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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.Sylvia Earle is one of the world's most famous marine scientists and a National Geographic Explorer-inResidence. She loves to go diving in the ocean. She has spent a lot of her life both in and under the waves. Earle has led more than a hundred expeditions and she set a record for solo diving in 1,000-metre deep water. In total, she has spent more than 7,000 hours underwater.Earle describes the first time she went to the ocean: ‘I was three years old and I got knocked over by a wave. The ocean certainly got my attention! It wasn’t frightening, it was thrilling. And since then I have been fascinated by life in the ocean.’In the past, Earle was the chief scientist of the National Oceanic and Atmospheric Administration in the USA. Now one of her jobs is with Google Earth’s Ocean. Earle’s special focus is on developing a global network of areas on the land and in the ocean. This network will protect and support the living systems that are important to the planet. She explains why this is important: ‘When I first went to the Gulf of Mexico in the 1950s, the sea looked like a blue infinity. It seemed to be too large and too wild to be damaged by the action of people. Then, in a few decades, not thousands of years, the blue wilderness of my childhood disappeared. By the end of the 20th century, about 90 percent of the sharks, tuna, turtles, whales and many other large creatures had disappeared from the Gulf. They had been there for millions of years.’Some people don’t understand why the ocean is so important to life on Earth. Earle explains that ‘the ocean is the foundation of our life support system. The ocean is alive. The living things in the ocean generate oxygen and take up carbon. If we don‟t have the ocean, we don’t have a planet that works.’The Gulf of Mexico has had many problems, especially after the Deepwater Horizon Oil disaster of 2010, but Earle says, ‘In 2003 I found positive signs in clear, deep water far from the mouth of the Mississippi River. It was full of life. Large areas of the Gulf are not damaged. Protecting the most important places will be good for the future of the Gulf and for all of us’Which of the statements about Sylvia Earle is NOT true?

Xem chi tiết 2.8 K lượt xem 5 năm trước

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.Sylvia Earle is one of the world's most famous marine scientists and a National Geographic Explorer-inResidence. She loves to go diving in the ocean. She has spent a lot of her life both in and under the waves. Earle has led more than a hundred expeditions and she set a record for solo diving in 1,000-metre deep water. In total, she has spent more than 7,000 hours underwater.Earle describes the first time she went to the ocean: ‘I was three years old and I got knocked over by a wave. The ocean certainly got my attention! It wasn’t frightening, it was thrilling. And since then I have been fascinated by life in the ocean.’In the past, Earle was the chief scientist of the National Oceanic and Atmospheric Administration in the USA. Now one of her jobs is with Google Earth’s Ocean. Earle’s special focus is on developing a global network of areas on the land and in the ocean. This network will protect and support the living systems that are important to the planet. She explains why this is important: ‘When I first went to the Gulf of Mexico in the 1950s, the sea looked like a blue infinity. It seemed to be too large and too wild to be damaged by the action of people. Then, in a few decades, not thousands of years, the blue wilderness of my childhood disappeared. By the end of the 20th century, about 90 percent of the sharks, tuna, turtles, whales and many other large creatures had disappeared from the Gulf. They had been there for millions of years.’Some people don’t understand why the ocean is so important to life on Earth. Earle explains that ‘the ocean is the foundation of our life support system. The ocean is alive. The living things in the ocean generate oxygen and take up carbon. If we don‟t have the ocean, we don’t have a planet that works.’The Gulf of Mexico has had many problems, especially after the Deepwater Horizon Oil disaster of 2010, but Earle says, ‘In 2003 I found positive signs in clear, deep water far from the mouth of the Mississippi River. It was full of life. Large areas of the Gulf are not damaged. Protecting the most important places will be good for the future of the Gulf and for all of us’Sylvia Earle is a scientist who _______.

Xem chi tiết 1.9 K lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 42 to 50.On a winter night last June, José Antonio Tuki, a 30-year-old artist on Easter Island, sat on Anakena beach and stared at the enormous human statues there – the moai. The statues are from four feet tall to 33 feet tall. Some weigh more than 80 tons. They were carved a long time ago, with stone tools, and then they weremoved up to 11 miles to the beach. Tuki stares at their faces and he feels a connection. ‘This is something that was produced by my ancestors’, he says. ‘How did they do it?’ The first Polynesians arrived at Rapa Nui (Easter Island), probably by canoe, hundreds of years ago. The island is 2,150 miles west of South America and 1,300 miles east of its nearest inhabited neighbour, Pitcairn. Nowadays 12 flights arrive every week from Chile, Peru and Tahiti. In 2011, 50,000 tourists – ten times theisland’s population – flew to Easter Island. Almost all of the jobs on Easter Island depend on tourism. And the tourists go there for only one thing: the moai. People around the world became curious about the statues after the Norwegian adventurer Thor Heyerdahl made Easter Island famous, and there are different theories about how the statues were moved to the beach. Many researchers think the statues were pulled along the ground using ropes and wood. Pulitzer Prize winner Jared Diamond has suggested that many people were needed to build and move themoai. As a result, the island’s trees were cut down for wood and to create farming land. This open land wasfragile and it was soon eroded by the strong winds, so it was very difficult to grow food. The situation was an early example of an ecological disaster, according to Diamond. On the other hand, archaeologists Terry Hunt of the University of Hawaii and Carl Lipo of California StateUniversity Long Beach have a more positive view of the island’s history. They suggest that the inhabitants actually pioneered a type of sustainable farming – they built thousands of circular stone walls, called manavai, and grew food inside them. And their theory about how the moai were moved is that they were ‘walked’ along using a system of only ropes and a few people.As José Tuki contemplates these enormous statues, he doesn’t mind that there are no definite answers about the history of his island. ‘I want to know the truth,’ he says, ‘but maybe knowing everything would take its power away’.      The story of the moai can teach us lessons about _________.

Xem chi tiết 790 lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 42 to 50.On a winter night last June, José Antonio Tuki, a 30-year-old artist on Easter Island, sat on Anakena beach and stared at the enormous human statues there – the moai. The statues are from four feet tall to 33 feet tall. Some weigh more than 80 tons. They were carved a long time ago, with stone tools, and then they weremoved up to 11 miles to the beach. Tuki stares at their faces and he feels a connection. ‘This is something that was produced by my ancestors’, he says. ‘How did they do it?’ The first Polynesians arrived at Rapa Nui (Easter Island), probably by canoe, hundreds of years ago. The island is 2,150 miles west of South America and 1,300 miles east of its nearest inhabited neighbour, Pitcairn. Nowadays 12 flights arrive every week from Chile, Peru and Tahiti. In 2011, 50,000 tourists – ten times theisland’s population – flew to Easter Island. Almost all of the jobs on Easter Island depend on tourism. And the tourists go there for only one thing: the moai. People around the world became curious about the statues after the Norwegian adventurer Thor Heyerdahl made Easter Island famous, and there are different theories about how the statues were moved to the beach. Many researchers think the statues were pulled along the ground using ropes and wood. Pulitzer Prize winner Jared Diamond has suggested that many people were needed to build and move themoai. As a result, the island’s trees were cut down for wood and to create farming land. This open land wasfragile and it was soon eroded by the strong winds, so it was very difficult to grow food. The situation was an early example of an ecological disaster, according to Diamond. On the other hand, archaeologists Terry Hunt of the University of Hawaii and Carl Lipo of California StateUniversity Long Beach have a more positive view of the island’s history. They suggest that the inhabitants actually pioneered a type of sustainable farming – they built thousands of circular stone walls, called manavai, and grew food inside them. And their theory about how the moai were moved is that they were ‘walked’ along using a system of only ropes and a few people.As José Tuki contemplates these enormous statues, he doesn’t mind that there are no definite answers about the history of his island. ‘I want to know the truth,’ he says, ‘but maybe knowing everything would take its power away’.    The word “fragile” in paragraph 4 is closest in meaning to ________.

Xem chi tiết 310 lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 42 to 50.On a winter night last June, José Antonio Tuki, a 30-year-old artist on Easter Island, sat on Anakena beach and stared at the enormous human statues there – the moai. The statues are from four feet tall to 33 feet tall. Some weigh more than 80 tons. They were carved a long time ago, with stone tools, and then they weremoved up to 11 miles to the beach. Tuki stares at their faces and he feels a connection. ‘This is something that was produced by my ancestors’, he says. ‘How did they do it?’ The first Polynesians arrived at Rapa Nui (Easter Island), probably by canoe, hundreds of years ago. The island is 2,150 miles west of South America and 1,300 miles east of its nearest inhabited neighbour, Pitcairn. Nowadays 12 flights arrive every week from Chile, Peru and Tahiti. In 2011, 50,000 tourists – ten times theisland’s population – flew to Easter Island. Almost all of the jobs on Easter Island depend on tourism. And the tourists go there for only one thing: the moai. People around the world became curious about the statues after the Norwegian adventurer Thor Heyerdahl made Easter Island famous, and there are different theories about how the statues were moved to the beach. Many researchers think the statues were pulled along the ground using ropes and wood. Pulitzer Prize winner Jared Diamond has suggested that many people were needed to build and move themoai. As a result, the island’s trees were cut down for wood and to create farming land. This open land wasfragile and it was soon eroded by the strong winds, so it was very difficult to grow food. The situation was an early example of an ecological disaster, according to Diamond. On the other hand, archaeologists Terry Hunt of the University of Hawaii and Carl Lipo of California StateUniversity Long Beach have a more positive view of the island’s history. They suggest that the inhabitants actually pioneered a type of sustainable farming – they built thousands of circular stone walls, called manavai, and grew food inside them. And their theory about how the moai were moved is that they were ‘walked’ along using a system of only ropes and a few people.As José Tuki contemplates these enormous statues, he doesn’t mind that there are no definite answers about the history of his island. ‘I want to know the truth,’ he says, ‘but maybe knowing everything would take its power away’.    Hunt and Lipo‟s theory about the movement of the statues involves using ________.

Xem chi tiết 495 lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 42 to 50.On a winter night last June, José Antonio Tuki, a 30-year-old artist on Easter Island, sat on Anakena beach and stared at the enormous human statues there – the moai. The statues are from four feet tall to 33 feet tall. Some weigh more than 80 tons. They were carved a long time ago, with stone tools, and then they weremoved up to 11 miles to the beach. Tuki stares at their faces and he feels a connection. ‘This is something that was produced by my ancestors’, he says. ‘How did they do it?’ The first Polynesians arrived at Rapa Nui (Easter Island), probably by canoe, hundreds of years ago. The island is 2,150 miles west of South America and 1,300 miles east of its nearest inhabited neighbour, Pitcairn. Nowadays 12 flights arrive every week from Chile, Peru and Tahiti. In 2011, 50,000 tourists – ten times theisland’s population – flew to Easter Island. Almost all of the jobs on Easter Island depend on tourism. And the tourists go there for only one thing: the moai. People around the world became curious about the statues after the Norwegian adventurer Thor Heyerdahl made Easter Island famous, and there are different theories about how the statues were moved to the beach. Many researchers think the statues were pulled along the ground using ropes and wood. Pulitzer Prize winner Jared Diamond has suggested that many people were needed to build and move themoai. As a result, the island’s trees were cut down for wood and to create farming land. This open land wasfragile and it was soon eroded by the strong winds, so it was very difficult to grow food. The situation was an early example of an ecological disaster, according to Diamond. On the other hand, archaeologists Terry Hunt of the University of Hawaii and Carl Lipo of California StateUniversity Long Beach have a more positive view of the island’s history. They suggest that the inhabitants actually pioneered a type of sustainable farming – they built thousands of circular stone walls, called manavai, and grew food inside them. And their theory about how the moai were moved is that they were ‘walked’ along using a system of only ropes and a few people.As José Tuki contemplates these enormous statues, he doesn’t mind that there are no definite answers about the history of his island. ‘I want to know the truth,’ he says, ‘but maybe knowing everything would take its power away’.  Jared Diamond thinks that _________.

Xem chi tiết 427 lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 42 to 50.On a winter night last June, José Antonio Tuki, a 30-year-old artist on Easter Island, sat on Anakena beach and stared at the enormous human statues there – the moai. The statues are from four feet tall to 33 feet tall. Some weigh more than 80 tons. They were carved a long time ago, with stone tools, and then they weremoved up to 11 miles to the beach. Tuki stares at their faces and he feels a connection. ‘This is something that was produced by my ancestors’, he says. ‘How did they do it?’ The first Polynesians arrived at Rapa Nui (Easter Island), probably by canoe, hundreds of years ago. The island is 2,150 miles west of South America and 1,300 miles east of its nearest inhabited neighbour, Pitcairn. Nowadays 12 flights arrive every week from Chile, Peru and Tahiti. In 2011, 50,000 tourists – ten times theisland’s population – flew to Easter Island. Almost all of the jobs on Easter Island depend on tourism. And the tourists go there for only one thing: the moai. People around the world became curious about the statues after the Norwegian adventurer Thor Heyerdahl made Easter Island famous, and there are different theories about how the statues were moved to the beach. Many researchers think the statues were pulled along the ground using ropes and wood. Pulitzer Prize winner Jared Diamond has suggested that many people were needed to build and move themoai. As a result, the island’s trees were cut down for wood and to create farming land. This open land wasfragile and it was soon eroded by the strong winds, so it was very difficult to grow food. The situation was an early example of an ecological disaster, according to Diamond. On the other hand, archaeologists Terry Hunt of the University of Hawaii and Carl Lipo of California StateUniversity Long Beach have a more positive view of the island’s history. They suggest that the inhabitants actually pioneered a type of sustainable farming – they built thousands of circular stone walls, called manavai, and grew food inside them. And their theory about how the moai were moved is that they were ‘walked’ along using a system of only ropes and a few people.As José Tuki contemplates these enormous statues, he doesn’t mind that there are no definite answers about the history of his island. ‘I want to know the truth,’ he says, ‘but maybe knowing everything would take its power away’.The moai __________.

Xem chi tiết 541 lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 42 to 50.On a winter night last June, José Antonio Tuki, a 30-year-old artist on Easter Island, sat on Anakena beach and stared at the enormous human statues there – the moai. The statues are from four feet tall to 33 feet tall. Some weigh more than 80 tons. They were carved a long time ago, with stone tools, and then they weremoved up to 11 miles to the beach. Tuki stares at their faces and he feels a connection. ‘This is something that was produced by my ancestors’, he says. ‘How did they do it?’ The first Polynesians arrived at Rapa Nui (Easter Island), probably by canoe, hundreds of years ago. The island is 2,150 miles west of South America and 1,300 miles east of its nearest inhabited neighbour, Pitcairn. Nowadays 12 flights arrive every week from Chile, Peru and Tahiti. In 2011, 50,000 tourists – ten times theisland’s population – flew to Easter Island. Almost all of the jobs on Easter Island depend on tourism. And the tourists go there for only one thing: the moai. People around the world became curious about the statues after the Norwegian adventurer Thor Heyerdahl made Easter Island famous, and there are different theories about how the statues were moved to the beach. Many researchers think the statues were pulled along the ground using ropes and wood. Pulitzer Prize winner Jared Diamond has suggested that many people were needed to build and move themoai. As a result, the island’s trees were cut down for wood and to create farming land. This open land wasfragile and it was soon eroded by the strong winds, so it was very difficult to grow food. The situation was an early example of an ecological disaster, according to Diamond. On the other hand, archaeologists Terry Hunt of the University of Hawaii and Carl Lipo of California StateUniversity Long Beach have a more positive view of the island’s history. They suggest that the inhabitants actually pioneered a type of sustainable farming – they built thousands of circular stone walls, called manavai, and grew food inside them. And their theory about how the moai were moved is that they were ‘walked’ along using a system of only ropes and a few people.As José Tuki contemplates these enormous statues, he doesn’t mind that there are no definite answers about the history of his island. ‘I want to know the truth,’ he says, ‘but maybe knowing everything would take its power away’.Studying the moai __________.

Xem chi tiết 1.2 K lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 42 to 50.On a winter night last June, José Antonio Tuki, a 30-year-old artist on Easter Island, sat on Anakena beach and stared at the enormous human statues there – the moai. The statues are from four feet tall to 33 feet tall. Some weigh more than 80 tons. They were carved a long time ago, with stone tools, and then they weremoved up to 11 miles to the beach. Tuki stares at their faces and he feels a connection. ‘This is something that was produced by my ancestors’, he says. ‘How did they do it?’ The first Polynesians arrived at Rapa Nui (Easter Island), probably by canoe, hundreds of years ago. The island is 2,150 miles west of South America and 1,300 miles east of its nearest inhabited neighbour, Pitcairn. Nowadays 12 flights arrive every week from Chile, Peru and Tahiti. In 2011, 50,000 tourists – ten times theisland’s population – flew to Easter Island. Almost all of the jobs on Easter Island depend on tourism. And the tourists go there for only one thing: the moai. People around the world became curious about the statues after the Norwegian adventurer Thor Heyerdahl made Easter Island famous, and there are different theories about how the statues were moved to the beach. Many researchers think the statues were pulled along the ground using ropes and wood. Pulitzer Prize winner Jared Diamond has suggested that many people were needed to build and move themoai. As a result, the island’s trees were cut down for wood and to create farming land. This open land wasfragile and it was soon eroded by the strong winds, so it was very difficult to grow food. The situation was an early example of an ecological disaster, according to Diamond. On the other hand, archaeologists Terry Hunt of the University of Hawaii and Carl Lipo of California StateUniversity Long Beach have a more positive view of the island’s history. They suggest that the inhabitants actually pioneered a type of sustainable farming – they built thousands of circular stone walls, called manavai, and grew food inside them. And their theory about how the moai were moved is that they were ‘walked’ along using a system of only ropes and a few people.As José Tuki contemplates these enormous statues, he doesn’t mind that there are no definite answers about the history of his island. ‘I want to know the truth,’ he says, ‘but maybe knowing everything would take its power away’.The people of Easter Island today _________.

Xem chi tiết 391 lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 42 to 50.On a winter night last June, José Antonio Tuki, a 30-year-old artist on Easter Island, sat on Anakena beach and stared at the enormous human statues there – the moai. The statues are from four feet tall to 33 feet tall. Some weigh more than 80 tons. They were carved a long time ago, with stone tools, and then they weremoved up to 11 miles to the beach. Tuki stares at their faces and he feels a connection. ‘This is something that was produced by my ancestors’, he says. ‘How did they do it?’ The first Polynesians arrived at Rapa Nui (Easter Island), probably by canoe, hundreds of years ago. The island is 2,150 miles west of South America and 1,300 miles east of its nearest inhabited neighbour, Pitcairn. Nowadays 12 flights arrive every week from Chile, Peru and Tahiti. In 2011, 50,000 tourists – ten times theisland’s population – flew to Easter Island. Almost all of the jobs on Easter Island depend on tourism. And the tourists go there for only one thing: the moai. People around the world became curious about the statues after the Norwegian adventurer Thor Heyerdahl made Easter Island famous, and there are different theories about how the statues were moved to the beach. Many researchers think the statues were pulled along the ground using ropes and wood. Pulitzer Prize winner Jared Diamond has suggested that many people were needed to build and move themoai. As a result, the island’s trees were cut down for wood and to create farming land. This open land wasfragile and it was soon eroded by the strong winds, so it was very difficult to grow food. The situation was an early example of an ecological disaster, according to Diamond. On the other hand, archaeologists Terry Hunt of the University of Hawaii and Carl Lipo of California StateUniversity Long Beach have a more positive view of the island’s history. They suggest that the inhabitants actually pioneered a type of sustainable farming – they built thousands of circular stone walls, called manavai, and grew food inside them. And their theory about how the moai were moved is that they were ‘walked’ along using a system of only ropes and a few people.As José Tuki contemplates these enormous statues, he doesn’t mind that there are no definite answers about the history of his island. ‘I want to know the truth,’ he says, ‘but maybe knowing everything would take its power away’.On Easter Island today, the statues _________.

Xem chi tiết 468 lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 42 to 50.On a winter night last June, José Antonio Tuki, a 30-year-old artist on Easter Island, sat on Anakena beach and stared at the enormous human statues there – the moai. The statues are from four feet tall to 33 feet tall. Some weigh more than 80 tons. They were carved a long time ago, with stone tools, and then they weremoved up to 11 miles to the beach. Tuki stares at their faces and he feels a connection. ‘This is something that was produced by my ancestors’, he says. ‘How did they do it?’ The first Polynesians arrived at Rapa Nui (Easter Island), probably by canoe, hundreds of years ago. The island is 2,150 miles west of South America and 1,300 miles east of its nearest inhabited neighbour, Pitcairn. Nowadays 12 flights arrive every week from Chile, Peru and Tahiti. In 2011, 50,000 tourists – ten times theisland’s population – flew to Easter Island. Almost all of the jobs on Easter Island depend on tourism. And the tourists go there for only one thing: the moai. People around the world became curious about the statues after the Norwegian adventurer Thor Heyerdahl made Easter Island famous, and there are different theories about how the statues were moved to the beach. Many researchers think the statues were pulled along the ground using ropes and wood. Pulitzer Prize winner Jared Diamond has suggested that many people were needed to build and move themoai. As a result, the island’s trees were cut down for wood and to create farming land. This open land wasfragile and it was soon eroded by the strong winds, so it was very difficult to grow food. The situation was an early example of an ecological disaster, according to Diamond. On the other hand, archaeologists Terry Hunt of the University of Hawaii and Carl Lipo of California StateUniversity Long Beach have a more positive view of the island’s history. They suggest that the inhabitants actually pioneered a type of sustainable farming – they built thousands of circular stone walls, called manavai, and grew food inside them. And their theory about how the moai were moved is that they were ‘walked’ along using a system of only ropes and a few people.As José Tuki contemplates these enormous statues, he doesn’t mind that there are no definite answers about the history of his island. ‘I want to know the truth,’ he says, ‘but maybe knowing everything would take its power away’.The Easter Island statues __________.

Xem chi tiết 782 lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 36to 41.The Ring of Fire is an enormous chain of volcanoes all around the Pacific Ocean. The ring goes from New Zealand up to Asia and across the ocean to Alaska. From Alaska, the ring continues southward along the coast of both North and South America. More than seventy-five percent of the world's volcanoes are located in this ring. Scientists are interested in studying the Ring of Fire because they can observe plate tectonics at work there. In 1912, a German scientist, Alfred Wegener, came up with the first theory of land movement. Wegener said continents are made up of lighter rocks resting on heavier material. Similar to the way large things move while floating on water, Wegener suggested that the positions of the continents were not fixed, but that they moved slightly. Later, scientists discovered most of Wegener's ideas were right on the mark. They then developed the theory called plate tectonics. According to plate tectonics, the surface of the Earth consists of a number of enormous plates or sections of rock, each about eighty kilometers thick. The plates float and slowly move at speeds between one to ten centimeters every year. That is about the rate your fingernails grow! Within the Ring of Fire, new material for the Earth's plates is constantly being created as hot liquid rock called magma flows from the center of the Earth up to the ocean floor. All the existing plates on the Earth's surface have to move slightly to make room for the new material. As plates move both away from and toward each other, they run into each other. When they hit each other, one plate might move under another. This process is called subduction. Subduction frequently causes earthquakes. It may also result in the bottom plate melting due to the extreme temperatures under the top plate. The magma created in this process can rise to the Earth's surface and come out through volcanoes, as can be seen along the Ring of Fire.Which question is NOT answered in the reading?

Xem chi tiết 714 lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 36to 41.The Ring of Fire is an enormous chain of volcanoes all around the Pacific Ocean. The ring goes from New Zealand up to Asia and across the ocean to Alaska. From Alaska, the ring continues southward along the coast of both North and South America. More than seventy-five percent of the world's volcanoes are located in this ring. Scientists are interested in studying the Ring of Fire because they can observe plate tectonics at work there. In 1912, a German scientist, Alfred Wegener, came up with the first theory of land movement. Wegener said continents are made up of lighter rocks resting on heavier material. Similar to the way large things move while floating on water, Wegener suggested that the positions of the continents were not fixed, but that they moved slightly. Later, scientists discovered most of Wegener's ideas were right on the mark. They then developed the theory called plate tectonics. According to plate tectonics, the surface of the Earth consists of a number of enormous plates or sections of rock, each about eighty kilometers thick. The plates float and slowly move at speeds between one to ten centimeters every year. That is about the rate your fingernails grow! Within the Ring of Fire, new material for the Earth's plates is constantly being created as hot liquid rock called magma flows from the center of the Earth up to the ocean floor. All the existing plates on the Earth's surface have to move slightly to make room for the new material. As plates move both away from and toward each other, they run into each other. When they hit each other, one plate might move under another. This process is called subduction. Subduction frequently causes earthquakes. It may also result in the bottom plate melting due to the extreme temperatures under the top plate. The magma created in this process can rise to the Earth's surface and come out through volcanoes, as can be seen along the Ring of Fire.What is NOT a result of shifting tectonic plates?

Xem chi tiết 2 K lượt xem 5 năm trước

Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 36to 41.The Ring of Fire is an enormous chain of volcanoes all around the Pacific Ocean. The ring goes from New Zealand up to Asia and across the ocean to Alaska. From Alaska, the ring continues southward along the coast of both North and South America. More than seventy-five percent of the world's volcanoes are located in this ring. Scientists are interested in studying the Ring of Fire because they can observe plate tectonics at work there. In 1912, a German scientist, Alfred Wegener, came up with the first theory of land movement. Wegener said continents are made up of lighter rocks resting on heavier material. Similar to the way large things move while floating on water, Wegener suggested that the positions of the continents were not fixed, but that they moved slightly. Later, scientists discovered most of Wegener's ideas were right on the mark. They then developed the theory called plate tectonics. According to plate tectonics, the surface of the Earth consists of a number of enormous plates or sections of rock, each about eighty kilometers thick. The plates float and slowly move at speeds between one to ten centimeters every year. That is about the rate your fingernails grow! Within the Ring of Fire, new material for the Earth's plates is constantly being created as hot liquid rock called magma flows from the center of the Earth up to the ocean floor. All the existing plates on the Earth's surface have to move slightly to make room for the new material. As plates move both away from and toward each other, they run into each other. When they hit each other, one plate might move under another. This process is called subduction. Subduction frequently causes earthquakes. It may also result in the bottom plate melting due to the extreme temperatures under the top plate. The magma created in this process can rise to the Earth's surface and come out through volcanoes, as can be seen along the Ring of Fire.What does “subduction” mean in this reading?

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Read the following passage andmark the letter A, B, C, or D on your answer sheet to indicate the correctanswerto each ofthe questions from 36to 41.The Ring of Fire is an enormous chain of volcanoes all around the Pacific Ocean. The ring goes from New Zealand up to Asia and across the ocean to Alaska. From Alaska, the ring continues southward along the coast of both North and South America. More than seventy-five percent of the world's volcanoes are located in this ring. Scientists are interested in studying the Ring of Fire because they can observe plate tectonics at work there. In 1912, a German scientist, Alfred Wegener, came up with the first theory of land movement. Wegener said continents are made up of lighter rocks resting on heavier material. Similar to the way large things move while floating on water, Wegener suggested that the positions of the continents were not fixed, but that they moved slightly. Later, scientists discovered most of Wegener's ideas were right on the mark. They then developed the theory called plate tectonics. According to plate tectonics, the surface of the Earth consists of a number of enormous plates or sections of rock, each about eighty kilometers thick. The plates float and slowly move at speeds between one to ten centimeters every year. That is about the rate your fingernails grow! Within the Ring of Fire, new material for the Earth's plates is constantly being created as hot liquid rock called magma flows from the center of the Earth up to the ocean floor. All the existing plates on the Earth's surface have to move slightly to make room for the new material. As plates move both away from and toward each other, they run into each other. When they hit each other, one plate might move under another. This process is called subduction. Subduction frequently causes earthquakes. It may also result in the bottom plate melting due to the extreme temperatures under the top plate. The magma created in this process can rise to the Earth's surface and come out through volcanoes, as can be seen along the Ring of Fire.According to the reading, which is true about the Ring of Fire?

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