Ｈｅｐｌ Ｐｌｅａｓｅ

dakuandakuan

The symptoms that United States President Zachary Taylor began showing five days before his death are consistent with arsenic poisoning. Recent examination of Taylor's bones, however, revealed levels of arsenic comparable to those found in the bones of Taylor's contemporaries. These levels are much lower than the levels of arsenic that remain in the bones of arsenic poisoning victims who live for more than a day after ingesting a lethal dose of the poison.

Which of the following is most strongly supported by the statements given?
AThe symptoms that Taylor began showing five days before his death are consistent with poisoning other than arsenic poisoning.
BTaylor's death was not the result of any kind of poisoning.
CThe symptoms that Taylor began showing five days before his death were not caused by a lethal dose of arsenic.
DThe symptoms that Taylor began showing five days before his death grew more severe each day.
EIt is unusual for a person who has ingested a lethal dose of arsenic to survive for more than a day.



答案是Ｃ　　是选择的A

lifeisanart

总统ZT死前表现出来的症状跟砒霜中毒的症状很像。然而最近检查发现，ZT骨头里面含有的砒霜的量跟他同时代的其他人相差无几。
结论：ZT的这个含量远低于那些因服用致命剂量砒霜但残活了超过一天的人骨头里的砒霜含量
要加强。
选项A, ZT死的五天前表现症状跟那些不是砒霜中毒但是是其他中毒的症状一致。（这个并不能增加对结论的相信概率，因为症状相似本身就是题目里面的一个故意设置的flaw, 跟原文矛盾）
C，症状相似但并不是砒霜中毒。（增加对结论的相信概率，填补了这个gap)
所以选C