求助prep2-31

miachw901304

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?



(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 were 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 for more than a day.

答案C，可是不明白C怎么加强了原文？求NN

NicoleYu

首先必须指出的是，这里问题问的不是对原文的支持，而是能从原文中推出什么结果。

原文比较了两点：Taylor骨头中的砷含量与同期的人相当，而比那些吞下致命剂量砷后仍存活一天的人骨头中的砷含量低

这就说明，如果当时Taylor的症状是由致命剂量的砷造成的，那么其骨头中的砷含量应该比现在测量到的多，因此推出了C选项

xiruiming

呵呵，这道题不是加强了原文吧？是哪个选项被原文加强~ 是求conclusion的题~ 读题目要仔细哦

miachw901304

文意：

T虽然有中A毒的迹象，但是T体内的A毒和正常同时代的人没有区别，而且比吃了1剂A毒的人体内的A毒浓度低

那么就是C中说的T在死的5天前所显示的症状不是由致命的A所引起的。

也就是说文中要表达的意思是T的死与A无关，对吗？？

cheekar

(C) The symptoms that Taylor

began showing five days before his death were not caused by a lethal dose of arsenic.—

Tayler 5天前的症状应该不是由于致命剂量的

A毒素引起。

选C的原因是因为题干最后一句话说Taylor骨头中A毒素的含量比服用致命剂量人的含量低。完全有可能仍然是A中毒，只不过不是服用致命剂量的A中毒，比如慢性中毒之类的，

anyway，这道题我觉得主要是修饰词“致命剂量”吧