One of the most important parts of the body is blood. The heart pumps this red liquid around the 25 .......... This keeps us 26 .......... and alive. More than half of blood is plasma. This is a clear and yellow 27 .......... . It carries red and white cells. There are millions of red blood cells in one small drop of blood. They carry oxygen round the body and collect carbon dioxide from body parts. There are thousands of white cells in a 28 .......... of blood. They are bigger than red cells. They defend our body against microbes.

Read the following text and answer the answer the questions below. One easy way to protect wildlife is learning about endangered animals that live around your home. In this way, they are friends and family about the wonderful birds, fish, and plants that live near your home. You are going to be more careful about nature. You can also visit a national wildlife museum or park. These places give good information about how to protect endangered animals and their homes. You can do voluntary work in these places to help animals and their babies. 29. Why is it useful to visit places like a museum? 30. What can you teach your friends and family? 31. "They" in line 3 refers to ---------- a) friends b) animals c) plants d) friends and family 32. Voluntary work is work you receive ---------- money for. a) some b) no c) a lot of d) a little

Read the following passage and answer the questions. At night you can see many stars. In the day you can see one star - the sun. Did you know that the sun is a star? It looks bigger than other stars because it is nearer to us. The sun is much bigger than the moon. It is made of very hot gas. The sun's light and heat make our plants and food grow. We could not live without the sun. 33. During the day we can see ---------- in the sky. a) many stars b) one star c) no stars d) some stars 34. What does it in the third line refers to? a) the moon b) the earth c) the sun d) plants 35. According the passage the moon is ---------- than the Sun. a) smaller b) bigger c) as big as d) the biggest 36. We can live without the sun. True O False O