听第10段材料，回答第17-20小题．
17．What does the speaker mainly talk about？
A．The history of cola．
B．Soft-drink production．
C．Using cola as a drug．
18．How was cola originally sold？
A．As a soft drink．
B．As a medicine．
C．As a cooking oil．
19．Why did the speaker mention John S．Pamberton？
A．He sold cola to doctors．
B．He was a drugstore clerk．
C．He developed cola as a drug．
20．How was the drug made into a soft drink？
A．By mixing it with special oils
B．By heating it．
C．By adding soda water．
【考点】听短文．
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发布：2024/5/27 14:0:0组卷：0引用：1难度：0.5
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