og10-46 nobody ask before

rxh28

46. Kale has more nutritional value than spinach. But since collard greens have more nutritional value than lettuce, if follows that kale has more nutritional value than lettuce.

 

Any of the following, if introduced into the argument as an additional premise, makes the argument above logically correct EXCEPT:

A. Collard greens have more nutritional value than kale

B. Spinach has more nutritional value than lettuce

C. Spinach has more nutritional value than collard greens

D. Spinach and collard greens have the same nutritional value A

E. Kale and collard greens have the same nutritional value

could  somebody explain the meaning of this question?thanks a lot

lukeleng

就当成数学题好了

kale=K

spinach=S

Collard Greens=C

lettuce=L
 

已知Ｋ＞Ｓ，Ｃ＞Ｌ

下面除哪个条件外，能使Ｋ＞Ｌ成立？

kale羽衣甘蓝, 不结球甘蓝
Collard Greens,绿色的羽衣甘蓝

spinach 菠菜

lettuce 莴苣

　

A. Collard greens have more nutritional value than kale C>K,( 已知Ｋ＞Ｓ，Ｃ＞Ｌ),不能证明Ｋ＞Ｌ成立

B. Spinach has more nutritional value than lettuce S>L( 已知Ｋ＞Ｓ，Ｃ＞Ｌ),Ｋ＞Ｌ成立

C. Spinach has more nutritional value than collard greens S>C,( 已知Ｋ＞Ｓ，Ｃ＞Ｌ),Ｋ＞Ｌ成立

D. Spinach and collard greens have the same nutritional value
      S=C,,( 已知Ｋ＞Ｓ，Ｃ＞Ｌ),Ｋ＞Ｌ成立

E. Kale and collard greens have the same nutritional value K=C,,( 已知Ｋ＞Ｓ，Ｃ＞Ｌ),Ｋ＞Ｌ成立

[此贴子已经被作者于2007-10-8 13:02:41编辑过]

reanyka

lukeleng 发表于 2007-10-8 12:00
就当成数学题好了kale=Kspinach=SCollard Greens=Clettuce=L  已知Ｋ＞Ｓ，Ｃ＞Ｌ下面除哪个条件外， ...

谢谢，终于明白了