【正确答案】：
PERFECT HOMONYMS AND POLYSEMANTS ARE FULLY IDENTICAL WITH REGARD TO SPELLING AND PRONUNCIATION. THE FUNDAMENTAL DIFFERENCE BETWEEN THEM LIES IN THE FACT THAT THE FORMER REFERS TO DIFFERENT WORDS WHICH HAPPEN TO SHARE THE SAME FORM AND THE LATTER IS THE ONE AND SAME WORD WHICH HAS SEVERAL DISTINGUISHABLE MEANINGS.
【题目解析】：本题考查homonyms（同形同音异义词）和polysemants（多义词）的区别。同形同音异义词和多义词在拼写和发音上完全相同。它们之间的根本区别在于前者指的是恰好具有相同形式的不同单词，而后者是指具有多种不同含义的同一个词。