Question

--Do you know Taiwan, Jenny?

--Yes, of course．Taiwan is ________ island．It belongs to China.

1. A.
   a
2. B.
   an
3. C.
   the
4. D.
   不填

Answer 1

B
本题考查不定冠词a与an的区别。A项用在辅音音素开头的单词前，而B项用在元音音素开头的单词前。单词island第一个音素是元音。故选B。