Rick is a good man. He makes birthday cakes in a store. His cakes are great and have very good prices, so many people buy his cakes. He makes friends with lots of his customers(顾客). They all like him very much. One evening, he wants to go home, but many of his old customers come in. Rick smiles(笑) to them, "I am sorry. It is late today. If(如果) you need cakes, please come tomorrow." One of them takes out a nice cake and says to him, "You make so many great cakes for us. This birthday cake is for you. Happy birthday, Rick."

小题1:Where does Rick work?

A．At school.

B．In the classroom.

C．In a store.

D．At a party.小题2:His customers give (给) him           .

A．many cakes

B．a birthday cake

C．some vegetables

D．some fruit小题3:One evening, many customers come to Rick's store because           .

A．they want to buy cakes

B．that day is Rick's birthday

C．Rick asks them to come

D．they come for a party

简述预防流行性感冒的方法。