【正确答案】正确答案：It is a process by which one sound takes on some or all the characteristics of a neighboring sound, a term often used synonymously with "coarticulation". If a following sound is influencing a preceding sound, it is called regressive assimilation; the converse process, in which a preceding sound is influencing a following sound, is known as progressive assimilation.

【答案解析】解析：(考查同化的概念)