- 1.Stanley Milgram of Yale University discovered that people are connected by “six degrees of separation”.；This means：2.In the spring of 1961， Yuan planted the seeds of the mutant in a pioneering field， proving that the plant， discovered in 1960， w3.The Terracotta Army was discovered on 29 March（）by a group of farmers digging a water well， about 1.5 kilometres east of the Emp4.Scientists have discovered how to predict an earthquake .5.It was discovered that the bodies of the diabetics had something in common: the group of cells in the（）was always damaged.6.Around 1880, Robert Koch discovered the transmission of disease by（）.7.The first sulfa drug, prontosil, was discovered in 1932.8.Penicillin was discovered by accident in the summer of 1928.9.When was the first antibiotic—arsphenamine discovered?It was discovered by Paul Ehrlich in（）.10.Edward Jenner discovered（）at the end of the 18th century.11.After observing that bacteria took up toxic dyes, Paul Ehrlich discovered arsphenamine, the first antibiotic.12.Archaeological Ruins of Liangzhu City was discovered in the city of （）.13.In the spring of 1961, Yuan planted the seeds of the mutant in a pioneering field, proving that the plant, discovered in 1960, w14.The Terracotta Army was discovered on 29 March ________ by a group of farmers digging a water well, about 1.5 kilometres east of