The word "denaturalization" can be broken down into "de-", "nature", "-al", "-ize", "-ation" ,each having meaning of its own. This minimal meaningful units are known as （ ）.
A、morphemes
B、allomorphs
C、root
D、stem
【正确答案】：A
【题目解析】：考察词素的基本定义。语言中表达意义的最小单位为词素。denaturalization可以分为de-, nature, -al, -ize, -ation。de-否定前缀表示非…；nature是自由词素表示自然；-al形容词后缀表示...的；-ize动词后缀表示...化；-ation名词后缀，表示行为，过程，结果。这5个部分都有各自的含义。
