请教OG-46

gmatjh

46. Kale has more nutritional value than spinach. But since collard greens have more nutritional value than lettuce, it 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:

Answer : (A) Collard greens have more nutritional value than kale.

Q1: it follows that…

       it 指 which one?

Q2 : 题目nutritional value的关系是不是

        K>S , C>L, K>L

        如果是以上的关系 为何A对       请各位大牛指点

bryan0806

1. it 只是引导that子句而已

2. K>S , C>L, K>L(结论)

(A)C>K 加上K>S , C>L,怎能推出K>L?

gmatjh

K>L(结论) : 我懂了

感谢指点