单项选择题

A．It indicated a change in the status of literate people.
B．It indicated a change in the nature of reading.
C．It indicated an increase in the number of books.
D．It indicated an increase in the average age of readers.
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单项选择题
A．Because they are not easily burned and can last longer.B．Because marble adds artistic value to ancient buildings.C．Because they are adaptable to industrial use.D．Because they are cheaper.
A．Because they are not easily burned and can last longer.
B．Because marble adds artistic value to ancient buildings.
C．Because they are adaptable to industrial use.
D．Because they are cheaper.
单项选择题
A．NonethelessB．ThereforeC．HoweverD．Besides
A．Nonetheless
B．Therefore
C．However
D．Besides
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