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 following the passage. Read the passage through carefully before our choices. Each choice in the bank is identified by a letter: Please mark the corresponding letter for each item on Answer Sheet 2 with a single line t rough the centre. You may not use any of the words in the bunk more than once Humans use water for three basic purposes: agriculture, industry, and domestic and municipal use water for drinking, cooking, cleaning, and so forth. And the amount of water 1__ to each person decreases as the population grows, 2__ the possibility of water shortages. Water shortages will not come all at once in every part of the world, just as the world's population is 3__ distributed by region, so is the annual 4__ of renewable water. Rainfall and snowfall are 5__ by uneven weather patterns and landscape, and as a result, some areas of the world get more precipitation than others. This leads the uneven 6__ of water all over the world Natural water scarcity has prompted many nations to try to increase their water supplies by building dams to catch water that otherwise would escape to the sea, or by sinking more and deeper wells. But these efforts can have 7__ side effects that can contribute to water scarcity. Instead of building dams, some countries choose to increase their 8__ to groundwater. But this practice increases the risk of over-pumping aquifers (蓄水层) Pollution also affects the water supply, reducing the available water by it toxic or otherwise 9__ for human use. Water shortages could also lead to international conflicts as countries 10__ for limited water resources. Political tensions over water often appear when different nations lay claim to the same river, lake, or aquifer. According to the UN, more than 300 river basins and aquifers worldwide cross national boundaries are creating the potential for conflicts A) access B) positively C)deliberately D) compete E) negative F) distribution G) available H) determined I)unevenly J) unfit K) starved L) raising M) approach N)arising O)supply