Penguins are good swimmers, and they are very good at swimming in the sea. They can dive much deeper than people. Some people can dive about 180 metres, but most people can only dive about 30 metres. Penguins can dive 500 metres. That is a long way down! Do you know the TV Tower in Shanghai? That is 468 metres high.

 Penguins can hold their breath much longer than people.Some people can hold their breath for about five minutes, but most people can only hold their breath for one or two minutes. Penguins can hold their breath for 20 minutes.

Many whales can hold their breath longer than penguins. Some whales can hold their breath for about two hours!

If it takes 3 minutes to boil 1 egg，how long will it take to boil 2 eggs?

Mr Red's diamond(钻石)is missing in the house.The policeman is asking him some questions.

P: Well, tell me, what did you do last night?

R: Mmm... At 7:00, a postman came and sent me the newspaper. I was reading some newspapers. At that time, Miss Tina was cooking supper for me in the kitchen.

P: When did Miss Tina leave your house?

R: About 8:00, after she washed the dishes.

P: Ok, and then?

R: At 8:30, I was watching TV. Someone broke my windows of the bedroom, so I asked them to fix for me.

P: What?  Someone broke your windows?

R: Yes. A fat and tall man. But he called his friends to fix the windows after a while.

P: Oh, I think I know now.