单项选择题

According to the passage, which of the following words can be used to describe an ambassador's work

A．Extravagant.
B．Exciting.
C．Trivial.
D．Demandin
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单项选择题
Future generations may not find the digital material any more because of all of the following EXCEPT______.
A．the out-of-date preservation method
B．the problem concerning intellectual property rights
C．the nature of short-time online existence 9f the digital information
D．the difficulty in storing vast amount of information available online
单项选择题
According to the passage, what people need to do is to______.
A．find ways to make future access to the material possible
B．use more traditional material rather than digital one
C．archive digital publications instead of paper ones in libraries
D．preserve today's pervasive form of communication, e-mails
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