[求助]GWD逻辑 想不通啊想不通！

aruora

When butterfat was considered nutritious and healthful, a law was enacted requiring that manufacturers use the term "imitation butter" to indicate butter whose butterfat content had been diminished through the addition of water. Today, it is known that  the high cholesterol content of butterfat makes it harmful to human health. Since the public should be encouraged to eat foods with lower rather than higher butterfat content and since the term "imitation" with its connotations of falsity deters many people from purchasing products so designated, manufacturers who wish to give reduce-butterfat butter the more appealing name of "lite butter" should be allowed to do so.

Which of the following, if true, most seriously undermines the argument?

c) Some individuals who need to reduce their intake of cholesterol are not deterred from using the reduced-butterfat product by the negative connotations of the term "imitation".

e) Most people deterred from eating "imitation butter" because of its name choose alternatives with a lower butterfat content than this product has.

我选的C，答案是E。
选C的时候，我也注意到了“some”，虽然说一部分人不能代表全部，但是e就更不靠谱了。

Until recently it was thought that ink used before the sixteenth century did not contain titanium. However, a new type of analysis detected titanium in the ink of the famous Bible printed by Johannes Gutenberg 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 analyzed.
This finding is of great significance, since it not only strongly supports the hypothesis that B-36 was printed by Gutenberg but also shows that the presence of titanium in the ink of the purportedly fifteenth-century Vinland Map can no longer be regarded as a reason for doubting the map's authenticity.
The reasonging 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.

c) it is unreasonable to suppose that determination of the date and location of a document's printing or drawing can be made solely on the basis of the presence or absence of a single element in the ink used in the document.

为什么是A不是C 啊！！！

superbblife

来提点看法：第一题

结论是manufacturers who wish to give reduce-butterfat butter the more appealing name of "lite butter" should be allowed to do so

C选项只不过是指出有个别人没有选择不使用reduced-butterfat product，不能weaken结论

E选项意思是大多数因为"imitation butter"这个名字转而选择代替品，而代替品所含的butterfat比之前使用的产品要低，正好weaken了结论，因为即使改了名字，大多数人还是不会购买（因为看含量，不是看名字）

第二题，原文由一个新的analysis推出两个结论：it not only strongly supports the hypothesis that B-36 was printed by Gutenberg but also shows that the presence of titanium in the ink of the purportedly fifteenth-century Vinland Map can no longer be regarded as a reason for doubting the map's authenticity.

A选项正确因为这两个结论会推出两个反方向的结果，即在15世纪，titanium在墨水里的使用是被严格或未被严格限制的

C选项注意determination，原文并未说由titanium的存在就能决定，而只是说会support或者can no longer be regarded as a reason

[此贴子已经被作者于2009/8/15 14:10:11编辑过]

aruora

谢谢~了解了~~