GWD31-Q28 DATE TO BE OR DATE AT???

legnawen

28. GWD31-Q28

     

Rock
samples taken from the remains of an asteroid about twice

     

the size
of the 6-nuke-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.
     

1)
has been dated to be 3.47
billion years old and thus is

     

2)
has been dated at 3.47 billion
years old and thus

     

3)
have been dated to be
3.47billion years old and thus are

     

4)
have been dated as being 3.47
billion years old and thus

     

5)
have been dated at 3.47 billion
years old and thus are

C,OR E ???

og 上 sloth 那道用的是date at

这里的答案是date to be

natalietong

e,首先这个必须用have,另外只有dated at,没有dated to be

danni423

查了字典是date at....或date back to 這裡的用法應是date at

lenghongmin

"date at"  is idiomatical

bloomers

没有date to be的说法。

E是OG12的标准答案。

weixuan

OG12最后一题，GMAC的官方解释是：The idiomatic way of expressing estimation of age is with the phrase 'dated at'