dosiaSamosia
2.In 1455 they had started to print books. 3.In 1796 they had given the first vaccination. 4.In 1800 they had made the first battery. 5.In 1895 they had discovered X-rays. 6.In 1903 they had flown for the first time. 7. In 1928 they had discovered penicillin. 8.In 1932 they had split the atom. 9. In 1953 they had found the molecular structure of DNA. 10. In 1969 They had walked on the moon.
3.In 1796 they had given the first vaccination.
4.In 1800 they had made the first battery.
5.In 1895 they had discovered X-rays.
6.In 1903 they had flown for the first time.
7. In 1928 they had discovered penicillin.
8.In 1932 they had split the atom.
9. In 1953 they had found the molecular structure of DNA.
10. In 1969 They had walked on the moon.