单项选择题

Questions 15 to 18 are based on the passage you have just heard. How long does the training period last

A．Two to four months.
B．About three weeks.
C．At least half a year.
D．Two years or more.
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单项选择题
Why is there a hole in the weaverbird’s nest
A．To let in the sunshine.
B．To serve as its door.
C．To keep the nest cool.
D．For the bird to lay eggs.
单项选择题
The author believes that myths ______.
A．have nothing to do with religion
B．have to do with science, religion and entertainment
C．are pure entertainment with no religious content
D．contain very modern ideas
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