Question

【题目】The Great Pyramid was considered (a/ an ) unique building in the 19th century.

Answer 1

【答案】a
【解析】句意：在19世纪大金字塔被认为是独一无二的建筑。unique [juni:k]是以辅音发音开头的单词，所以用a而不用an，所以答案是a。