单项选择题

He was concerned only with mundane matters, especially the daily stock market quotations.

A．rational
B．obscure
C．worldly
D．eminent
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单项选择题
The market for processor chips is now a two-horse race, and Intel and AMD will probablyalternatein technical leadership, suggests a research firm.
A．get over
B．take turns
C．concede
D．stumble
单项选择题
In the Han Dynasty, the royal government sent special envoys to the western countries todisseminatethe Chinese culture.
A．spread
B．disclose
C．analyze
D．deliver
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