Until recently it was thought that ink used before the sixteenth century did not contain titantium.However a new type of analysis detected titanium in the ink of the famous Bible printed by J G and in that of another fifteenth-century Bible known as B-36 though not in the ink of any of numerous other fifteenth-century books analysed.This finding is of great significance since it not only strongly supports the hypothesis that B-36 was printed by G but also shows that the presence of titatium in the ink of the purportedly fifteenth century V M can no longer be regarded as a reason for doubting the map's authenticity.
The reasoning in the passage is vulnerable to criticism on the ground that
A. the results of the analysis are interpreted as indicating that the use of titanium as an ingredient in fifteenth-century ink both was and was not extremely restricted.
B.if the technology that makes it possible to detect titanium in printing ink has only recenty become available it is unlikely that printers or artists in the fifteenth century would know whether their ink contained titanium or not.
C.it is unreasonable to suppose that determination of the date and location of document's printing or drawing can be made solely on the basis of the presence or the absence of a single element in the ink used in the document.
D.both the B-36 bible and the V Map are objects that can be appreciated on their own merits whether or not the precise date of their creation or the identity of the person who made them is known.
E.the discovery of titanium in the ink if the V Map must have occured before titanium was discovered in the ink of the G B and the B-36 Bible
该题的答案是A，我选的是C
我这道题说实话没看懂
所以请高手在做出的同时解释一下
Where is your source of this question?...Please follow 标题格式 for everybody's convenience. Thanks.
Until recently it was thought that ink used before the sixteenth century did not contain titantium.However a new type of analysis detected titanium in the ink of the famous Bible printed by J G and in that of another fifteenth-century Bible known as B-36 though not in the ink of any of numerous other fifteenth-century books analysed.This finding is of great significance since it not only strongly supports the hypothesis that B-36 was printed by G but also shows that the presence of titatium in the ink of the purportedly fifteenth century V M can no longer be regarded as a reason for doubting the map's authenticity.
This is a problem that ask you to find the logical flaw of the argument.
The reasoning in the passage is vulnerable to criticism on the ground that
A. the results of the analysis are interpreted as indicating that the use of titanium as an ingredient in fifteenth-century ink both was and was not extremely restricted.
This is right answer.
Frist, the conclusion try to conclude that B-36 was printed by J G. Which is “use of titanium as an ingredient in fifteenth-century ink was extremely restricted” This is base on the assumption that only JG use Titatium in his ink.
Second, the conclusion also try to conclude that “presence of titatium in the ink of the purportedly fifteenth century V M can no longer be regarded as a reason for doubting the map's authenticity”, in order to make this conclusion valid, you have to make the assumption that all ink in 15 century has titantium.
B.if the technology that makes it possible to detect titanium in printing ink has only recenty become available it is unlikely that printers or artists in the fifteenth century would know whether their ink contained titanium or not.
C.it is unreasonable to suppose that determination of the date and location of document's printing or drawing can be made solely on the basis of the presence or the absence of a single element in the ink used in the document.
D.both the B-36 bible and the V Map are objects that can be appreciated on their own merits whether or not the precise date of their creation or the identity of the person who made them is known.
E.the discovery of titanium in the ink if the V Map must have occured before titanium was discovered in the ink of the G B and the B-36 Bible
Second, the conclusion also try to conclude that “presence of titatium in the ink of the purportedly fifteenth century V M can no longer be regarded as a reason for doubting the map's authenticity”, in order to make this conclusion valid, you have to make the assumption that all ink in 15 century has titantium.
我觉得，这个只能表明"some ink in 15th century had titatium", 并不能得出你所说的"all ink in 15 century has titantium"，也就是说，还是不能说明(A)这个选项是正确的
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