Name what has changed in the position of North and South America, Africa, Oceania, and Antarctica ov

Basically agree upstairs, if you want to know more about it, you look at Wegener's "Continental Drift Hypothesis".

Atlantic Ocean. The Atlantic Ocean is surrounded by five continents: South America, North America, Antarctica, Europe, and Africa.

Basic introduction. The Atlantic Ocean (English: Atlantic Ocean) is the second largest ocean in the world, accounting for nearly 20% of the earth's surface area, with an original area of 10,000 square kilometers, after the establishment of the Southern Ocean, the area was adjusted to 10,000 square kilometers, with an average depth of 3,627 meters, and the deepest Puerto Rican Trench is 9,219 meters deep.

The Atlantic Ocean is in the shape of an "S" and is divided into the North Atlantic and the South Atlantic by the Red Absolute Front.

In addition, the Atlantic Ocean has several affiliated seas, the larger ones such as the Mediterranean, the Caribbean, the North Sea, the Baltic Sea, the Gulf of Mexico, etc. The Atlantic Ocean is a long way from north to south, so the climate is diverse, from the polar climate of Greenland in the north to the tropical desert or rainforest climate off the coast of West Africa and Brazil. In Europe, the United States, Canada, Brazil and the waters south of the Gulf of Guinea, high winds and waves are perennial.

It's the Indian Ocean. The Indian Ocean is the third largest ocean in the world, with an area of 70.56 million square kilometers.

It occupies about the total area of the world's oceans.

The Indian Ocean is located in Asia, Oceania.

Africa and Antarctica.

Between. The Indian Ocean is bordered by Africa to the west, Oceania to the east, Asia to the north, and Antarctica to the south.

Location of the Indian Ocean.

The Indian Ocean is surrounded by Asia, Africa, Oceania, and Antarctica.

The Earth's oceans are interspersed and divided by land, forming four oceans that are connected to each other: the Pacific Ocean, the Indian Ocean, the Arctic Ocean, and the Atlantic Ocean. The Atlantic Ocean is located between North America, South America, Europe, Africa, Antarctica. The Pacific Ocean is located between Asia, North America, South America, Antarctica, and Oceania.

One by one, the continents and disks bordering the four oceans are revealed

1. The Indian Ocean.

Located between Asia, Africa, Antarctica and Oceania;

II. The Pacific.

Located between Asia, North America, South America, Antarctica, and Oceania;

3. Atlantic Ocean.

Located between Europe, Africa, Antarctica and Oceania;

4. The Arctic Ocean.

Located between Asia, Europe and North America.

The Amazon River is the longest river in South America. Located in the northern part of South America, the Amazon River is the world's largest river in terms of flow, basin and tributaries, and is the second longest river in the world.

It flows from west to east, with its westernmost source being the towering Andes Mountains, less than 160 kilometers from the Pacific Ocean, with its estuary in the Atlantic Ocean, and the amount of water that flows into the Atlantic Ocean every year is about one trillion cubic meters, equivalent to 1 6 of the total amount of water injected into the oceans by the world's rivers.

Amazon River (English: Amazon River; Portuguese: rio amazonas; Spanish:

río amazonas;Translation"Amazon River"), located in the northern part of South America, is the largest river in the world in terms of flow, basin and tributaries. Since the length of the river is inconclusive, there are many different versions of the length of the Amazon, one of which is the common 6,400 km.

The Amazon River is the second longest river in the world and the world's largest river, with a flow of 10,000 cubic meters per second, which is several times larger than the combined flow of the other three major rivers, the Nile (Africa), the Yangtze River (China), and the Mississippi River (the United States), which is about equivalent to the flow of seven Yangtze rivers, accounting for 20% of the world's river flow; The basin covers an area of 10,000 square kilometers, accounting for 40% of the total area of South America; The number of tributaries is more than 10,000.

The river has 15,000 tributaries and is spread over a large area of South America, with a basin the size of almost the entire Australia. Among the tributaries, seven are more than 1,600 kilometers long; The longest is the Madeira River, which is more than 3,200 kilometers long. Most of the rainforests in the Amazon basin are located in Brazil, about twice the size of India, and no more than 200 meters above sea level.

The Amazon River is flat, so the section of the river affected by the tides of the Atlantic Ocean is 966 kilometers long, as far as Óbidos.

Answer: d

Analysis: In the first space, according to "painting the Antarctic as a boundless ocean, or as a circular island" and "no one has ever seen it", the passage emphasizes that people do not know much about the Antarctic, item b is "mysterious", and item d "knows nothing" is in line with the meaning of the text. Item A "vast" describes it as extremely broad; (c) "Inaccessible" refers to remote and inhospitable places where few people have visited, and the passage does not emphasize the vast territory of Antarctica or the small number of people, and it is excluded.

Second, according to "because no one has ever seen this land", the geographer's drawing of Antarctica is based only on his assumptions, and the "imagination" in item D fits the context of the passage and is elected. (b) "Understanding" means that the analysis is based on facts or known truths, which is contrary to the context and is excluded.

The boundary between Asia and Africa is the Suez Canal. To the east of the Suez Canal is Asia. The dividing line between Asia and Europe is the Ural Mountains, the Ural River, the Caspian Sea, the Greater Caucasus Mountains, the Turkish Strait, the Mediterranean Sea and the Black Sea.

Asia is east of the Ural Mountains and south of the Greater Caucasus Mountains, the Caspian Sea and the Black Sea. The center line of the Bering Strait watercourse is the continental boundary between Asia and North America.

Asia is bordered by the Arctic Ocean to the north, the Indian Ocean to the south, and the Pacific Ocean to the east.