题目内容

16．--What's this？--It's ___________z．（　　）
A．aB．anC．不填

分析 -这是什么？
-它是一个"z"．

解答 答案：A
a和an是不定冠词，表示泛指的一，一个，a用于以辅音音素开头的单词或字母前，an用于以元音音素开头的单词或字母前．此处的z发音为zi：，以辅音音素开头，且由this可知，答语意思应该是它是一个z，所以选A．

点评 此题要了解a和an的区别，并结合题干和选项选择正确的答案．

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