The word "denaturalization" can be broken down into "de-", "nature", "-al", "-ize", "-anon", each having meaning of its own. These minimal meaningful units are known as ______.
A、morphemes
B、allomorphs
C、root
D、stem
【正确答案】：A
【题目解析】：本题需要对第三章英语构词法中的词素、词素变体、词根和词干四个概念准确理解。了解词素是一个整体，就能准确的选出A词素。