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题库 / OG2017V-CR-188
Commemorative plaques cast from brass are a characteristic art form of the Benin culture of West Africa. Some scholars, noting that the oldest surviving plaques date to the 1400s, hypothesize that brass casting techniques were introduced by the Portuguese, who came to Benin in 1485 A.D. But Portuguese records of that expedition mention cast-brass jewelry sent to Benin's king from neighboring Ife. So it is unlikely that Benin's knowledge of brass casting derived from the Portuguese.
Which of the following, if true, most strengthens the argument?
The Portuguese records do not indicate whether their expedition of 1485 included metalworkers.
The Portuguese had no contact with Ife until the 1500s.
In the 1400s the Portuguese did not use cast brass for commemorative plaques.
As early as 1500 A.D., Benin artists were making brass plaques incorporating depictions of Europeans.
Copper, which is required for making brass, can be found throughout Benin territory.
records of that expedition，指的是P人到B国去的那次活动。P记录了这件事，虽然不证明P的人不会CB，但至少证明I的人是会CB的，所以是不能确定到底是P还是I教会了B
明明就是个果因推理。。。
C 不用做纪念碑，不代表没这技术
因果推理
因为记录显示铜珠宝从LFE送到了国王。。所以这个知识不是起源于葡萄牙的 加强
A 无关
B 1500s前葡萄牙和LFE都没交流。加强，说明和葡萄牙没太大关系
C 讨论用处。无关
D 没提到葡萄牙
E copper发现位置 无关
加强：贝宁有黄铜技术——来源于葡萄牙
葡萄牙的记录记载黄铜珠宝来源于I——贝宁的黄铜技术来源于I
加强：黄铜来自于I而不是葡萄眼：
建立在葡萄牙和I之间的关系：直到1500年葡萄牙和I都没有联系，那就不会使I——葡萄牙——贝宁这个传导机制了
而是I直接传给了贝宁
错选C 技术啊 技术 不一定用在这啊
原文是hypothesize that brass casting techniques were introduced by the Portuguese，C是Portuguese did not use cast brass for commemorative plaques，所以brass casting techniques还是可能被引进了，只是不是用来做commemorative plaques
排除他因：葡萄牙人和Ife联系的可能
D/E无关选项，A选项起到undermine the argument的作用。C选项，在1400s，葡萄牙人没有使用黄铜铸造技术铸造纪念碑，这并不能说明葡萄牙人没有在1400s将黄铜铸造结束传入Benin，不能起到strengthen the argument的作用。B选项，直到1500s，葡萄牙人都没有和Ife人接触过，而文中说cast-brass jewelry sent to Benin's king from neighboring Ife。因此足以说明，knowledge of brass-casting 不是来自葡萄牙。
因果推理，
因：cast-brass jewelry sent to Benin's king from neighboring Ife
果：nowledge of brass casting not derived from the Portuguese.
C因果无联系加强结论