Banked Cloze（只填写正确答案序号）Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank. You may not use any of the words in the bank more than once.Water is life. We depend on it to keep us and the (1)_____healthy. Nonetheless, many people take water as a natural resource for granted. Today, the situation has changed. As the population of the world increases, and with it the demand for water, there is growing concern that our water supplies will not be as (2) _____ as we think. Eighty countries now have water shortages and 2 billion people lack access to clean water. One billion people lack enough water to simply meet their basic needs.While nearly 70 percent of the world is covered by water, only 2.5 percent of it is fresh. This tiny amount of fresh water available on the planet has remained fairly constant over time and is (3)_____unevenly around the world. The growth of the world population, therefore, (4)_____competition for a clean supply of water every year. Worse still, humans are not efficient users. According to the United Nations, water use has grown at more than twice the (5)_____of population increase in the last century. The reality is that an increasing number of regions are (6)_____with water scarcity. By 2025, two-thirds of the world’s population may face water shortages.An adequate and (7)_____water supply is essential to the future of every country. To increase and conserve supplies of fresh water, many countries have been working at technological (8)_____, one of which is in the process of desalination. New filtration systems have been developed to (9) _____traditional heating methods. Thus the expected (10)_____can be achieved: lower costs.