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题库 / Prep2007E2-CR-31
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?
The symptoms that Taylor began showing five days before his death are consistent with poisoning other than arsenic poisoning.
Taylor's death was not the result of any kind of poisoning.
The symptoms that Taylor began showing five days before his death were not caused by a lethal dose of arsenic.
The symptoms that Taylor began showing five days before his death grew more severe each day.
It is unusual for a person who has ingested a lethal dose of arsenic to survive for more than a day.
ZT在死亡前5天就表现出了和arsenic中毒一样的症状。
验证后发现，他骨头里毒素含量比服下致死量后存活超过一天的人要低。
a,并没有提到其他中毒症状，没法说明是其他中毒而非arsenic中毒
b,没有提及死因
c,可以说明不是致死量导致的症状 → 剂量比致死量要少，自然导致的症状与致死量导致的症状不同
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