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Câu hỏi:

10/07/2024 339

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 35 to 42 

      Scientists have discovered that for the last 160,000 years, at least, there has been a consistent relationship between the amount of carbon dioxide in the air and the average temperature of the planet. The importance of carbon dioxide in regulating the Earth's temperature was confirmed by scientists working in eastern Antarctica. Drilling down into a glacier, they extracted a mile-long cylinder of ice from the hole. The glacier had formed as layer upon layer of snow accumulated year after year. Thus, drilling into the ice was tantamount to drilling back through time.  

     The deepest sections of the core are composed of water that fell as snow 160,000 years ago. Scientists in Grenoble, France, fractured portions of the core and measured the composition of ancient air released from bubbles in the ice. Instruments were used to measure the ratio of certain isotopes in the frozen water to get an idea of the prevailing atmospheric temperature at the time when that particular bit of water became locked in the glacier.  

     The result is a remarkable unbroken record of temperature and of atmospheric levels of carbon dioxide. Almost every time the chill of an ice age descended on the planet, carbon dioxide levels dropped. When the global temperature dropped 9°F (5°C), carbon dioxide levels dropped to 190 parts per million or so. Generally, as each ice age ended and the Earth basked in a warm interglacial period, carbon dioxide levels were around 280 parts per million. Through the 160,000 years of that ice record, the level of carbon dioxide in the atmosphere fluctuated between 190 and 280 parts per million, but never rose much higher until the Industrial Revolution beginning in the eighteenth century and continuing today.  

          There is indirect evidence that the link between carbon dioxide levels and global temperature change goes back much further than the glacial record. Carbon dioxide levels may have been much greater than the current concentration during the Carboniferous period, 360 to 285 million years ago. The period was named for a profusion of plant life whose buried remains produced a large fraction of the coal deposits that are being brought to the surface and burned today

Which of the following does the passage mainly discuss

A. Chemical causes of ice ages  

B. Techniques for studying ancient layers of ice in glaciers  

C. Evidence of a relationship between levels of carbon dioxide and global temperature 

Đáp án chính xác

D. Effects of plant life on carbon dioxide levels in the atmosphere  

Trả lời:

verified Giải bởi Vietjack

Đoạn văn chủ yếu thảo luận về cái gì?

Nguyên nhân hóa học của kỷ băng hà

Kĩ thuật sử dụng cho việc nghiên cứu lớp đá cổ trong sông băng

Bằng chứng cho mối quan hệ giữa mức độ carbon dioxide và nhiệt độ toàn cầu

Ảnh hưởng của đời sống thực vật lên mức độ carbon dioxide trong không khí

Đáp án C. Giải thích: Câu chủ đề nằm đầu đoạn văn bản:

Scientists have discovered that for the last 160,000 years, at least, there has been a consistent relationship between the amount of carbon dioxide in the air and the average temperature of the planet. (Các nhà khoa học đã phát hiện ra rằng trong 160.000 năm qua, ít nhất, đã có một mối quan hệ nhất quán giữa lượng carbon dioxide trong không khí và nhiệt độ trung bình của hành tinh.)

Câu trả lời này có hữu ích không?

0

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Câu 3:

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 35 to 42 

      Scientists have discovered that for the last 160,000 years, at least, there has been a consistent relationship between the amount of carbon dioxide in the air and the average temperature of the planet. The importance of carbon dioxide in regulating the Earth's temperature was confirmed by scientists working in eastern Antarctica. Drilling down into a glacier, they extracted a mile-long cylinder of ice from the hole. The glacier had formed as layer upon layer of snow accumulated year after year. Thus, drilling into the ice was tantamount to drilling back through time.  

     The deepest sections of the core are composed of water that fell as snow 160,000 years ago. Scientists in Grenoble, France, fractured portions of the core and measured the composition of ancient air released from bubbles in the ice. Instruments were used to measure the ratio of certain isotopes in the frozen water to get an idea of the prevailing atmospheric temperature at the time when that particular bit of water became locked in the glacier.  

     The result is a remarkable unbroken record of temperature and of atmospheric levels of carbon dioxide. Almost every time the chill of an ice age descended on the planet, carbon dioxide levels dropped. When the global temperature dropped 9°F (5°C), carbon dioxide levels dropped to 190 parts per million or so. Generally, as each ice age ended and the Earth basked in a warm interglacial period, carbon dioxide levels were around 280 parts per million. Through the 160,000 years of that ice record, the level of carbon dioxide in the atmosphere fluctuated between 190 and 280 parts per million, but never rose much higher until the Industrial Revolution beginning in the eighteenth century and continuing today.  

          There is indirect evidence that the link between carbon dioxide levels and global temperature change goes back much further than the glacial record. Carbon dioxide levels may have been much greater than the current concentration during the Carboniferous period, 360 to 285 million years ago. The period was named for a profusion of plant life whose buried remains produced a large fraction of the coal deposits that are being brought to the surface and burned today

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Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

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Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions

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Câu 7:

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 30 to 34 

     As computer use becomes more common, the need for security is more common than ever. One of the greatest security threats in the online world is computer hacking.  

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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 30 to 34 

     As computer use becomes more common, the need for security is more common than ever. One of the greatest security threats in the online world is computer hacking.  

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Câu 10:

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges

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Câu 11:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to choose the word or phrase that best fits each of the numbered blanks from 25 to 29 

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     Prime Minister Phuc said the Fourth Industrial Revolution is “knocking” on every enterprise and bringing profound changes that no country can be an outsider, and (27) ______ Vietnam’s wish to become one of the passengers at the (28) ________ of the Industry 4.0 train, and enthusiastically work with other countries to build a wealthy world.  

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Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined bold word(s) in each of the following questions

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Câu 13:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

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Câu 14:

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

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Câu 15:

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions

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