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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 the telephone was patented – level 3
07-03-1876Since 1873, Alexander Graham Bell was trying to find a way...
The day the telephone was patented – level 1
07-03-1876Alexander Graham Bell starts his experiments in 1873. He wants to...
The day the telephone was patented – level 2
07-03-1876Alexander Graham Bell started his experiments in 1873. He was trying...
The day the world saw the first cloned sheep – level 1
22-02-1997Dolly is a sheep. She is born on July 5, 1996....
The day the world saw the first cloned sheep – level 2
22-02-1997Dolly was a sheep born on July 5, 1996. She looked...
The day the world saw the first cloned sheep – level 3
22-02-1997Dolly was a sheep born on July 5, 1996. At first...
The day of the Miracle on the Hudson – level 1
15-02-2009It is January 15, 2009. A big plane takes off from...
