A：二氧化硫
B：二氧化碳
C：一氧化碳
D：可吸入颗粒物
A：Hello，Tom.
B：Hi，Jenny. How do you feel?
A：I feel happy. Look! This is my sister(妹妹).
B：What's her name?
A：Her name is Kate.
B：What colour is her hair?
A：Her hair is black.
B：What colour are her eyes?
A：They are blue.
B：How nice(漂亮的)!
