GRE考试2015年10月17日阅读预测机经-智课教育旗下智课教育.pdf
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GRE考试2015年10月17日阅读预测机经-智课教育旗下
智课教育
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Although passenger pigeons, now extinct, were abundant in
eighteenth-and
nineteenth-century America, archaeological studies at
twelfth-century Cahokian sites in the
present-day United States examined household food trash
and found that traces of passenger
pigeon were quite rare. Given that the sites were close to a
huge passenger pigeon roost
documented by John James Audubon in the nineteenth
century and that Cahokians consumed
almost every other animal protein source available, the
archaeologist conducting the studies
concluded the passenger pigeon population had once been
very limited before increasing
dramatically in post-Columbian America. Other
archaeologists have criticized those
conclusions on the grounds that passenger pigeon bones
would not be likely to be preserved.
But all the archaeological projects found plenty of bird
bones--and even some tiny bones from
fish.
1. The author of the passage mentions tiny bones from fish
primarily in order to
A. Explain why traces of passenger pigeon are rare at
Cahokian sites
B. Support a claim about the wide variety of animal proteins
in the Cahokian diet
C. Provide evidence that confirms a theory about the
extinction of the passenger pigeon
D. Cast doubt on the conclusion reached by the
archaeologists who conducted the studies
discussed in the passage
E. Counter an objection to an interpretation of the data
obtained from Cahokian sites
答案:C
长阅读
In 1995 the Galileo spacecraft captured data about Jupiters
atmosphere--namely, the
absence of most of the predicted atmospheric water--that
challenged prevailing theories about
Jupiters structure. The unexpectedness of this finding fits a
larger pattern in which theories
about planetary compos
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