单项选择题

Passage One Questions 26 to 28 are based on the passage you have just heard.

A．4,000 years ago.
B．3,000 years ago.
C．2,000 years ago.
D．1,000 years ago.
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B
单项选择题
A．For protection against other dogs.B．For protection against other animals.C．Just for fun.D．For the purpose of guarding the house.
A．For protection against other dogs.
B．For protection against other animals.
C．Just for fun.
D．For the purpose of guarding the house.
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