I was not originally attracted to nature. For me, nature was associated with the few minutes playing soccer in the     1    (nice) cut grass. But in Michigan, nature presents itself in many forms such as sledding as fast as you can down the hill or swimming in one of the five great lakes. These experiences encouraged me     2    (explore) one of the raw forms of connecting with nature: camping. Although I     3    (spend) a lot of time outside, I had never camped or experienced all of what nature offers.

With    1    area of more than 397 square kilometers, Wulingyuan Scenic and Historic Interest Area sits in Central China’s Hunan Province. It    2    (include) three sections: the Zhangjiajie National Forest Reserve, the Suoxi Brook area and the Tianzi Mountain area. The major topography (地形) consists of sandstone hills, gradually    3    (develop) into more than 3,103 amazing peaks, many of    4    are over 400 meters high. Between the peaks lie valleys with streams, pools and waterfalls, and some 40 caves, as well as two large natural bridges. Remote    5    the modern cities, the site is 85 percent covered with trees. The Wulingyuan is known for five    6    (wonder): splendid peaks, unique rocks, quiet valleys, still waters and deep caves. It    7    (list) as a UNESCO World Natural Heritage Site in 1992. The entire area is covered with towering cliffs of sandstone and many forests which cover fantastic caves. The sandstone hills in Wulingyuan are unique in their large number. With the change of seasons and the weather, they     8     (constant) present different views to visitors. One of the     9    (high) mountains in this area is Tuerwangyue Feng or Rabbit Watching the Moon Peak, and Tianzi Mountain is particularly recommended for    10    (it) good view.

Humans think we've known enough about the ocean. You've     1     (probable) learned from textbooks that the majority of our planet's surface     2     (cover) by oceans.       3     you might not have learned, though, is that the planet's longest mountain range is underwater, or that ocean's depths are home     4     millions of tons of gold.

Yes, although the oceans are already deep enough, they' re even     5     (deep) when it comes to mystery (奥秘). And the following little—known facts about the ocean are sure     6     (blow) you out of the water.

The longest mountain range above water is the Andes,     7     is about 4, 300 miles long. The actual longest mountain range on Earth, however, is the Mid—Oceanic Ridge. It is around 40.390 miles long, snaking between     8     (continent).

There is around 20 million tons of gold in the ocean. If the ocean's gold were divided among every person equally, we would each receive nine pounds of gold. But it is just     9     impossible dream. The gold in the oceans is highly diluted (稀释). The ocean floor also has solid state gold     10     (attach) to it, but it's not cost—effective to mine it.