单项选择题

A．To demonstrate an experiment.
B．To explain the grading procedures.
C．To inform the students of the safety measures.
D．To tell the students how to use the safety equipment.
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单项选择题
A．Tell her what to study for the history test.B．Write a favorable letter of recommendation.C．Advise her about how to run an election campaign.D．Suggest a topic for a research paper.
A．Tell her what to study for the history test.
B．Write a favorable letter of recommendation.
C．Advise her about how to run an election campaign.
D．Suggest a topic for a research paper.
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