单项选择题

From the first paragraph, we can infer that the author is most probably ______.

A．an expert
B．a geographer
C．a journalist
D．a scientist
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单项选择题
According to the passage, the greatest library of ancient times was set up by ______ in Egypt.
A．Greeks
B．Semitic Hyksos
C．Egyptians
D．unknown
单项选择题
Which of the following statements about the Nile Delta is UNTRUE
A．It is among the world's most intensely cultivated lands.
B．It is being eaten away by Cairo.
C．It is the world's highest use of fertilizer.
D．It is famous for its agricultural wealth.
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