From its plan layout, appearance share and ornamental features, it B considered as one of the oldest works of modern architecture in China.

从平面布局、外观造型和装饰特征来判断，该大楼是中国最早的现代主义建筑作品之一。

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The main conclusion is as follows:1. The daily returns of china' s B-share markets are random walk, the markets are weak-form efficient markets.

最后，得出的主要结论如下：1． 我国的B股市场的日收益率呈随机游走状态，已经是弱式有效市场。

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