Homo sapiens were approximately coeval in the southern Levant some 100 5 kyr ago, but indicate that some of the Skhul material is younger. The study also shows that combined mass-spectrometric 230Th/234U and ESR dating is an invaluable technique for dating archaeological sites beyond the range of radiocarbon dating
32. sanctioning system的利弊
by ephemeral00关于sanctioning system对于一个公司来说的利弊的。文章不长,3段。说有学者觉得sanctioning system对公司有利。但有两位哥们T和M什么的,觉得这个制度不好,然后就在下面两段展开说了如何不好:一是该制度会影响员工的cooperative什么的,一是会影响员工的decision making frame(然后又和ethics什么的扯到一起了)。
1.1)问这片文章用意何在。
1.2)问作者同意哪种说法:我选的是:some workers in companies without sanctioning system will be cooperative什么什么的。
1.3)问关于对decision making frame什么的说法,作者最同意哪一个。
31. sanctioning system的利弊
by ephemeral00关于sanctioning system对于一个公司来说的利弊的。文章不长,3段。说有学者觉得sanctioning system对公司有利。但有两位哥们T和M什么的,觉得这个制度不好,然后就在下面两段展开说了如何不好:一是该制度会影响员工的cooperative什么的,一是会影响员工的decision making frame(然后又和ethics什么的扯到一起了)。
1.1)问这片文章用意何在。
1.2)问作者同意哪种说法:我选的是:some workers in companies without sanctioning system will be cooperative什么什么的。
1.3)问关于对decision making frame什么的说法,作者最同意哪一个。