单项选择题

A．A community of plants.
B．A community of animals.
C．The study and understanding of plants and animals.
D．The interacting physical factors of the environment.
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单项选择题
A．Keeping her topic focused and supporting her opinions with facts.B．Reading extensively and collecting as much reference as possible.C．Avoiding sensitive political points and seeking more power.D．Having discussions with employees and giving them more freedom.
A．Keeping her topic focused and supporting her opinions with facts.
B．Reading extensively and collecting as much reference as possible.
C．Avoiding sensitive political points and seeking more power.
D．Having discussions with employees and giving them more freedom.
单项选择题
A．Billy.B．Peter.C．The man’s brother.D．The woman’s brother.
A．Billy.
B．Peter.
C．The man’s brother.
D．The woman’s brother.
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