46. (33987-!-item-!-188;#058&007200)
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?
(A) Due to trade among Native Americans, some European trade goods would have reached the area before the European traders themselves did.
(B) At all camps in the region that have been reliably dated to the late 1620's, remains of European trade goods have been found.
(C) 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.
(D) The first European traders in the area followed soon after the first European explorers.
(E) The site is that of a temporary camp that would have been used seasonally for a few years and then abandoned.
这题做对了~~~但是刚才翻了一下以前的旧帖~~发现有人认为C选项也可以加强~~~我当时首先把C就排除了~~现在看看怎么觉得也有道理~~
请NN帮助解答呀！！！
还有，个人认为A貌似也有点道理~~由于一些trade goods早于traders到达，所以trade goods的到达日期肯定早于1620`s,因此可以根据camps没有发现trade goods，而推断camps不晚于1630~~~是不是由于A中的some削弱了加强作用呢？
疑惑多多！！盼望解答！
A不能加强吧，它是对提及的时间再进一步往前推，这个对于文章结论没有什么意义了。就是说文章已经说在这个地区，1620's时，欧洲人的贸易很活跃，A项不过是把这个时间又给提前了，但论据仍旧没有变化，理由还是这个理由。如果要support的话，应该是从另一方面给出支持的理由。
C为什么可以加强？货物值钱并被保管得很仔细，和文章的结论没有关系吧？
顶一下，我也不太明白这道题，有没人在给出更详细的解答呀？
B为什么对A为什么错呀~~~~
A选项的问题如sophia_cc所说。
C的话由于带了一个as much as possible，因此事实也有可能这个军营是1930年后的遗址、也有E Goods；但是没有保存下来。
因此如果是要“most strengthen”，C没有B好。
没有找到 European trade goods， 很有可能是已经木有了（from loss or destruction）。C在这点上加强了。
所以不理解为何不可选C
(C) 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. 代代表"在過去"被認為很有價值而且被好好保存, 但不代表後來沒有被破壞. 所以有可能在考古學家發現時, 這些trades goods 早已 under loss or destruction . (小弟個人看法,有錯請大家幫忙指正 ^^)
我认为题目要找支持交易是在1620~1630之间活跃,只有B项提到时间1620's--准确，其他项都有时间上的漏洞，可以推前或推后。
A 削弱
B 由结论句得到，是直接加强
C 觉得上无关选项啊
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.
考古学家在密歇根发现了一处遗址，根据激光显示这处遗址应该在1605到1755期间。但是实际上应该不晚于1630，因为在遗址中没有发现欧洲的交易品，并且欧洲交易在1630以后才发生在这一区域。
没有欧洲交易品推出不晚于1630
Which of the following, if true, most strengthens the argument?
(A) Due to trade among Native Americans, some European trade goods would have reached the area before the European traders themselves did.
和这个区域并没直接的关系
(B) At all camps in the region that have been reliably dated to the late 1620's, remains of European trade goods have been found.
正确，在1620年后的遗址中，欧洲商品就出现了。属于异因异果。
(C) 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.
和欧洲商品的价值无关，和遗址没有关系
(D) The first European traders in the area followed soon after the first European explorers.
和欧洲商人什么时候进入无关
(E) The site is that of a temporary camp that would have been used seasonally for a few years and then abandoned.
并不能加强1620这个年代
我不明白,为什么没有欧洲货,就说CAMP一定是在30年前形成的呢? 是否说如果有了欧洲货,就可以是30年后的呢,但是欧洲货不是1620年来的吗，为什么不说是在1620年前的．
1620-1630间有什么因果
(B) At all camps in the region that have been reliably dated to the late 1620's, remains of European trade goods have been found. 1620年之后的就都发现欧洲人的东西，强烈对比，说明没有发现的就是没有欧洲人
(C) 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. 并没有排除就没有保存下来的可能，不是很好
题目假设的关键是：
欧洲货的出现和欧洲人出现有必然联系
(A) Due to trade among Native Americans, some European trade goods would have reached the area before the European traders themselves did. 没有欧洲人来之前它们之间也会交易，能否发现欧洲货和年代无关，削弱了原文，否定了题目假设
(B) At all camps in the region that have been reliably dated to the late 1620's, remains of European trade goods have been found. 1620年之后的就都发现欧洲人的东西，强烈对比，说明没有发现的就是没有欧洲人的年代。肯定了题目假设
(C) 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. 并没有排除就没有保存下来的可能，而且没有说明是否欧洲货出现和欧洲人出现的时间有必然联系，也有可能是native自己倒卖过来的啊，那就和A一样错误了
题目的意思是说1620前有这些东西,1620年后没有,B直接说出了这一点.
A只说了可能有,但是没有说明确的时间,不如B那样明确和坚决(all)
我一开始也选了C，但是后来再看看，觉得would have been是虚拟语气吧。
本应该是被认为是很有价值的，并且保存的很好，但是实际上没有。
哎
AC都是虚拟语气，大家好好看
(A) Due to trade among Native Americans, some European trade goods would have reached the area before the European traders themselves did.干扰项，本应该更早到达，无关
C 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.干扰项，would have been是本被认为，事实不是这样的。Weaken
个人认为 would have done 这里的全部理解为虚拟语气 有点牵强..
首先虚拟语气这种说法,貌似是中国人发明...
eva808 发表于 2007-8-17 11:14
盼望解答啊~~~
aidi_more 发表于 2008-8-19 09:22
(B) At all camps in the region that have been reliably dated to the late 1620's, remains of European ...
ivyfeng 发表于 2009-10-6 11:08
呵呵，讨论的真热烈。个人是这样认为的。首先，针对大家说的1920-1930空挡的事，请注意，这正是GMAT的细心 ...
takizama 发表于 2007-11-29 23:06
(C) The first European trade goods to reach the area would have been &n ...
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