1. Assimilation(南开大学2010研；武汉大学2008研；上海交大2005研) 【答案】It is a process by which one sound takes on some or all the characteristics of a neighboring sound. It is often used synonymously with coarticulation. Nasalization, dentalization and, velarization are all instances of assimilation. There are two possibilities of assimilation: if a following sound is influencing a preceding sound, it is regressive assimilation; the converse process, in which a preceding sound is influencing a following sound, is known as progressive assimilation. For example, in “mink”, “n”, which is originally pronounced as /n/, will be velarized by the following “k”/k/, and therefore the word will be pronounced as [m??k].查看答案 2. Distinctive features of speech sound