There is __ art room in the building A.a B.ab C.the D.----
问题描述：
There is __ art room in the building A.a B.ab C.the D.----
答
an
答
b
答
应该是an，应为这里强调数量“一个”，应用不定冠词，art为原音开头，应用an.
答
B. an
答
答案：B an
art 开头的是元音音素,冠词用an.