单选题
Which of the following shows the proper pronunciation of "boiled" due to assimilation?
【正确答案】
A
【答案解析】考查读音规则。(1)以t、d结尾的动词加-ed后，发[id]音；(2)以清辅音结尾的动词，加-ed后发[f]音；(3)以除t、d以外的浊辅音或元音结尾时，发[d]音。boil读音为
，加-ed后，读音为
，加-ed后，读音为