It's the water that makes our daily lives possible. That's why protecting source water is

根据短文内容，从短文后的选项中选出能填人空白处的最佳选项，选项中有两项为多余选项。
It's the water that makes our daily lives possible. That's why protecting source water is one of the primary missions at the Washington Suburban Sanitary Commission. We provide safe, clean drinking water to 1.8 million residents in Prince George's and Montgomery counties.___16___
One way we protect the water is through the watershed. The watershed reduces the pollutants reaching the reservoirs. They hold the source water that provides 30 percent of our customers with drinking water. That's over 600,000 people. For many years, we have issued permits to allow limited recreational use of the watershed.___17___ It's a quiet, beautiful area away from urban stress and traffic. And we use it ourselves and other activities to promote water and environmental awareness.
___18___ Last year, the WSSC issued new regulations with new restrictions impacting all users, including, closing the watershed a month earlier in the fall and opening it a month later in the spring. We also limited horseback riding to the access roads. Our goal was and is to protect the watershed.
A very small but vocal group felt we should have consulted them first. Perhaps afterward we should have. But I do want to make one thing very clear. ___19___ But we cannot allow the interests of a tiny group to override (不理会) the well­being of the WSSC customers who drink the water from those reservoirs. There must be a balance.
___20___ So we hired a consultant to gather data, gather input from watershed users, and assess the condition of the watershed. We also asked them to look at our operations and management practices and provide the WSSC with findings and recommendations on how to make improvements.
It' s time to work together to protect the water and provide appropriate access to the rare jewel we call the watershed.
A. We certainly understand the attraction.
B. At no time did we consider closing the watershed entirely.
C. However, only a few people like saving water.
D. But most importantly it's about protecting the water.
E. The government has taken some strong measures.
F. We take that responsibility very seriously.
G. A review of our watershed policies and regulations was overdue.
【答案】16. F    17. A    
18. D    19. B    
20. G
【解析】
本文是一篇说明文。文章以第一人称的形式陈述了保护当地集水区的有关事情。
【16题详解】
空格上文“We provide safe, clean drinking water to 1.8 million residents in Prince George's and Montgomery counties.(我们为乔治王子和蒙哥马利县的180万居民提供安全、清洁的饮用水。)”以及下文“One way we protect the water is through the watershed.(我们保护水源的方法之一就是通过分水岭)”可知，空格上下都是讲述我们认真负责的保护水源。故F项“我们非常认真地对待这一责任。”。符合语境，故选F。
【17题详解】
空格下文“It's a quiet, beautiful area away from urban stress and traffic.(这是一个安静、美丽地区，远离城市压力和交通。) ”可推断，这是有吸引力的地方。故A项“我们当然明白他的吸引力。”符合语境，故选A。
【18题详解】
空格上一段讲述这个地方非常有吸引力，是个安静美丽的地区，结合空格下文“Last year, the WSSC issued new regulations with new restrictions impacting all users, including, closing the watershed a month earlier in the fall and opening it a month later in the spring.(去年，WSSC发布了新的法规，对所有用户施加了新的限制，包括在秋季一个月前关闭集水区，在春季一个月后开放。)”可推断，此处与上文是转折关系，保护水源仍旧是最重要的。故选D。
【19题详解】
空格上文“A very small but vocal group felt we should have consulted them first. Perhaps afterward we should have. But I do want to make one thing very clear.”讲述一个小团体觉得我们应该先咨询他们。也许之后我们应该这样做。但我确实想把一件事说得很清楚，空格下文讲述“但我们不能让一个小集团的利益压倒饮用这些水库水的WSSC客户的福祉。必须有一个平衡。”因此推断，此处讲述有一部分人不希望关闭集水区，故B项“我们从来没有考虑过完全关闭分水岭。”符合语境，故选B。
【20题详解】
空格下文“So we hired a consultant to gather data, gather input from watershed users, and assess the condition of the watershed.”讲述因此，我们聘请了一位顾问来收集数据，收集流域用户的输入，并评估流域的状况。可推断，我们的集水区的政策和条例的审查已经逾期。故选G。