A．To show that the technique will not cause fire.B．To h-找考题网

单项选择题

A．To show that the technique will not cause fire.
B．To highlight the dangers of the old method.
C．To explain a step in the new treatment.
D．To emphasize the uniqueness of the new method.

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单项选择题

A．To keep the heat inside.B．To prevent insects from escaping.C．To keep the wood dry.D．To reduce the danger of fire.

A．To keep the heat inside.
B．To prevent insects from escaping.
C．To keep the wood dry.
D．To reduce the danger of fire.

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S5. The author says that when a person persists in reflecting so as to ask the question how, he may at last become a

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