单项选择题

What is the best title for the passage

A．Oil Refining: A Historical Perspective
B．The California Gold Rush: Get Rich Quickly
C．Private Property: Trespassers Will Be Prosecuted
D．Kerosene Lamps: A Light in the Tunnel

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单项选择题

Which of the following words could best replace the word one (Underlined)

A．Oil.
B．Door.
C．Store.
D．Product.

单项选择题

What is the passage mainly about

A．The scientific revolution in the seventeenth century.
B．Reasons that chemistry developed slowly as a science.
C．The practical aspects of chemistry.
D．Difficulties of organizing knowledge systematically.