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.
单项选择题
A．People continued to explore new lands.B．People started to make life better.C．People stopped making inventions.D．People started to explore more land.
A．People continued to explore new lands.
B．People started to make life better.
C．People stopped making inventions.
D．People started to explore more land.
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