题目内容
19．Many young people like posting photos ofthemselves （they） on Facebook （脸谱）．It helps them get to know each other．分析 很多年轻人喜欢在脸谱网上张贴他们自己的照片，这有助于他们互相了解．
解答 答案：themselves．
根据所给单词主格they结合前面的Many young people like posting photos 可以推测句意为："很多年轻人喜欢在脸谱网上张贴他们自己的照片，这有助于他们互相了解．"，设空处放在介词of后面作宾语，结合句意应填they的反身代词themselves，故答案为：themselves．
点评 本题考查用所给单词的适当形式填空，首先要根据语境明确句意，然后再根据相关语法对所给单词在形式上做出正确的变化．
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10．Louis Braille was born in Coupvray，France．He was a very smart child．Unluckily，at the age of four，he became blind by accident．Louis began attending school in his 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 used small dots for the letters．Soldiers used this system in time of war．Barbier thought this system could help the blind to read．
Soon Braille discovered that there were some shortcomings （缺点） in Barbier's system，but it gave Louis a brilliant idea．He improved Barbier's system．By the age of fifteen，his new system was completed!Now he wanted blind schools to try his system．Luck went against him again．The school refused to use his system．Louis died in 1852in Paris at age forty-three．
Two years after he died，the blind schools began to use his system．Today we call this system Braille in honour of Louis Braille．His system is used for all languages，and for maths，science，writing music，and computers for the blind．
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 used small dots for the letters．Soldiers used this system in time of war．Barbier thought this system could help the blind to read．
Soon Braille discovered that there were some shortcomings （缺点） in Barbier's system，but it gave Louis a brilliant idea．He improved Barbier's system．By the age of fifteen，his new system was completed!Now he wanted blind schools to try his system．Luck went against him again．The school refused to use his system．Louis died in 1852in Paris at age forty-three．
Two years after he died，the blind schools began to use his system．Today we call this system Braille in honour of Louis Braille．His system is used for all languages，and for maths，science，writing music，and computers for the blind．
| Louis Braille | ||
| Time | Place | Events |
| in （76）1809 | in Coupvray | was born |
| at the age of four | became（77）blind | |
| at the age of seven | in （78）his town | started school |
| at the age of （79）ten | in Paris | studied in a school for blind children |
| by the age of 15 | completed his new system | |
| in 1852 | in Paris | （80）died |