单项选择题

　Questions 20 to 22 are based on the conversation you have just heard.
（）

A．Based on the poll of public opinions.
B．By interviewing people who file complaints.
C．By analyzing the domestic and international situation.
D．Based on public expectations and editors’ judgment.

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单项选择题

A．Change to a more exciting channel.B．See the movie some other time.C．Go to bed early.D．Stay up till eleven.

A．Change to a more exciting channel.
B．See the movie some other time.
C．Go to bed early.
D．Stay up till eleven.

单项选择题

（）

A．The average life span was less than 50 years.
B．It was very common for them to have 12 children.
C．They retired from work much earlier than today.
D．They were quite optimistic about their future.

Questions 20 to 22 are based on the conversation you have just heard. （）

　Questions 20 to 22 are based on the conversation you have just heard.
（）