单项选择题

The passage is based on the author's _______.

A．experience of the changes
B．admiration of the changes
C．analysis of the changes
D．hope for changes
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单项选择题
By using the phrase stay tuned for good news (Line 5, Para. 3) the author wants us to _______.
A．try and be more optimistic
B．wait for the situation to change for the better
C．expect more positive innovations
D．hope that the good news won't change
单项选择题
The example of photography is used to show _______.
A．how digital technology has replaced traditional film
B．the enormous storage advantages of digital technology
C．how digital technology has improved the quality of production
D．how economical it is to use digital technology since it stores so much
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