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..............of computer dates back to 1939.
invention
First vaccination to protect people from diseases .......... by Edward Jenner.
was invented
The ............of first automobile Karl Benz's work increased people's mobility and freedom.
inventor
Even though Edwin Drake ............petrol, he was unaware of its potential usage
discovered
Even though its ............. dates back to 6th century, chess has not change throughout history.
invention
Even though Gunpowder ............in China, its date is unknown.
invented
After the .............of modern printing press,a huge amount of books were written in Europe.
invention
Before the ...........of plane, wright brothers made a lot of unsuccesfull attempt.
invention
James watson and Francis Crick's work led to ........... of DNA in 1953.
discovery
Alexander fleming was the first person to ........ antibiotics.
discover
One of the most important work of Isaac Newton was the ............ of gravity.
Discovery.
Wright Brothers are considered the ......... of airplane.
inventor
The first compass .......... in China during Han Dynasty.
was invented.
German........ Johannes Gutenberg invented modern printing press.
inventor
Lightbulb is the .................... of Thomas Edison.
invention
America ................... by Cristopher Colombus.
was discovered
Marie Curie ............. radioactivity.
discovered
Graham Bell is the .................of the telephone.
inventor