单项选择题

Why are publishers making their books freely available

A．They want to make money.
B．They don' t like to lose their audience.
C．They are competing for fun.
D．They try to win more freedom.
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单项选择题
What method does the author mainly use in the passage to achieve better effects
A．Examples.
B．Listing.
C．Comparisons and listing.
D．Analysis and examples.
单项选择题
The electronic version of newspapers has all the following advantages except that______
A．it can be carried around
B．it can be read in many places
C．it can be immediately accessed
D．it requires little delivery cost
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