历史发展的每一个阶及都会留下特殊印记,并成为历史见证。下列信息按先秦、汉、唐、宋朝排列正确的是①竹筒隶书一牛挽犁素纱蝉衣水排②心学文人画《萍洲可谈》商业街柳词③雕版印刷《春望》釉下彩绘海上丝绸之路坊市④刀形币《小雅》烽火工艺青铜鼎士
A.①④②③
B.②③①④
C.④①②③
D.④①③②

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　　正确答案

“故宫于1925年成为一个博物馆，从那时起，就一直向公众开放。”
The Imperial Palace turned into a museum in 1925, since when it has been opening to the public.
或：
The Imperial Palace became a museum in 1925, since when it has been opening to the public.

个人认为用过去时加一个完成进行时的从句更加贴合原句的意思。

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　　解析同上