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编辑点评： 考生在新GRE写作中要格外重视思维逻辑与论据论证，平时注意积累素材，多收集一些新GRE写作论据论证例子。下面是小编为大家搜集的关于巴斯德的名人素材，希望能够帮助大家更好地备考新GRE写作，获得新GRE写作高分。 Chemist and biologist, famous for his germ theory and for the development of vaccines. Born December 27, 1822 in the small town of Dole, the son of a tanner. He studied in the college of Arbois and at Besancon, where he graduated in arts in 1840. As a student preparing for the prestigious Ecole Normale Superieure of Paris, he did not doubt his ability. When he gained admittance by passing fourteenth on the list, he refused entry; taking the examination again, he won third place and accepted. For his doctorate his attention was directed to the then obscure science of crystallography. This was to have a decisive influence on his career. Under special dispensation from the minister of education, Pasteur received a leave of absence from his duties as professor of physics at the lyc of Tournon to pursue research on the optical properties of crystals of the salts of tartrates and paratartrates, which had the capacity to rotate the plane of polarized light. He prepared 19 different salts, examined these under a microscope, and determined that they possessed hemihedral facets. However, the crystal faces were oriented differently; they were left-handed or right-handed, thus having the asymmetrical relationship of mirror images. Furthermore, each geometric crystal variety rotated the light in accordance with its structure, while equal mixtures of the left- and right-handed crystals had no optical activity inasmuch as the physical effects canceled each other. Thus he demonstrated the phenomenon of optical isomers. | 
