Dear Sandy,

    My family and I 1 in Nanjing, China. We are very happy. I am 2 student in No. 11 Middle School. Is our school 3? No, it isn't very big, but it's very beautiful. There 4 any swimming pools in it. But our school 5 two basketball courts. There is a garden and many tall trees in our school. There are about fifty 6 in our school. I am in Class 2, Grade 1. My classroom is 7 the second floor in 8 A. There are twenty girls and twenty-five boys in my class. Miss Fang is our Chinese teacher. 9 is a very good teacher. We all like her very much.

    May（愿） you be 10! Hope（希望） to see you soon（尽快）.

   Yours,

 Lily

We walked back about two____(千米)and found Sam at last．

①大道之行，天下为公    ②己欲立而立人，己欲达而达人

③知人者智，自知者明    ④先天下之忧而忧，后天下之乐而乐

某同学用分度值是1mm的刻度尺测一个物体的长度，先后用正确的方法测量三次，测得的数值分别是：13.46cm、13.44cm、13.44cm，测得的结果应表示为（     ）