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题库 / Prep2007E1-CR-46
Archaeologists in Michigan have excavated a Native American camp near Dumaw Creek. Radiocarbon dating of animal bones found at the site indicates that the camp dates from some time between 1605 and 1755. However, the camp probably dates to no later than 1630, since no European trade goods were found at the site, and European traders were active in the region from the 1620's onward.
Which of the following, if true, most strengthens the argument?
Due to trade among Native Americans, some European trade goods would have reached the area before the European traders themselves did.
At all camps in the region that have been reliably dated to the late 1620's, remains of European trade goods have been found.
The first European trade goods to reach the area would have been considered especially valuable and preserved as much as possible from loss or destruction.
The first European traders in the area followed soon after the first European explorers.
The site is that of a temporary camp that would have been used seasonally for a few years and then abandoned.
C: 1) 结论是no later than [1630], 欧洲贸易从1620开始活跃，所以不必然是the FIRST European goods; 2) 从argument看，题干的逻辑是①没发现EG+②1620后EG贸易活跃=>site在1620前，即使不考虑1)，C在削弱①，而D是 所有1620后的site=>都有发现EG#其实我觉得这个很牵强这个逆命题成立为什么strengthen正命题？.
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