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- Stanley Milgram of Yale University discovered that people are connected by “six degrees of separation”.；This means：
- In the spring of 1961， Yuan planted the seeds of the mutant in a pioneering field， proving that the plant， discovered in 1960， w
- The Terracotta Army was discovered on 29 March（）by a group of farmers digging a water well， about 1.5 kilometres east of the Emp
- Scientists have discovered how to predict an earthquake .
- It was discovered that the bodies of the diabetics had something in common: the group of cells in the（）was always damaged.
- Around 1880, Robert Koch discovered the transmission of disease by（）.
- The first sulfa drug, prontosil, was discovered in 1932.
- Penicillin was discovered by accident in the summer of 1928.
- When was the first antibiotic—arsphenamine discovered?It was discovered by Paul Ehrlich in（）.
- Edward Jenner discovered（）at the end of the 18th century.
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