材料
Albert Einstein was from a Jewish family. He was born in Germany. When he was （1）,he liked to ask questions. By the time he was fourteen years old,he （2）advanced mathematics（3）by himself.（4） then he had decided to become a physicist and （5） himself（6）abstract(抽象) research.
His family was not rich,but his parents managed （7）him to a technical school and （8）to the Federal Institute of Technology in Switzerland. After graduation,he began to teach. Later,he worked in a government office. Then （9）the money he saved,he continued his studies at the University of Zurich. In 1905 he got a（10）degree. It was at that time （11）he began the research and studies which led （12）his famous Theory of Relativity.
For most people,his theory was （13）difficult to understand. Many scientists laughed （14）it and（15）would accept it. But Einstein stuck to it and went on with his research.
His family was not rich,but his parents managed （7）him to a technical school and （8）to the Federal Institute of Technology in Switzerland. After graduation,he began to teach. Later,he worked in a government office. Then （9）the money he saved,he continued his studies at the University of Zurich. In 1905 he got a（10）degree. It was at that time （11）he began the research and studies which led （12）his famous Theory of Relativity.
For most people,his theory was （13）difficult to understand. Many scientists laughed （14）it and（15）would accept it. But Einstein stuck to it and went on with his research.
第(13)选（）
A. very
B. too
C. rather
D. so
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