【正文】
Unit 2 Saving the Earth Topic 2 All these problems are very serious. Section D 仁愛版英語 九年級(jí)上 What can you learn form the short movie? Water is important. Because humans, animals and plants can’t live without water. Movie Nearly three fourths of the earth is covered with water. water on the earth 3/4 被 …… 覆蓋 /39。n??l? / 幾乎、將近 While there is so much water around the world, we humans are still short of drinking water. So do animals and plants. Do you know why? be short of 缺乏 …… 1. Why is our earth thirsty when 190。 of the earth is covered with water? Because about 97% of the water on the earth is sea water and we can’t use it for watering plants or drinking directly. 2. What kind of water can humans drink and use? Humans can only drink and use fresh water from places including rivers, lakes and underground. ( )Although the world is hungry, it is even thirstier. While nearly 190。 of the earth is covered with water, we are still short of drinking water. This is because about 97% of the water on the earth is sea water