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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 that follow.   Under certain circumstances, the human body must cope with gases at greater-than-normal atmospheric pressure. For example, gas pressures increase rapidly during a drive made with scuba gear because the breathing equipment allows divers to stay underwater longer and dive deeper. The pressure exerted on the human body increases by 1 atmosphere for...
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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 that follow.

  Under certain circumstances, the human body must cope with gases at greater-than-normal atmospheric pressure. For example, gas pressures increase rapidly during a drive made with scuba gear because the breathing equipment allows divers to stay underwater longer and dive deeper. The pressure exerted on the human body increases by 1 atmosphere for every 10 meters of depth in seawater, so that at 39 meters in seawater a diver is exposed to pressure of about 4 atmospheres. The pressure of the gases being breathed must equal the external pressure applied to the body, otherwise breathing is very difficult. Therefore all of the gases in the air breathed by a scuba diver at 40 meter are present at five times their usual pressure. Nitrogen, which composes 80 percent of the air we breathe, usually causes a balmy feeling of well-being at this pressure. At a depth of 5 atmospheres, nitrogen causes symptoms resembling alcohol intoxication, known as nitrogen narcosis. Nitrogen narcosis apparently results from a direct effect on the brain of the large amounts of nitrogen dissolved in the blood. Deep dives are less dangerous if helium is substituted for nitrogen, because under these pressures helium does not exert a similar narcotic effect.

  As a scuba diver descends, the pressure of nitrogen on the lungs increases. Nitrogen then diffuses from the lungs to the blood, and from the blood to body tissues. Nitrogen then diffuses from the lungs to the blood, and from the blood to body tissues The reverse occurs when the diver surfaces, the nitrogen pressure in the lungs falls and the nitrogen diffuses from the tissues into the blood, and from the blood into the lungs. If the return to the surface is too rapid, nitrogen in the tissues and blood cannot diffuse out rapidly enough and nitrogen bubbles are formed. They can cause severe pains, particularly around the joints.

  Another complication may result if the breath is held during ascent. During ascent from a depth of 10 meters, the volume of air in the lungs will double because the air pressure at the surface is only half of what it was at 10 meters. This change in volume may cause the lungs to distend and even rupture. This condition is called air embolism.

  To avoid this event, a diver must ascend slowly, never at a rate exceeding the rise of the exhaled air bubbles, and must exhale during ascent.

The word “rupture in bold in paragraph 3 is closest in meaning to _________.

A. shrink

B. burst 

C. hurt

D. stop

1
12 tháng 6 2017

Chọn B  

Từ “rupture” in đậm trong đoạn 3 đồng nghĩa với____

A. Co vào

B. Vỡ

C. Tổn thương

B. dừng

Dịch bài:

Trong một số trường hợp nhất định, cơ thể con người phải đối phó với các khí ở áp suất khí quyển lớn hơn bình thường. Chẳng hạn, áp suất khí tăng lên nhanh chóng trong khi lặn bằng thiết bị lặn bởi vì thiết bị thở cho phép thợ lặn ở dưới nước lâu hơn và lặn sâu hơn. Áp lực tác động lên cơ thể con người tăng lên 1 atmôtfe cho mỗi 10 mét chiều sâu trong nước biển, do đó ở 39 mét trong nước biển thợ lặn phải chịu áp lực khoảng 4 atmôtfe. Do đó tất cả các khí trong không khí hít thở của một thợ lặn bình thường ở độ cao 40 mét phải ở mức gấp năm lần áp suất thông thường của chúng. Nitơ, chiếm 80% không khí chúng ta hít vào, thường tạo ra cảm giác thoải mái khi chịu áp lực này. Ở độ sâu 5 ô, nitơ gây ra các triệu chứng giống như say rượu, được gọi là nhiễm độc nitơ. Nôn mửa nitơ dường như là kết quả từ một ảnh hưởng trực tiếp đến bộ não của một lượng lớn nitơ hòa tan trong máu. Những thợ lặn sâu thường ít nguy hiểm hơn nếu khi Heli được thay thế cho khí Nitơ, bởi vì dưới áp lực, khí heli không gây ra tác dụng gây mê tương tự.

Khi một thợ lặn lặn xuống, áp lực của nitơ lên phổi tăng lên. Nitơ sau đó phân tán từ phổi sang máu, và từ máu đến các mô cơ thể. Quá trình ngược lại xảy ra khi các thợ lặn trở lên mặt nước, áp suất nitơ trong phổi hạ xuống và nitơ khuếch tán từ mô vào máu, và từ máu vào phổi . Nếu như quay trở lại mặt nước quá nhanh, khí ni tơ trong các mô và máu không thể khuếch tán ra ngoài đủ nhanh chóng và bóng khí ni tơ sẽ hình thành. Nếu như quay trở lại mặt nước quá nhanh, khí ni tơ trong các mô và máu không thể khuếch tan ra ngoài đủ nhanh chóng và bóng khí ni tơ sẽ hình thành. Chúng sẽ gây ra những cơn đau khủng khiếp, đặc biệt là xung quanh các khớp xương.

Một biến chứng khác có thể xảy ra nếu hơi thở được giữ trong quá trình trở lên mặt nước. Trong quá trình nồi lên từ độ sâu 10 mét, lượng không khí trong phổi sẽ tăng lên gấp đôi vì áp lực khí tại bề mặt nước chỉ còn 1 nửa so với ở độ sâu 10 mét. Sự thay đổi về lượng khí có thể làm phổi sưng phồng, thậm chí là vỡ nát. Hiện tượng này gọi là thuyên tắc hơi.

Để tránh sự hiện tượng này, một thợ lặn phải đi nổi lên thật chậm, không bao giờ ở tốc độ vượt quá sự nổi lên của bong bóng khí thở ra, và phải thở ra khi lên.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 34 to 38. The human body is a symphony of intricate rhythms, orchestrated (34) _____ an invisible conductor known as the body clock. It is the mastermind behind our sleep-wake (35) _____, regulating our internal processes with unwavering precision. Like a skilled maestro, it synchronises our biological functions, guiding us...
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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 word or phrase that best fits each of the numbered blanks from 34 to 38.

The human body is a symphony of intricate rhythms, orchestrated (34) _____ an invisible conductor known as the body clock. It is the mastermind behind our sleep-wake (35) _____, regulating our internal processes with unwavering precision. Like a skilled maestro, it synchronises our biological functions, guiding us through the ebb and flow of each day.

This internal timekeeper, also (36) _____ as the circadian rhythm, governs our sleep patterns, hormone production, and metabolism. It dances to the beat of external cues, such as sunlight and darkness, aligning our bodies with the (37) _____ rhythms of the world around us. But this remarkable clock isn't just a mechanical timepiece. It has the power to shape our physical and mental well-being. When in harmony, it bestows us with vitality, alertness, and a sense of balance. However, (38) _____ disrupted, it can unleash chaos, leading to sleep disorders, mood swings, and even compromised immune function.

34. A. with B. by C. on D. for

35. A. circle B. recycle C. cycle D. archive

36. A. nominated B. famous C. famed D. known

37. A. superficial B. natural C. dominant D. obvious

38. A. until B. because C. since D. when

1
12 tháng 12 2023

34 B

35 C

36 D

37 B

38 D

27 tháng 3 2019

Đáp án D

- Resilience: (n) khả năng phục hồi nhanh sau 1 điều gì đó xấu, sức bật

- Resistance: (n) sự kháng cự, đề kháng (+ to st/ sb)

- Sensitivity (n): tính nhạy cảm

- Sensibilitly (n): cảm giác

Tạm dịch: Khả năng phục hồi của cơ thể con người trước các yếu tố và bệnh tật là 1 trong những điều kì diệu ở mọi thời điểm

26 tháng 9 2019

Đáp án: D

Giải thích: Mấu chốt của câu này là các em phải đọc hết đoạn cuối để suy ra cái mà tác giả muốn hướng tới: Con người phải đối mặt với sự lựa chọn khó khăn: sự sống của mình hay cứu lấy động vật.

19 tháng 4 2017

Đáp án B.

Key words: main idea of the passage.

Trong đoạn 1, 2 tác giả nêu ra rằng âm nhạc Mĩ khởi nguồn từ những người Mĩ gốc Phi; nhưng không ai bận tâm ghi chép về những người đã mang âm nhạc từ quê hương họ tới Mĩ.

Đoạn cuối nói rằng người ta thật khó biết tên của những người đã khơi nguồn cho truyền thống âm nhạc này ở Mĩ. Do đó, đáp án đúng phải là B. it is hard to exactly recognize the people who started the American musical tradition: Thật khó để xác định chính xác những người khởi đầu cho truyền thống âm nhạc ở Mĩ.

17 tháng 12 2017

Đáp án B.

Key words: main idea of the passage.

Trong đoạn 1, 2 tác giả nêu ra rằng âm nhạc Mĩ khởi nguồn từ những người Mĩ gốc Phi; nhưng không ai bận tâm ghi chép về những người đã mang âm nhạc từ quê hương họ tới Mĩ.

Đoạn cuối nói rằng người ta thật khó biết tên của những người đã khơi nguồn cho truyền thống âm nhạc này ở Mĩ. Do đó, đáp án đúng phải là B. it is hard to exactly recognize the people who started the American musical tradition: Thật khó để xác định chính xác những người khởi đầu cho truyền thống âm nhạc ở Mĩ.

31 tháng 8 2018

Đáp án B.

Key words: main idea of the passage.

Trong đoạn 1, 2 tác giả nêu ra rằng âm nhạc Mĩ khởi nguồn từ những người Mĩ gốc Phi; nhưng không ai bận tâm ghi chép về những người đã mang âm nhạc từ quê hương họ tới Mĩ.

Đoạn cuối nói rằng người ta thật khó biết tên của những người đã khơi nguồn cho truyền thống âm nhạc này ở Mĩ. Do đó, đáp án đúng phải là B. it is hard to exactly recognize the people who started the American musical tradition: Thật khó để xác định chính xác những người khởi đầu cho truyền thống âm nhạc ở Mĩ.

7 tháng 4 2018

Đáp án: C

Giải thích: Chúng ta thấy câu C sai luôn khi đọc đến dòng 4, dòng 5 của đoạn 2.

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   22  to  26A.   Read the passage carefully, then choose the correct answer.The ruined temples of Angkor are perhaps one of the mast impressive Seven Wonders of the World. Located in modern day Cambodia near Lake TonIe Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire from the ninth to the...
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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   22  to  26

A.   Read the passage carefully, then choose the correct answer.

The ruined temples of Angkor are perhaps one of the mast impressive Seven Wonders of the World. Located in modern day Cambodia near Lake TonIe Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire from the ninth to the fifteenth century. The ruins of Angkor are documented as same .of the mast impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.

One possible explanation far the downfall of the Khmer Empire has to do with the inhabitants' irrigation system. The temple and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding rice patties and farmland during the course of the year. Farmers were completely dependent upon the water for their crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.

Scientists speculate that toward the end of the Khmer Empire the hydraulic systems of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of the Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food quicker and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and the loss of water led to decrease in the food supply. With less food available, the people of Angkor slowly began to migrate to other parts of Cambodia thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

22. What is the passage mainly about?

A. Modern day agricultural procedures in Cambodia.

B. A possible explanation for the, decline of a civilization.

C. The essential role water plays in farming.

D. Religious temples of the ancient Khmer Empire.

23. The passage preceding the passage most likely discusses ______.

A. architecture of ancient Asian civilization

B. religious practices of the people of Angkor

C. the form of government practiced by the Khmer Empire

D. the other six wonders of the world

24. According to the passage, Lake Tonle Sap in Cambodia ______.

A. is an enormous fresh body of water in Asia

B. was unable to supply enough fish for the people of Angkor

C. became polluted due to a population explosion

D. is one of the Seven Wonders of the World

25. Why does the author mention the hydraulic systems of the reservoirs?

A. They supplied irrigation from the Indian Ocean.

B. They became non-functional due to overuse.

C. They were destroyed by nearby warrior tribes.

D. They helped transport the sandstones for constructing temples.

26. It can be inferred from the passage that the inhabitants of the Khmer Empire ______.

A. were intentionally starved by the farmers

B. lost their food source due to excess rainfall

C. supplemented their diets with 'meat hunted in the nearby jungles

D. depended upon rice as their main source of food

27. All the following are mentioned as events that can affect food supply EXCEPT.

A. erosion of soil                                       B. contamination of soil

C. reduction of nutrients                            D. loss of water supply

 

2
16 tháng 4 2022

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   22  to  26

A.   Read the passage carefully, then choose the correct answer.

The ruined temples of Angkor are perhaps one of the mast impressive Seven Wonders of the World. Located in modern day Cambodia near Lake TonIe Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire from the ninth to the fifteenth century. The ruins of Angkor are documented as same .of the mast impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.

One possible explanation far the downfall of the Khmer Empire has to do with the inhabitants' irrigation system. The temple and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding rice patties and farmland during the course of the year. Farmers were completely dependent upon the water for their crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.

Scientists speculate that toward the end of the Khmer Empire the hydraulic systems of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of the Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food quicker and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and the loss of water led to decrease in the food supply. With less food available, the people of Angkor slowly began to migrate to other parts of Cambodia thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

22. What is the passage mainly about?

A. Modern day agricultural procedures in Cambodia.

B. A possible explanation for the, decline of a civilization.

C. The essential role water plays in farming.

D. Religious temples of the ancient Khmer Empire.

23. The passage preceding the passage most likely discusses ______.

A. architecture of ancient Asian civilization

B. religious practices of the people of Angkor

C. the form of government practiced by the Khmer Empire

D. the other six wonders of the world

24. According to the passage, Lake Tonle Sap in Cambodia ______.

A. is an enormous fresh body of water in Asia

B. was unable to supply enough fish for the people of Angkor

C. became polluted due to a population explosion

D. is one of the Seven Wonders of the World

25. Why does the author mention the hydraulic systems of the reservoirs?

A. They supplied irrigation from the Indian Ocean.

B. They became non-functional due to overuse.

C. They were destroyed by nearby warrior tribes.

D. They helped transport the sandstones for constructing temples.

26. It can be inferred from the passage that the inhabitants of the Khmer Empire ______.

A. were intentionally starved by the farmers

B. lost their food source due to excess rainfall

C. supplemented their diets with 'meat hunted in the nearby jungles

D. depended upon rice as their main source of food

27. All the following are mentioned as events that can affect food supply EXCEPT.

A. erosion of soil                                       B. contamination of soil

C. reduction of nutrients                            D. loss of water supply

16 tháng 4 2022

22-b 23-d 24-a 25-b 26-d 27-b

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer for each of the questions.          Think about your daily life. Do you follow the same road to work every day? Do you sit in the same place in the class? When you get dressed, do you always put the same leg or arm in first? You probably do, because we all have routines in our lives.          Routines save time and energy because you do them without thinking, that’s why they are so...
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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 for each of the questions.

          Think about your daily life. Do you follow the same road to work every day? Do you sit in the same place in the class? When you get dressed, do you always put the same leg or arm in first? You probably do, because we all have routines in our lives.

          Routines save time and energy because you do them without thinking, that’s why they are so important in the morning when your brain isn’t active. Here’s Jo talking about her morning routine.

  “Oh yes, I always do exactly the same things. I wake up at seven o’clock every morning, but I don’t get up till quarter past seven. I switch on the radio and listen to the news. Then I go to the loo and I brush my teeth. I have a shower and dry my hair. Then I choose my clothes and I get dressed, I don’t eat anything for breakfast. I just have a cup of coffee. Then I go to work. Yes, it’s always the same.”

          Routines are very useful, but they also make you uncreative. So sometimes it’s a good idea to break your routines. Get out of bed on the opposite side. Listen to a different radio station. Take a different route to work. Eat something different for breakfast. Change your routine. You never know, it could change your life.

Question 38. This passage is mainly concerned with ___________.

      A. our usual ways of doing things                                       B. our daily activities

      C. Jo’s timetable                                                               D.  changes  in our lives

Question 39. According to the passage, routines are useful because ___________.

      A. we can do them in the morning                                      B. they make a habit of never thinking

      C. they save time and energy                                             D.  we all have them in our lives

Question 40. The word “loo” can best be replaced with _____________________.

      A. balcony                                  B. bedroom                   C. sink                   D.  toilet

Question 41. What is the main disadvantage of routines?

      A. Routines may change our life.

      B. Routines make us unable to create things or to have new ideas.

      C. Routines make a habit of never thinking before doing.

      D.  Routines make us do the same things day after day.

Question 42. Which of the sentences is true?

      A. Routines make our brain creative.                                  

      B. People who have routines are unable to think.

      C. We shouldn’t break our routines.    

      D.  Our lives could be changed if we change our routines.

 

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

Question 43. He plays sometimes (A) badminton or joins (B) a group of (C)workers to relax (D).

Question 44. Some parents believe (A) that most of the (B) homework are (C) useless (D).

Question 45. A little (A) minutes later, the (B) pilot announced that everything was (C) all (D) right.

1
23 tháng 9 2021

Question 38. This passage is mainly concerned with ___________.

      A. our usual ways of doing things                                       B. our daily activities

      C. Jo’s timetable                                                               D.  changes  in our lives

Question 39. According to the passage, routines are useful because ___________.

      A. we can do them in the morning                                      B. they make a habit of never thinking

      C. they save time and energy                                             D.  we all have them in our lives

Question 40. The word “loo” can best be replaced with _____________________.

      A. balcony                                  B. bedroom                   C. sink                   D.  toilet

Question 41. What is the main disadvantage of routines?

      A. Routines may change our life.

      B. Routines make us unable to create things or to have new ideas.

      C. Routines make a habit of never thinking before doing.

      D.  Routines make us do the same things day after day.

Question 42. Which of the sentences is true?

      A. Routines make our brain creative.                                  

      B. People who have routines are unable to think.

      C. We shouldn’t break our routines.    

      D.  Our lives could be changed if we change our routines.

 

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

Question 43. He plays sometimes (A)=>sometimes plays badminton or joins (B) a group of (C)workers to relax (D).

Question 44. Some parents believe (A) that most of the (B) homework are (C)=>is useless (D).

Question 45. A little (A)=>few minutes later, the (B) pilot announced that everything was (C) all (D) right.

10 tháng 9 2018

Đáp án: A

Giải thích: Ở cuối câu 1 đoạn 2, tác giả có nhắc đến việc cách dùng chuẩn được chấp nhận bởi số đông mọi người ở bất kì hoàn cảnh nào, không cần tính đến mức độ trang trọng.