问一道PREP里的逻辑题

lakeDZ

The Symptoms that United States president Zachary Taylor 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 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?

A. The symptoms that Taylor began showing five days before his death are consistent with poisoning other than arsenic poisoning

B. Taylor's death was not the result of any kind of poisoning

C. The symptoms that Taylor began showing five days before his death was not caused by a lethal dose of arsenic

D. The symptoms that Taylor began showing five days before his death grew more severe each day

E. It is unusual for a person who has ingested a lethal dose of arsenic to survive more than a day

答案选C，想不通。。。另外黄线部分这个句子不明白。。。。

KennyChenzju

Taylor骨头内砒霜量跟一个服用致命剂量砒霜的人身上发现的砒霜水平相当，而服用致命剂量的人能活过一天，（而Taylor是突然死的），所以断定他不是一次服用致命剂量（慢性中毒的）

为什么说他是突然死的呢？从口气上来说the symptoms showing five days before his death暗示他是暴毙，后人在追查当时死前五天前的症状。这个我也是先猜测，然后去Wiki上确认的。

lakeDZ

明白了，多谢。。。这道题好难啊。。。