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单项选择题

Questions 14 - 16 are based on a talk of email and instant messages. You now have 15 seconds to read Questions 14 - 16. How many email messages did Americans send in 1999

A．2.2 billion.
B．2.2 million
C．293 million.
D．293 billion.
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单项选择题Whom is the talk addressed to

A．Freshmen in the university.
B．Teachers of different backgrounds.
C．Students and teachers from computer college.
D．Regular MA students and in-service teachers.

单项选择题What is the topic of the man’s research paper

A．Egypt today.
B．Egyptian ancient history.
C．Egypt in 900-999.
D．Travel in Egypt.

单项选择题Which of the following about the 97% population is true

A．The data 'about the 97% population is rich.
B．Historians had a set of numbers indicating the date of their birth, marriage and death.
C．The 97% population had nothing that is worth of recording.
D．The data historians had presented a vivid picture of the 97% population.

单项选择题How is in the investigations carried out by historians in 1950s different from previous studies

A．They had new findings.
B．They expanded the period defined as pre-industrial Europe.
C．They investigated the common people who took up the majority of the population.
D．The investigations were on the kings, generals ,judges, nobles, bishops, and local magnates.

单项选择题According to the text, Case history is

A．a study that researches in the records of legal courts.
B．a discipline founded by Le Roy Ladurie.
C．the only study that use the records of legal courts.
D．based on the data obtained from the records of legal courts.