Welcome to the House of Noodles! In our restaurant, we have some great specials. We have different kinds of noodles like mutton noodles and beef noodles. There are some delicious vegetables in the noodles. What size bowl of noodles would you like? A large bowl of beef noodles is only eight yuan. For mutton noodles, a small bowl is five yuan, a medium one is seven yuan and for a large one, it is just ten yuan. You can also order our cabbage and egg noodles for just four yuan. And we have free green tea for you every day. All our noodles are good and at a good price!

选出句子中所包含的信息（  ）

    有一件事情是许多人都知道的，________，到了晚年耳朵完全聋了，他指挥交响乐队在演奏，自己却没听到什么。