Shennongjia is a household name in China because it’s the home of the legendary “wild man”. Its folk tale spans the generations.

Between 1976 and 1981, the Chinese Academy of Sciences organized three large scale     1       (science) investigations. They have collected hair, footprints and waste suspected of belonging     2     a “wild man”, but some experts argue that most were the result of bears, monkeys or even human beings. They failed     3     (uncover) the myth of “wild man”, but discovered the area’s rich biodiversity. Although several hundred people have claimed     4     (they) as eyewitnesses of some giant apelike creatures in Shennongjia, there is no tangible evidence to confirm the     5     (exist) of a “wild man”.

Nowadays, Shennongjia’s attraction is not merely about “wild man”. Its appeal     6     (be) more about its lively ecology, rich biodiversity and karst landforms. Shennongjia’s beauty varies over the year as nature     7     (take) its course. Tourists can enjoy flower blossoms in spring, be shaded from the summer heat, appreciate red leaves in autumn     8     go skiing in winter.

The “wild man” legend has been passed on for generations by word-of- mouth. In 2016, the legend of "wild man" in Shennongjia     9     (add) to Hubei province’s intangible cultural heritage list. Today, tourists can visit Wild Man Cave,     10     eyewitnesses claimed that they spotted the creatures, and see “wild man” sculptures.

The most famous, most traveled to, and most popular city in all of Australia is the city of Sydney. Sydney sits on the shores of Sydney Harbour and is an     1     (excite) city that offers an incredible experience to those travelers who come     2     (it) way.

Sydney is also blessed with being very near to a number of natural areas in the surrounding region     3     are also popular with visitors from outside the country. It doesn’t matter where someone is from, but they have probably already seen     4     (photo) of the famous Sydney Opera House and Sydney Harbour Bridge. Both of those are worth visiting and are     5     (extreme) interesting, but Sydney is much more     6     that.

Sydney also offers attractions like Sydney Olympic Park, Sydney Tower, and Taronga Zoo. There are also a wide variety of fun things to do in and around the Sydney area. Swimming and spending time at the beach     7     (be) popular activities and there are plenty of inviting coastal areas to choose     8     both within and just outside of Sydney.

Sydney is also very bicycle friendly and it is possible     9     (rent) bicycles and ride them all about the city. So much can be done during a visit to this     10     (wonder) international city that it is nearly impossible to see it all in one trip.

6 . On November 18, 2020, state workers who were tracking sheep were flying over the Utah desert in a helicopter. They noticed an object that is called monolith later, and landed nearby to see what it was. It was a shiny, three-sided metal column about 3.7 meters tall and planted solidly in the middle of the desert.

Bret Hutchings, who flew the helicopter, said, “I have to admit, that’s been about the strangest thing that I’ve come across out there in all the years of flying.” The shape of the monolith and its strange appearance in the desert has reminded people of a black monolith in the science fiction movie 2001: A Space Odyssey. In that movie, the monolith was also unexplained, but it appeared to have been created by creatures from another world.

Some people say that the monolith appears to be similar to artwork created by some well-known artists. But one of the possible artists died in 2011. Two others have said that the work is not theirs.

Still, people working for the government believe that the monolith was most likely put there as an art project. But they note that it was quite a difficult task. The monolith is in a hard-to-reach spot somewhere in the 93,000 square kilometers of Utah land managed by the US Bureau of Land Management (BLM). Delivering the column that seems valuable to that location in the traditional way would have required moving very heavy materials. They must have thought of other ways.

One metal statue in the desert may not cause too many problems for the sheep, but what if lots of people decide to visit the site? That’s one reason the DLM hasn’t released where it is. The BLM is also afraid that the monolith might encourage other artists to plant other similar artworks in the desert. That’s something that the department doesn’t want to happen. Anyway, the government still hasn’t decided whether to remove the monolith or let it remain.

    1    (lie) under waters across the globe are an estimated three million shipwrecks, all of     2     indicate human attempts over the centuries to explore Earth's furthest corners. While there is little land on our planet left unexplored, the vast sea bed almost     3    (remain) unknown.

Considering our limited knowledge, it's not surprising that exploration of the oceans constantly brings about discoveries in various     4    (science) fields.

First, many archaeological finds are made in shallow waters, including whole cities     5    (bury) underwater. The ruins offer precious information about the past. However, the challenges of pressure, darkness and intense cold at vast depths make     6     difficult to discover more of the past.

Amazing biological discoveries are also being made, like the barreleye living 6,000 meters below the ocean's surface. Such discoveries enable us     7    (have) a better knowledge of the capacity for life even in extreme circumstances.

Additionally, so far more new natural resources such as fire ice     8    (find) in oceans. Besides, the research conducted by China's underwater vessels helps scientists identify areas for deep-sea drilling and better understand how the sea bed was formed.

Humankind is entering a new age of oceanic discovery. Oceans will be as familiar     9     us as the land where we live through all-round international     10    (cooperate).

8 . There are around 100 tribes that live in global isolation, mostly in South America and India.

The Sentinelese(250 people)have lived on one of the Andaman Islands in Eastern India for 60, 000 years. They protect their island by fighting against people from outside. Their language is different from any other known language.

Another Andaman tribe is the Jarawa(300 people). In the past, they were independent and fought against anybody trying to make contact with them. But in 1998, the Indian govemment built a road across their land, and since then, they’ve had more contact with the outside world.

Some Amazon tribes avoid contact because of unhappy memories. The Mashco—Piro left their vegetable gardens after rubber companies killed most of their tribe at the beginning of the 20th century. Those who survived became nomadic(游牧的)and started hunting animals in the forest.

The Awa live in the Amazon forests of Brazil. Out of 350 members, 100 have no contact with the outside world. They left their villages and adopted a nomadic lifestyle around 1850 to escape attacks by Europeans. In the following years, farmers in nearby communities started cutting the trees to expand their farmland. The Awa lost most of their hunting land.

The few Amazon tribes that still exist are fighting to keep their traditional way of life.

Survival, an organization that fights for the rights of tribal people, says that uncontacted tribes are the most vulnerable(弱势的)humans on the planet and that’s why their environment should be unavailable to the rest of us.

After years of pressure, the organization got Brazil’s government to clear invaders from the Awa land. All non-Awa people are leaving so the tribe can get their forest back. But some think it’s impossible for tribes to stay isolated forever in a connected world. Contact will be made one day. So the question is：Whose choice should it be, ours or theirs?