GWD31-Q28, 好心人帮忙看个争论题！

imtheone · 发表于 2008-8-20 20:53:00

Case in point: the snails were C14 dated to be around 27,000 years old because the only available source of carbon came from limestone, which has very little amounts of C14 isotopes.

http://wiki.cotch.net/index.php/Living_snails_were_C14_dated_at_27,000_years_old

sausau · 发表于 2008-10-1 04:05:00

到底选什么？

shakepig · 发表于 2008-10-1 14:01:00

是C还是E呢？？

听风听雨 · 发表于 2008-10-13 14:04:00

GOOGLE了一下，有不少科普类文章中有出现DATE TO BE

linuxzh · 发表于 2008-12-12 23:35:00

倒地哪个啊，估计GWD自己都不知道

yzhao26 · 发表于 2009-3-19 10:56:00

hjsh0204 · 发表于 2009-3-21 11:48:00

正确答案揭晓，今天作的prep模拟上有，选E.

lupisces · 发表于 2009-6-11 17:54:00

right prep E

stellachan · 发表于 2009-6-12 13:54:00

为什么选E??????

zliycwn1 · 发表于 2009-6-12 22:40:00

那大家就记住好了dated at + 时间点

GWD31-Q28, 好心人帮忙看个争论题！

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