大全B-7，估计因为太简单了，所以没人问..

June is taller than Kristin.

Letty is taller than Maria.

Maria is shorter than Nancy.

Kristin and Nancy are exactly the same height.

If the information above is true, which of the following must also be true?

(A) Letty is taller than Nancy.

(B) Letty is taller than June.

(C) Kristin is shorter than Letty.

(D) June is taller than Maria.（D）

(E) Kristin is shorter than Maria.

设：June->A; Kristin->B; Letty->C; Maria->D; Nancy=Kristin=B

则：A > B; C > D; D < B

答案为：A > D

这怎么能推出来的？没说B 与C的关系啊？

我怎么都不明白...

J>K,L>M, N>M, K=N

-->J>N

because J>N N>M so J>M

D is the right answer

J为什么 > N？？

脑子发锈了...