To preserve for a test．,To tell her if the notes are ac-找考题网

单项选择题

A．To preserve for a test.
B．To tell her if the notes are accurate.
C．To help him explain the information to his roommate.
D．To help him write a paper.

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A．Helen is quiet.B．Helen is talkative.C．Helen is sociable.D．Helen is active.

A．Helen is quiet.
B．Helen is talkative.
C．Helen is sociable.
D．Helen is active.

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A．It affects the growth of trees.B．It has been increasing since the Ice Age.C．It is determined by the chemicals in the air.D．It follows a certain cycle.

A．It affects the growth of trees.
B．It has been increasing since the Ice Age.
C．It is determined by the chemicals in the air.
D．It follows a certain cycle.

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