Chapter 4 Numbers：Everyone’s language

1. a pair of odd /even numbers 一对奇/偶数2. in tens                  十进制3. consist of = be made up of  由…组成4. square root               平方根5. electric kettle             电水壶6. electrical appliances        电器7. electronic watch           电子表8. in one’s lifetime           在某人一生中9. a girl with an amazing brain  一个有惊人头脑的人10. a living computer         活电脑11. solve the problem      阅读全文