[考題] 一個托福閱讀題
Geologists working during the nineteenth century understood rock bodies, they
would have to concentrate on natural processes that continue at a constant
rate and that also leave some sort of tangible record in the rocks.
Evolution is one such process, and geologist Charles Lyell (1797-1875)
recognized this.
BY comparing the amount of evolution exhibited by marine mollusks then,
Lyell estimated that 80 million years had elapsed since the beginning of the
Tertiary Period. He came astonishingly close to the mark, since it was
actually about 65 million years. However, for older sequence of evolutionary
development, estimates based on parts in the fossil record. Rates of
evolution for many orders of plants and animals were not well understood.
根據上面原文
2. It can be inferred form paragraph 2 that Charles Lyell based his study of
the marine mollusk fossils on which of the following assumptions?
A. The Tertiary Period was separated into division of time that were equal in
length.
B. Mollusks lived under rocks in the sea during the Tertiary period.
C. Evolution of mollusks proceeded at a uniform rate over time
D. Mollusks have evolved less rapidly with the passing of time
答案是c
可是從這句
BY comparing the amount of evolution exhibited by marine mollusks then,
Lyell estimated that 80 million years had elapsed since the beginning of the
Tertiary Period.
應該是說8000萬年很快就飛逝過去
怎會會uniform rate over time?
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