请选择适当的单位名称填空。(12分)
  
（1）My pencil is 10     .
（2）An egg is 50        .
（3）My schoolbag is 2      .
（4）My brother is 1．7      .
（5）Sperm Whale is 35       .
（6）My bedroom is 25 square(平方)       .