【正确答案】/t/ and /n/ are both consonants and alveolar ones that is to say, they are made with tongue tip or blade and the alveolar ridge．/t/ is an alveolar stop, while /n/ is an alveolar nasal．

【答案解析】[解析] 本题考查的是辅音的发音位置和发音方式。题干中的两个辅音都是齿龈音，不同之处在于/t/是闭塞音，而/n/是鼻音。