单项选择题

In which year was aspirin first sold

A．This year.
B．1899.
C．1915.
D．The 19th century.
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单项选择题
What does that , the last word in the last paragraph refer to
A．Aspirin crashed in milk or orange juice.
B．Milk.
C．Water.
D．Aspirin.
单项选择题
What does this passage mainly discuss
A．The effectiveness and safety of aspirin.
B．The functions of aspirin.
C．The development and the effectiveness and side effects of aspirin.
D．The 20th century wonder drug -- aspirin.
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