1. Dr. Sayre’s lecture recounted several little-known episodes in the relations between nations that illustrates what is wrong with alliances and treaties that do not have popular support.

(A) relations between nations that illustrates

(B) relation of one nation with another that illustrates

(C) relations between nations that illustrate

(D) relation of one nation with another and illustrate（B）

(E) relations of nations that illustrates

正确答案B

C选项中的between不就代表两个事物的关系吗？因此不就比B one nation with another更简练些吗？

nations并不代表就是two nations.

而且relations还是复数，如果是two nations也不应该有relations吧？

thanks a lot !!!