【正确答案】正确答案：Compound refers to the word which consists of more than one lexical morpheme, or the way to join two separate words to produce a single form.(2 points)An endocentric compound is a compound whose distribution is functionally equivalent, or approaching equivalence, to one of its constituents, which serves as the center or the head of the whole. As for the exocentric compound, it is a construction whose distribution is not functionally equivalent to any of its constituents, which indicates there is no noticeable center or head in the compound.(2 points)The endocentric compounds are as follows;airplane, dog food, policeman , sky-blue, while the exocentric compounds are pickpocket, redhead, and walkman.(2 points)

【答案解析】解析：考查向心复合词和离心复合词。复合词指由一个以上的词汇语素构成的词，或者由两个独立的词连接起来构成的新词。按照不同的组成结构，复合词可分为向心复合词和离心复合词，向心结构中包含一个作为整个结构中心或核心的成分，而离心结构则没有明显的核心。