Albert Einstein is considered as one of the greatest minds of the twentieth century．Even as Einstein was thoughtful．It was said that he was a slow talker and he did not start talking until he was three years old．The boy was encouraged by his uncle, an engineer, and by a medical student who ate dinner once a week at the Einstein's home．

　　Albert Einstein was born on March 14,1879, in Germany．Though he attended school as a young boy, his real studies were done at home with books on maths, physics and philosophy．By the age of 12 he had taught himself geometry(几何学)．A teacher advised Einstein to leave school, since he destroyed the other students' respect for the teacher．When he was 15, he had to leave school in mid-term to join his parents, who had moved to Italy．

　　At the age of 16 he failed the exam to enter a school, where he would have been trained as an electrical engineer．At that time, Einstein developed a plan．He decided to enter a school to study maths and physics so that he could become a teacher．In 1900 he graduated as a teacher of maths and physics．His teachers did not think very highly of him, so he had difficulty in finding a job in a university．In 1901 he took a job as a high school teacher and married Mileva Martisch．One year later, Einstein became a teacher at the University of Bern．In 1905 Einstein wrote a paper on what is now known as the Special Theory of Relativity(狭义相对论)．He won the Nobel Prize for Physics in 1921 for his work on the photoelectric effect(光电反应)．

　　Did you know that there is even a crater(陨石坑)on the moon named after Einstein?

1．What do people think of Einstein?

People think that Einstein _______________________．

2．Einstein started to speak very early when he was a little boy, didn't he?

____________________________________________

3．Why did Einstein have to leave school when he was fifteen?

Because he had to _____________________________

4．When did Einstein become university teacher?

____________________________________________

5．What did Einstein win in 1921?Why?

____________________________________________

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　　Louis Braille was born in Coupvray, France．He was a very smart child．　　1　　, at the age of four, he became blind by accident．Louis began attending school in 　　2　　 town when he was seven years old．

　　Three years later, Louis and his father traveled to Paris．There, he went to a school for blind children．One day a French soldier, Charles Barbier, visited the school．Barbier invented a system of night-reading．This system 　　3　　 small dots for the letters．Soldiers used this system in time of 　　4　　．Barbier thought this system could help the blind to read．

　　Soon Braille discovered that there were some shortcomings in Barbier's system, but it gave Louis a brilliant idea．He improved Barbier's system．By the age of 　　5　　, his new system was completed!Now he wanted 　　6　　 schools to try his system．Luck went 　　7　　 him again．The school refused to use his system．Louis died in 1852 in Paris at the age of forty-three．

　　Two years 　　8　　 he died, the blind schools began to use his system．Today we 　　9　　 this system Braille in honour of Louis Braille．His system is used for all languages, and for maths, science, writing music, and computers 　　10　　 the blind．