Five million people visit the Grand Canyon National Park every year.The first sight of the canyon can leave visitors speechless.     1    (depend) on the time of day，the sun lights up the rock walls in red，orange，and golden colors.The bright colors are the result of minerals in the rock.Their appearance changes     2    (endless)．At sunset，the canyon walls display red and gold hues.Then they take     3     softer colors of blue，purple，and green.

Most visitors walk along paths part­way down the canyon.     4     takes several hours to walk to the bottom，and even     5    (long) to climb up.Some visitors choose to ride mules(骡) to the bottom of the canyon.Mules are strong animals     6     look similar to horses.

Visitors can explore the Grand Canyon in other     7    (way)．Hundreds of thousands of people see the canyon by air each year.They pay a helicopter or     8     airplane pilot to fly them above and around the canyon.

Visitors can also see the Grand Canyon from a huge glass walkway     9    (call) the Skywalk.The Hualapai Indians     10    (build) it to increase tourism at the reservation.

Want to have fun with characters like Harry Potter or Kung Fu Panda? You will get the chance to do so by     1     (visit) the Universal Beijing Resort (UBR).

Located in Beijing, the UBR is the     2     (five) Universal Studios theme park     3     (global), and the first in China. As planned, it’s expected to speed the establishment of Beijing as     4     international business center and build up the     5     (confident) of China’s culture and tourism industry.

The UBR is fully aware     6     cultural preferences of Chinese friends. For example, the Kung Fu Panda Land of Awesomeness has pavilions, small bridges and flowing water. Lanterns are hung in many places. Accompanied with Chinese music, visitors can eat     7     (variety) of Chinese snacks in restaurants     8     look like ancient buildings.

Apart from Chinese cultural factors, “made-in-China” also shines in the UBR. For example, there is a huge rock in the theme land of Jurassic World, which     9     (make) up of more than 10,000 steel parts built by Chinese engineers. Visitors can see a rock standing tall and spring water falling from a height of 50 meters. It took an amount of wisdom and power     10     (build) such a fantastic park.

The Baiheliang Underwater Museum,     1    (build) around the White Crane Ridge (白鹤梁) of Fuling District in Chongqing, is China’s first underwater museum. The museum is located on the Yangtze River near the Three Gorges Dam; it opened on May 18, 2009. The    2    (construct) of the museum began in 2002.

Baiheliang has been submerged (淹没) underwater since    3     building of the Three Gorges Dam. It consists     4    a stone ridge that is 1, 600 meters by 15 meters in size, which is now submerged under about 40 meters of water. Before the Three Gorges Dam was built, the ridge was only submerged during the summer and fall. The ridge and the carvings on it were only exposed and     5    (clear) visible when the water level of the Yangtze River dropped during the winter. The inscriptions (题刻)     6    (record) water data about the Yangtze River from the Tang Dynasty onward as well as    7    (poem) written calligraphically could     8    (view) by visitors.

The ridge has now been enclosed in an arch-shaped glass covering    9     is filled with water to ensure equal pressure on both sides. Two underwater passages with long moving stairways have been fixed from the riverbank, enabling museum visitors     10    (enter) and view the inscriptions and fish carvings.

Shiping County is located in the south of Yunnan Province, northwest of Honghe Hani and Yi Autonomous Prefecture, with     1     area of 3,037 square kilometers. According to the     2     (statistic) in 2016, the total population of Shiping was more than 316,000, of which Yi, Dai and Hani     3     (minor) groups accounted for more than 50%.

Since ancient times, great importance     4     (attach) to education and culture in Shiping, which gives birth to     5     (talent) people from generation to generation.     6     (know) for its cultural heritage, Shiping holds a special reputation     7     “the land of literature in the south of Yunnan” and “the hometown of Number One Scholars”. Haicai Songs, Dance with Cigarette cases, and Black Copper Silver process are included in the national intangible cultural heritage list. Moreover,     8     attract foodies most are the famous Tofu and barbecue. It is also worth mentioning that Yilong Lake, surrounded by a     9     (careful) designed bike lane, has gained popularity among cyclists at home and abroad. In a word, if you are looking for a low-cost, peaceful and relaxing spot     10     (enjoy) a few leisurely days, Shiping won’t let you down!

The Honghe Hani Rice Terraces(梯田), in southern Yunnan, China, cover a huge 16, 603-hectare area. The terraces,     1    (know)to all of the world now, were made out of a thick forest by the Hani people. The terraces rise at different angles from a shallow 15°    2     a steep 75°, forming a wonderful landscape(景观)that     3    (be)rare in the world.

In 2003, the terraced fields were     4    (official)recognized by UNESCO as a World Cultural and Natural Heritage site. About 1,300 years ago, the Hani people first     5    (come)to the steep mountains. They struggled against the difficult terrain(地形), successfully creating the terraces, where they grew rice in order to make     6    (they) living. Over the past 1,300 years, the Hani people have developed a complex system of channels     7    (bring)water from the forested mountaintops. They show great appreciation for natural phenomena such as rivers, mountains, the sun, fire     8     the moon. They have also created a complete farming system     9     involves cattle, ducks, and fish and supports the     10    (produce)of red rice, the area's main crop.

The landscape changes through the year. In April the terraces are all green as rice starts to grow; in later parts of the year it is yellowish brown as the rice ripens. In February, the terraces become bare earth, with the water reflecting(反射)the sky.

On the north bank of Fuxian Lake in Chengjiang County, Yunnan Province sits a straw-hat-shaped mountain     1     (call) Maotian Mountain,     2     a 512-hectare site is praised as a “world-class treasure trove of fossils” by the international scientific community. On July 1,1984, young paleontologists in China discovered a fossil of the arthropod (节肢动物化石) with a long tail in Maotian Mountain. “    3     we had studied in China were just shell of fossils. The arthropods, lifelike fossils with legs, which belonged to fossils of soft-bodied animals, are     4     game changer in the research of China’s paleontology (古生物学)”, Hou Xianguang, a paleontologist said.

Scientists have obtained a large number of research results on Chengjiang Fossil Site. The reason why Chengjiang fauna (动物群) is     5     great significance is that it is closely related to the emergence of the animal tree of life.

Up to now, more than 20 phyla and more than 280 species     6     (record)in the Chengjiang Fossil Site, of which, 80% are new species. On July 1, 2012, the Chengjiang Fossil Site     7     (be) inscribed on the World Heritage List by UNESCO,     8     (become) China’ s first World Heritage Site for paleontological fossils.

The UNESCO evaluation says the Chengjiang Fossil Site is one of the     9     (early) records of a complex marine ecosystem of the early Cambrian communities. The property displays excellent quality of fossil     10     (preserve). It presents an exceptional record of the rapid diversification of life on Earth during the early Cambrian period.

Every day we use energy. We use it for cooking, for heating and for lighting our cities. The energy comes from many different     1     (source). It can come from the sun, wind and water, but the energy we depend on the most comes from deep inside the Earth. These include coal, oil, and natural gas.

These fuels come from the remains of plants and animals. It takes millions of years     2     (make) them. However, with the world’s population     3    (grow), more and more of these fuels are dug up from the ground. Yet these fuels are non-renewable. When they     4    (use) up, they will be gone forever.

We need to have a strong sense of     5    (responsible) and it’s high time for us to think about     6     we can help save energy and preserve these fuels.

What about turning off anything     7     (electricity) we are not using? That’s a start! We can also recycle things such as newspapers, cans, bottles, and plastic—including plastic bags. Plastic bags start out as either oil     8     coal, and one big city can use millions of plastic bags in a year. When we use recycled things, it takes less energy     9     making something new.

Cars consume a lot of fuel, but there     10     (be) a variety of measures that car owners can take to preserve fuel. Try asking your family whether we can take a bus or walk instead of using the car.