Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
After dogs, the horse has the closest（ ）with man. (relation)
【正确答案】：RELATIONSHIP
【题目解析】：
本题考查的是常用名词的衍生词。
由the closest可知，空缺处应填名词，“close亲近”应与“关系”搭配，relation加后缀ship衍生出relationship"(带有感情的)关系"。
句意：除了狗之外，马跟人类有最亲近的关系。