【难度】一般
70.【答案】C
【试题解析】细节理解题。根据倒数第二段可知,经过了20多年的使用,Peters拆除了这座破旧的桥,又重建了一座新桥,故答案选C。
【难度】一般
链接2. 2010安徽卷
The need to feed a growing population is putting much pressure on the world’s supply of water. ②With 97% of the world’s water too salty to be drunk or be drunk or used in agriculture, the worldwide supply of water needs careful management, especially in agriculture. ③Although the idea of a water shortage(短缺)seems strange to someone fortunate enough to live in a high rainfall country, many of the world’s agricultural industries experience constant water shortages .
Although dams can be built to store water for agricultural use in dry areas and dry seasons, the costs of water redistribution(重新分配) are very high. Not only is there the cost of he engineering itself ,but there is also an environmental cost to be considered .Where valleys(山谷) are flooded to create dams, houses are lost and wildlife homes destroyed . Besides , water may flow easily through pipes to filds, but it cannot be transported from one side of the world to the other. Each country must therefore rely on the management of its own water to supply its farming requirements.
This is particularly troubling for countries with agricultural industries in areas dependent on irrigation(灌溉). In Texas, farmers’ overuse of irrigation water has resulted in a 25% reduction of the water stores , In the Central Valley area of southwestern USA ,a huge water engineering project provided water for farming in dry valleys , but much of the water use has been poorly managed.
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