单项选择题

Which of the following can best sum up the passage

A．Advantages and disadvantages of automation.
B．Labor and the effects of automation.
C．Unemployment benefit plans and automation.
D．Social benefits of automation.
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单项选择题
Which of tile following best summarizes the main idea of the passage
A．Musical instruments developed through the years will sooner or later be replaced by computers.
B．Music cannot be passed on to future generations unless it is recorded.
C．Folk songs cannot be spread far unless they are printed on music sheets.
D．The development of music culture is highly dependent on its material aspect.
单项选择题
Research into the material culture of a nation is of great importance bucause ______.
A．it helps produce new cultural tools and technology
B．it can reflect the development of the nation
C．it helps understand the nation's past and present
D．it can demonstrate the nations civilization
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