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OG13 81 fossils of ths arm of a sloth found in Puerto Rico in
1991. and dated at 34 million years old, made it the
earliest known mammal of the Greater Antilles Islands.
(A) sloth found in Puerto Rico in 1991, and dated at
34 million years old, made it the earliest known
mammal of
(B) sloth, that they found in Puerto Rico in 1991, has
been dated at 34 million years old, thus making
it the earliest mammal known on
(C) sloth that was found in Puerto Rico in 1991, was
dated at 34 million years old, making this the
earliest known mammal of
(D) sloth, found in Puerto Rico in 1991, have been
dated at 34 million years old, makingthe sloth
the earliest known mammal on
(E) sloth which, found in Puerto Rico in 1991, was
dated at 34 million years old, made the sloth the
earliest known mammal of
A答案解释说 it makes no sense to say that the fossils made it the earliest known mammal. 是什么意思啊 化石使得sloth是最早 动物 不可以么
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发表于 2014-8-23 10:47:17
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