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模块七 Module VII Improving our lives《Reading(1)：Two life-saving medicines》优质课PPT课件下载
History of aspirin
①. The shops began selling aspirin tablets.
②. It was found aspirin could help lengthen people’s lives.
③. A juice containing salicylic acid was made.
④. Lawrence Craven announced a new discovery about aspirin.
⑤. It was proved that aspirin could be helpful in reducing heart attack risks.
A. ①③④⑤② B. ③①⑤④②
C. ①③⑤④② D. ③①④⑤②
3,500 years ago
2500 years ago
1897
1899
1900
1971
1977
20 0 3
1953
1999
1988
sold in shops as a tablet
got invented
proved it could help treat heart attack
Reduce cancer risk by 40%
help treat diabetes
History of aspirin