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16-According to the passage, acetylsalicylic acid, or Aspirin …… .
A) was first sold in powder form
B) was invented in Germany in 1899
C) was sold to the public in 1853
D) was perfected in 1915
E) was originally produced in pill form
17- It's clear from the passage that Aspirin's medical value
A) was made known by Heinrich Dresser
B) was available to the public from 1853
C) was publicised by Karl Gerhardt
D) led to the creation of a newspaper
E) as a painkiller was widely recognised in 1853
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