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The day of a successful vaccination – level 1
14-05-1796Smallpox is a very dangerous illness. It kills people. Cowpox is...
The day of a successful vaccination – level 2
14-05-1796Smallpox was a very dangerous disease which killed millions of people....
The day of a successful vaccination – level 3
14-05-1796Smallpox was a deadly and highly infectious disease that had killed...
The day of the first episode of The Simpsons – level 1
17-12-1989The Simpsons is a very popular animated sitcom. It is also...
The day of the first episode of The Simpsons – level 2
17-12-1989The Simpsons is a very popular animated sitcom. It is also...
The day of the first episode of The Simpsons – level 3
17-12-1989The Simpsons is a very popular animated sitcom and the name...
The day the plane was invented – level 1
17-12-1903People want to fly. People use balloons with hot air at...
The day the plane was invented – level 2
17-12-1903People always wanted to fly. In the 18th century, it was...
The day the plane was invented – level 3
17-12-1903Since the beginning of our civilization, people have had a dream:...
The day the South Pole was reached – level 3
14-12-1911Norwegian explorer Roald Amundsen and British explorer Robert Falcon Scott long...
