Mountain climbers around the world dream about going up Mount Everest (珠穆朗玛峰). It is the highest mountain in the world. But many people who have climbed the mountain have left waste material that is harming the environment.
A team of Americans is planning the largest clean-up effort ever on Mount Everest. They will make the risky trip up the mountain next month.
The team of eight Americans will be guided by more than twenty Sherpas of Nepal (尼泊尔夏儿巴人). Their goal is to remove all the trash (废物,垃圾) they see. They will spend two months cleaning up the mountain by gathering oxygen bottles, fuel containers, batteries, drink cans and other kinds of trash. They are expected to remove at least three tons of trash in large bags.
Team leader Robert Hoffman is making his fourth trip up the mountain. He says he hopes to bring Everest to the condition it was in before the first successful climb fifty years ago. He also says he hopes the effort will influence other peop
A. The success in climbing up the mountain.
B. The environmental pollution of the mountain.
C. The equipment for their trip to the mountain.
D. The risks facing the climbers of the mountain.
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