单选题 Worldwide fame burst upon Albert Einstein on November 7, 1919, when British astronomers announced they found the first confirmation of Einstein's general relativity theory. Einstein had already become known in scientific circles because of his two astonishing theories: the special theory of relativity, published in 1905 when he was only 26 and a minor clerk in the Swiss patent(专利)office, and the general theory of relativity, advanced between 1913 and 1915. He was considered so brilliant by other scientists that in 1914 he was invited to join the famous Royal Prussian Academy of Sciences and to become head of the research branch at the Kaiser Wilhelm Institute. He accepted the offer and moved to Berlin. Question:It can be inferred from the passage that the author ________