實用綜合教程 1(第2版)：學生用書（簡體書）

1 The earth means many things to the people who live on it.To a farmer, the earth is rich soil.To a road builder, the earth means mountains of hard rock.For a sailor, the earth is water as far as the eye can see.A pilots view of the earth may include part of an ocean, a mountain, and patches of farmland.An astronaut speeding through space sees the earths round shape and the outline ofland and oceans.Each of these different views helps describe the earth but none really tells what the earth is.
2 The earth is a huge ball covered with water, rock and soil, and surrounded by air.It is one of the nine planets that travel around the sun.The earth is the home of mankind and many other living things.Animals and plants live almost everywhere on the earths surface.They can live on the earth firstly because it is just the right distance from the sun.Living things need the suns warmth and light for life.They also must have water to live.The earth has plenty of water that covers most ofits surface.