请教大家：加强与假设的区别，与feifei-80有关

Dreamsgirl

80. Advertisement: Clark
brand-name parts are made for cars manufactured in this country. They satisfy
all of our government automotive tests-the toughest such tests in the world.
With foreign-made parts, you never know which might be reliable and which are
cheap look-alikes that are poorly constructed and liable to cost you hundreds
of dollars in repairs. Therefore, be smart and insist on brand-name parts by Clark for your car.

    The argument requires the assumption that
    

 

    

A.       
Clark parts are available only in this country

    

B.       
foreign-made
arts are not suitable for cars manufactured in this country

    

C.       
no
foreign-made parts satisfy our government standards

    

D.      
parts that
satisfy or government standards are not as poorly constructed as cheap foreign
made parts

    

E.       
if parts
are made for cars manufactured in our country, they are not poorly constructed

答
案是D，我选的E，错了……

之前看过以前NN的解释是：

将C取非：有外国PARTS满足我国标准。原文结论（brand-name parts by
Clark 是可靠的，应买它）一样成立。故不是ASSUMPTION。

    

将D取非：满足我国标准，一样是烂货。原文结论不能成立。故为ASSUMPTION

而E是加强，因为取非不削弱

然后，有人说：加强与assumption的区别：

加强和assumption的区别在于，assumption取非后对结论是削弱的作用，而加强取非后对结论没任何作用。

我觉得好像挺对的，但是，紧接着有人就说这句话不对…………

搞得我现在也很晕………………

    
    

请大家看一看，帮忙解答一下，到底加强与assumption得区别在哪里。

[此贴子已经被作者于2009/10/9 19:59:03编辑过]

Dreamsgirl

谢谢楼上的解答！