⑴Is Lingling going to fly a kite? A、I'm from England.
⑵What are you going to do? B、I'm reading books.
⑶What are you doing? C、Yes, she is.
⑷Where are you from? D、I'm Sam.
⑸What's your name? E、We are going to ride bikes.
A.数量的多少 B.整体与部分的关系 C.数量的多少和变化情况
3角2分=元
过直线外一点,向直线所作的线段中,垂线最短.