请问下面这些单词前面是加a还是an
题目
请问下面这些单词前面是加a还是an
cleaner
actress
driver
artist
singer
accountan
engineer
salesman
doctor
actor
答案
前面用a的单词：cleaner driver singer salesman doctor（辅音开头）
前面用an的单词：actress artist accountan engineer actor (元音开头）
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