【答案解析】[听力原文]

Since all living things need it, / and it makes up two-thirds of our bodies, / it seems obvious that water is vital to our health. / Most people, however, drink fewer than the eight recommended glasses each day. / So why is drinking enough water so important? / A minor water deficiency can lead to headaches, sleepiness, and moodiness, / while losing a large amount of water for a long time can cause high blood pressure / and other serious problems. / Drinking water helps our bodies in a variety of ways. / It helps us get rid of toxic substance, / which helps our kidneys to do a better job, / and it helps prevent bladder infections. / It improves digestion and helps us develop substances / that our body produces in the blood to fight diseases. / Finally, water can give our skin a healthy glow. / Drinking water throughout the day is an important habit to pick up. / For your health, give this simple substance the / importance it deserves. /