The Mogao Caves were added to the list in December 1987.     1     (locate) in the southeast of Gansu province, the Mogao caves are also known as the Thousand-Buddha Caves.

According to historical records, the carving of the caves     2     (start) in 366 AD and continued for about 1, 000 years. The 492 well-preserved cells and cave sanctuaries (保护区) in Mogao,     3     about 45, 000 square metres of wall paintings and more than 2, 000 painted sculptures are housed, are well-known     4     their statues and wall paintings.

Painted clay sculptures and wall paintings in the Mogao Grottoes have     5       (main) Buddhist themes, but they also include human figures,     6     (reflect) various societies and cultures of different times. Besides, they also show     7     (paint) styles of combination (结合) Of Chinese and Western arts.

In 1900, a total of 4, 500 valuable cultural relics dating from 256 AD to 1002     8       (find) in the Buddhist Sutra Cave. This is regarded as one of the world’s greatest Oriental cultural     9     (discovery).

It is important     10     Mogao Caves offers invaluable reference for studying the complex history of ancient China and Central Asia.

Many Chinese have learned the classic tale of The Foolish Old Man Removes the Mountains back in elementary school. In the story,     1     80-year-old man attempts to move two mountains standing     2     his way by himself. Failing to make much headway, he decides the job would fall on his children after him. But his perseverance impresses the gods who grant his wish.

One of the     3    (mountain) is Wangwu, located in Jiyuan, Henan Province. Wangwu Mountain, named a UNESCO world geological park in 2006,     4    (cover) an area of 270 square kilometres, with the peak at 1,715 metres, and has many Taoist temples.

“The Yugong (name of the man in the fable) spirit is     5     visitors look forward to here,” says Gu Luyu, a local tour guide. “People dressed in Red Army uniforms     6     (see) moving around earlier this month. They are from government offices and companies,” Gu says.

It takes about two hours to hike up to the peak from the foot. The peak is covered in mist in the mornings, especially on colder days. The cliffs and views below are magnificent,     7     (especial) when the mist clears. Visitors can also see monkeys near a temple at the mountaintop. They aren’t bothered by the     8     (present) of people.

“We will build a street     9     (feature) local folk culture,” Gu says of an ongoing construction project at the foothill of the mountain. The project includes setting up food and     10     (tradition) Chinese medicine stores along the street once completed.

3 . Widely known as the world’s first national park, Yellowstone National Park was built on March 1, 1872. Covering 3,472 square miles, Yellowstone runs through Wyoming and into Montana and Idaho, bringing with it deep canyons, rivers, forests, hot springs, and so on. The wonder of the world attracts millions of visitors each year because of its fantastic facts.

The park has a lake named Yellowstone Lake, which is situated at 7,733 feet above sea level, making it the largest high-elevation lake in all of North America. The lake is about 20 miles long and 14 miles wide, with about 141 miles of shoreline. Each winter, Yellowstone Lake is completely covered with two-foot-thick ice.

Aside from its unique lake, there are also 290 waterfalls found throughout the park, including the famous Yellowstone River Upper and Lower Falls, which end up in an area known as the “Grand Canyon of the Yellowstone River”. Visitors can view the falls from several different hiking trails (远足路径) and walkways.

With over 300 campsites and more than 900 miles of hiking trails inside the park—most of which are managed as wilderness areas—Yellowstone is the perfect destination for the most adventurous kind of outdoor enthusiast. It isn’t all difficult wilderness hiking, however, since the park also offers plenty of choices for shorter-day hikes on well-managed trails. There are even paved hikes that are wheelchair-accessible.

Also, you may see different kinds of animals along your hike in the park. Not only are there at least 67 species of mammals (哺乳动物) living in Yellowstone National Park, there are also approximately 300 species of bird and 16 species of fish. There’re at least two threatened species. The Canada lynx (猞猁) was listed as threatened in 2000, and parts of Yellowstone are still considered as the animal’s important natural home. They were found only 112 times in park history. What’s more, in 2018, the government restored (恢复) the protection to grey bears within Yellowstone.