标题: GWD-31-Q28 Dated to be/dated at [打印本页] 作者: topbabysun 时间: 2011-5-26 23:28 标题: GWD-31-Q28 Dated to be/dated at GWD-31-Q28
Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on Earth.
A. has been dated to be 3.47 billion years old and thus is B. has been dated at 3.47 billion years old and thus
C. have been dated to be 3.47 billion years old and thus are
D. have been dated as being 3.47 billion years old and thus
E. have been dated at 3.47 billion years old and thus are
请问谁有证据证明dated to be...years old是错的或者不如dated at? 作者: xihahiphoop 时间: 2011-6-6 20:35
be dated to be 3.47 billion years ago be dated at 3.57 billion years old作者: Bosscat23 时间: 2011-6-28 10:49
OG上都说了，dated at是固定搭配：追溯到某一具体时间的意思。作者: xiaodaben 时间: 2012-4-1 11:28
那我就不明白了，既然dated at 是追溯到某一具体时间的意思，那么就是说n years old 是一个具体的时间？ n years old 不是n 岁的意思吗？作者: rocmoon 时间: 2012-4-27 10:35
be dated to be 3.47 billion years ago be dated at 3.57 billion years old