单选题
In which year was aspirin first sold?
A、
This year.
B、
1899.
C、
1915.
D、
The 19th century.
【正确答案】
B
【答案解析】
[解析] 根据文章第三段第一句“Although aspirin was firsts sold by a German company in 1899”可得出正确答案。
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