1. the poincaré conjecture.
in 2002, the russian mathematician grigori perelman proved the poincaré conjecture. this is a very serious discovery in mathematics. it was one of the seven tasks of the millennium. for this work, he received the prestigious fields medal, an analogue of the nobel prize in mathematics.
2. quantum clock.
quantum clocks are the most accurate chronometer in the world, surpassing all previously existing ones. nobel laureates of 2012 serge arosh and david wineland made a discovery that allowed to overcome the quantum barrier.
3. the discovery of eris.
the eris is the second after the massive pluto massive dwarf planet of the solar system. it was the discovery of eris from pluto that ceased to be the ninth planet, and passed into the category of "dwarf".
4. created the first synthetic bacterial cell.
in 2010, scientists from the craig venter institute created the first fully synthetic chromosome with the genome. when it was embedded in a bacterial cell devoid of genetic material, it began to function and divide according to the laws prescribed by the new genome.
5. higgs boson.
this was experimental evidence of the existence of the higgs boson. the practical significance of the discovery of the higgs boson is that scientists are opening up prospects for the development of anti-gravity and the development of engines that do not require energy to operate.
I love music and I write songs in my spare time. There was one day last year, I met 1) a man who is 2) a singer, and he asked me to write 3) a song for him. I worked hard on 4)the song, and spent two days writing it. 5)The guy said he liked6)the song, and he wanted to perform it, so I was quite excited. I went to7) the venue where he was going to perform, and there was 8) a big crowd. He had a lot of 9)- fans. He sang several songs, but when he sang it was disappointed. He had changed 10)the song and he left out 11)an _important verse. 12)__the__fans in13)thecrowd seemed to enjoy it, but I was really upset.
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