单项选择题

A．Physical chemistry.
B．Life experience.
C．Introduction to Science.
D．Biology.
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Directions: Write a notice. Your class is going camping. Write a notice with a list of Dos and Don’ts. Think of the following things: where to put up your tents shade washing up bathing lighting fires cooking boiling water storing food animals toilets You can practise the language points which you have studied in this unit.
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