问题
单项选择题
Aspirin was invented in ______
A．the 20th century
B．the 19th century
C．ancient Greece
D．ancient Germany
答案
参考答案：B
解析：[分析] 细节题型。 见文章第三段首句：Although aspirin was first sold by a German company in 1899， it has been around much longer than that．和同段倒数第三句：During the 19th century，there was a great deal of experimentation in Europe with this chemical，and it led to the introduction of aspirin．选项B正确。