Nowadays the Gaelic language，which is an ancient____，is still he

Nowadays the Gaelic language，which is an ancient____，is still heard in the Highlands and the Western Isles.
A、Scottish language
B、English language
C、Irish language
D、Celtic language
【正确答案】：D
【题目解析】：本题考查英国语言的发展。现在的盖尔语是古老的塞尔特语。