Mike and Mary are twins(双胞胎). Their birthdays are on the same day. They are in the same school and in the same grade. They all like to eat lunch at school. But they are different in many respects(方面). Mike is in class 1 and Mary is in class 5. Mike like summer because he can go swimming. Mary doesn't like it because the weather is so hot. She likes going on a picnic in spring. Mike often does sports on the weekend, but Mary often goes shopping with her friends. Mike likes pork, eggplants and noodles. Mary likes ice cream, popcorn and chocolate.