单项选择题

A．Because they did not eat other animals.
B．Because they were useful for protections.
C．Because they always obeyed their masters.
D．Because they were good hunters.
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单项选择题
A．The small bowl was put above the large bowl.B．The large bowl was put above the small bowl.C．The small bowl was put inside the large bowl.D．The large bowl consisted of two equal parts.
A．The small bowl was put above the large bowl.
B．The large bowl was put above the small bowl.
C．The small bowl was put inside the large bowl.
D．The large bowl consisted of two equal parts.
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