WITH THIS TYPE OF EXERCISE, READS THE QUESTIONS FIRST AND THENA...

60.With this type of exercise, reads the questions first and thena b read the text to find the correct answer. c dRead the passage and choose the best answer.Our demand for water is constantly increasing. Every year there are more and more people in theworld. Factories turn out more and more products and need more and more water. We live in a world ofwater. But almost all of it - about 97%-is in the oceans. This water is too salty to be used for drinking,farming, and manufacturing. Only about 3% of the world's water is fresh. Most of this water is not easilyavailable to man because it is locked in glaciers and icecaps.There is as much water on earth today as there ever was or will ever be. Most of the water we usefinds its way to the oceans. There, it is evaporated by the sun. It then falls back to the earth as rain. Wateris used and reused over again. It is never used up. Although the world as a whole has plenty of freshwater, some regions have a water shortage. Rain does not fall evenly over the earth. Some regions arealways too dry, and others too wet. A region that usually gets enough rain may suddenly have a seriousdry spell and another region may be flooded with too much rain.