单选题
Concerning the drug quinine, which of the following is NOT true?
A、
Originally, quinine was made from some tree bark.
B、
Quinine is used to cure malaria.
C、
Now, the cinchona tree is no longer the only source of quinine.
D、
It was the Spanish people who first used quinine as a medicine.
【正确答案】
D
【答案解析】
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