单项选择题

A．Because they did not eat other animals.
B．Because they were useful for protection.
C．Because they were good hunters.
D．Because they always obeyed their masters.
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单项选择题
A．No, all the rooms are taken.B．Yes, there is a double room.C．Yes, there are some spare rooms.D．Yes, there is a single room.
A．No, all the rooms are taken.
B．Yes, there is a double room.
C．Yes, there are some spare rooms.
D．Yes, there is a single room.
单项选择题
A．For protection against other animals,B．For protection against other dogs.C．Just for fun.D．For the purpose of guarding the hous
A．For protection against other animals,
B．For protection against other dogs.
C．Just for fun.
D．For the purpose of guarding the hous
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