单选题 Iceland has the oldest parliament, which goes as far back to 930 A.D. when Althing, the legislative {{U}}organization{{/U}}, was established.

【正确答案】 C

【答案解析】[分析] 名词辨析。 A．office办公室；(英)政府机关，部；B．adobe指砖坯砌成的房子；C．assembly集合，集会；a legislative assembly指立法机关；D．building建筑物；因此C为答案。