【正确答案】：
FREE MORPHEMES HAVE COMPLETE MEANINGS IN THEMSELVES AND CAN BE USED AS FREE GRAMMATICAL UNITS IN SENTENCES. THEY ARE IDENTICAL WITH NEW WORDS. 
【题目解析】：自由词素本身具有完整的意义，可以作为句子中的自由语法单位。它们与新词相同。
FREE MORPHEMES HAVE COMPLETE MEANINGS IN THEMSELVES AND CAN BE USED AS FREE GRAMMATICAL UNITS IN SENTENCES. THEY ARE IDENTICAL WITH NEW WORDS.