2014届高三英语二轮【完形填空突破-3真2模含解析】20
（2012·天津卷） 阅读下面短文，掌握其大意，然后从16～35各题所给的A、B、C、D四个选项中，选出最佳选项。
I fell in love with Yosemite National Park the first time I saw it, when I was 13. My parents took us there for camping. On the way out, I asked them to wait while I ran up to El Capitan, a __16__ rock of 3,300 feet straight up. I touched that giant rock and knew __17__ I wanted to climb it. That has been my life's passion (钟爱) ever since — __18__ the rocks and mountains of Yosemite. I've long made Yosemite my __19__.
About 15 years ago I started seeing a lot of __20__， like toilet paper, beer cans, and empty boxes, around the area. It's __21__ me why visitors started respecting the place __22__ and treated such a beautiful homelike place this way.
I tried __23__ trash (垃圾) myself, but the job was too big. I would __24__ an hour or two on the job, only to find the area trashed all over again weeks later. Finally, I got so __25__ it that I decided something had to change.
As a rockclimbing guide, I knew __26__ about organizing any big event. But in 2004，together with some climbers, I set a date for a __27__. On that day，more than 300 people __28__. Over three days we collected about 6,000 pounds of trash. It was amazing how much we were able to __29__. I couldn't believe the __30__ we
