单项选择题

A. By mixing it with special ingredients.
B. By heating it before drinking.
C. By adding soda water.
D. By combining it with different flavors.

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A. The medicinal effects of cola.
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C. A recipe for a soft drink.
D. Soft-drink production.

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A. He was a drugstore clerk.
B. He developed the cola syrup.
C. He sold cola to doctors.
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单项选择题

A. By mixing it with special ingredients.
B. By heating it before drinking.
C. By adding soda water.
D. By combining it with different flavors.