Passage 26.A Flying Fox

　　A flying fox is not a fox at all. It is a bat. But this bat looks like a fox. A flying fox is very big. It likes to eat fruit. Sometimes the flying fox is called fruit bat.

　　The flying fox flies into fruit trees. Then the bat eats all the fruit. So fruit farmers do not like the flying fox.

　　Passage 27.Flying Birds

　　Birds don't fly high up in the sky. The air is too thin.

　　It  is  hard  for  birds  to  breathe  in  thin  air.  Thin air doesn't hold them up.

　　Birds fly near the ground so that they can see where they are. The birds look for places they know. Then they do not get lost. Some birds fly so low over the ocean that the waves often hide them. Many birds fly a long distance in the spring and autumn.

　　Passage 28.Air

　　Air is all around us. It is around us as we walk and play. From the time we were born air is around us on every side. When we sit down, it is around us. When we go to bed, air is also around us. We live in air. We can live without food or water for a few days, but we cannot live for more than a few minutes without air. We take in air. When we are working or running we need more air. When we are asleep, we need less air. We live in air, but we cannot see it. We can only feel it  when  it  is  moving.  Moving  air  is called wind. How can we make air move? Here is one way. Hold an open book in front of your face, close it quickly. What can you feel? What you feel is air.

　　Passage 29.Clocks

　　There are many clocks in the Brown's house. They are in different rooms.A big clock stands in a corner of the sitting room. It is a very, very old clock, but it still keeps good time. Mr. Brown winds it once a week.

　　Passage 30. Swimming

　　Swimming is a good sport. It's popular. People like swimming because the water makes people feel cool. But if they swim in a wrong place, it is very dangerous. These years, some people died when they were enjoying themselves in water and most of them were students. Summer holiday will be there again. I want to give you some advice. First, don't get into the water when you are alone. Second, don't get into the water if there is a No swimming sign. Third, you should be careful in the water. If you remember these, swimming will be safe and it's good for your health.

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