夏翁，江阴巨族。尝舟行过市桥，一人担粪，倾入其舟，溅及翁衣。其人旧识也，僮辈怒，欲殴之。翁曰：“此出不知耳，知我宁肯相犯！”因好语遣之。及归，阅债籍，此人乃负三十金无偿，欲因以求死。翁为之折券①。

    长洲尤翁开钱典②。岁底，闻外哄声，出视，则邻人也。司典者前诉曰：“某将衣质钱，今空手来取，反出詈语③，有是理乎！”其人悍然不逊，翁徐谕之曰：“我知汝意，不过为过新年计耳。此小事，何以争为？”命检原质，得衣帷四五事④，翁指絮衣曰：“此御寒不可少。”又指道袍曰：“与汝为拜年用，他物非所急，自可留也。”其人得二件，默然而去。是夜竟死于他家，涉讼经年。盖此人因负债多已服毒知尤富可诈既不获则移于他家耳。或问尤翁：“何以预知而忍之？”翁曰：“凡非理相加，其中必有所恃，小不忍则祸立至矣。”人服其识。

（冯梦龙《智囊·知微》）

【注释】①折券：撕毁债券，不再索取，即免债的意思。②钱典：当铺。③詈(lì)语：骂人的话。④事：量词。件，样。

已知$x^2+y^2=1,x>0,y>0$，且${\log }_a(1+x)=m,{\log }_a\frac{1}{1-x}=n,{\log }_{a}y=$（     ）

$2\sqrt{75}-3\sqrt{27}+\sqrt{3}$的结果是____.$$

阅读下面短文，并借助上下文和插图补充所缺信息。每个空格只能填写一个单词。

    Li Na is ____ Chinese professional(职业的) tennis player. Li has won 5WTAs and 19 ITF singles titles. Li Na was born ____ February 26, 1982 in Wuhan, China. When Li was 6 years old, she became a badminton ____, but her coach kept noticing that she looked as if she were playing tennis. By the time she was 8, her coach ____ her parents if she could switch to tennis, which she did at the ____ of 9. In 1997 Li ____ China's National Tennis Team andturned professional in1999. At the end of 2002, Li Na ____ the national tennis team to study at Huazhong University of Science and Technology, where she completed her bachelor(本科) degree in journalism. However, Li returned to the national team in 2004, Jiang Shan ____ Li and became her personal coach in 2006. In 2008 Li finally left the national team, becoming a free player. Li ____ English very well. She has a great sense of humor, too. She can move fast in her tennis playing. So she can ____ many other players and get many honors in her career (生涯). She is the most successful tennis player in China.