单项选择题

The author implies that excitement over the digital revolution may be hindered by _______.

A．ignorance of the technology
B．robust economic growth
C．the economic realities of its practicality
D．economic problems of hi-tech companies
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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
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
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