单项选择题

在Eviews软件的基础操作中，对变量X1取对数，生成新变量X2的命令是（）

A．DATA X2=LOG(X1)
B．GENR X2=LOG(X1)
C．GENR X2=D(X1,2)
D．DATA X2=D(X1,2)

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萧统在（）一文中，表达了“丽而不浮，典而不野，文质彬彬，有君子之致”的雅正文学观念。

A. 《答湘东王求文集及书》

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Which of the following expressions is the most complete?
A、The bill of lading without the word “original”; a photocopy or copy of any original bill of lading; a bill of lading with the word “Copy” on it.
B、The bill of lading without the word “original” is a copy bill of lading.
C、A bill of lading after delivery is called a copy bill of lading.
D、The bill of lading that cannot be sent to the bank is called a copy bill of lading.