单项选择题

Questions 18 to 20 are based on the following passage, At the end of the passage, you will be given 15 seconds to answer the questions.
Now listen to the passage.
Around what time did the university begin to appear

A．Around the 9th century.
B．Around the 13th century.
C．Around the 15th century.
D．Around the 16th century.
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单项选择题
Who first created the networks that later developed into the Internet
A．Some scientists and university students.
B．Big businesses.
C．The U.S. Department of Defense.
D．The U.S. government together with several European governments.
单项选择题
What does the man need from the library
A．A research study written by his professor.
B．Demographic information about people living in Europe.
C．Information on research methods in demographics.
D．A specific geography reference book.
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