求助一道题

王Alcal1011 · 发表于 2011-11-2 06:49:50

实在看不懂这个逻辑，答案选A
5. Archaeologist: A skeleton of a North American
mastodon that became extinct at the peak of the
Ice Age was recently discovered. It contains a
human-made projectile dissimilar to any found
in that part of Eurasia closest to North America.
Thus, since Eurasians did not settle in North
America until shortly before the peak of the Ice
Age, the first Eurasian settlers in North America
probably came from a more distant part of
Eurasia.
Which one of the following, if true, most seriously
weakens the archaeologist’s argument?
(A) The projectile found in the mastodon does not
resemble any that were used in Eurasia before
or during the Ice Age.
(B) The people who occupied the Eurasian area
closest to North America remained nomadic
throughout the Ice Age.
(C) The skeleton of a bear from the same place and
time as the mastodon skeleton contains a
similar projectile.
(D) Other North American artifacts from the peak of
the Ice Age are similar to ones from the same
time found in more distant parts of Eurasia.
(E) Climatic conditions in North America just
before the Ice Age were more conducive to
human habitation than were those in the part
of Eurasia closest to North America at that
time.

Expert123 · 发表于 2011-11-2 09:05:59

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Expert123 · 发表于 2011-11-2 09:07:54

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cdwayne · 发表于 2011-11-5 22:52:15

Conclusion：Thus, since Eurasians did not settle in North America until shortly before the peak of the Ice Age, the first Eurasian settlers in North America probably came from a more distant part of Eurasia.

(A) weakens the conclusion by saying because the projectile is different from any Eurasia type, the first settlers did not come from any part of Eurasia.

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求助一道题

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