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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
Just as optical fibers have transformed communication, they are also revolutionizing medicine. These ultra - thin, flexible fibers have opened a window into the living tissues of the body. By inserting optical fibers through natural openings or small incisions and then threading them along the body's established pathways, physicians can look into the lungs, intestines, heart and other areas that were formerly inaccessible to them.
The basic fiber-optics system is called fiberscope, which consists of two bundles of fibers. One, the illuminating bundle, carries light to the tissues. It is coupled to a high-intensity light source. Light enters the cores of the high-purity silicon glass and travels along the fibers. A lens at the end of the bundle collects the light and focuses it into the other bundle, the imaging bundle. Each fiber in the bundle transmits only a tiny fraction of the total image. The reconstructed image can be viewed through an eyepiece or displayed on a television screen. During the last five years, improved methods of fabricating optical fibers have led to a reduction in fiberscope diameter and an increase in the number of fibers, which in turn has increased resolution.
Optical fibers can also be used to deliver laser light. By use of laser beams, physicians can perform surgery inside the body, sometimes eliminating the need for invasive procedures in which healthy tissue must be cut through to reach the site of disease. Many of these procedures do not require anesthesia and can be performed in a physician's office. These techniques have reduced the risk and the cost of medical care.
Câu hỏi:What is the main topic of the passage?
- A. Revolution in communication
- B. The invention of optical fibers
- C. New surgical techniques
- D. The roles of optical fibers in medicine
Lời giải tham khảo:
Đáp án đúng: D
Đáp án D
Phương pháp giải:
Kiến thức: Đọc hiểu – ý chính
Giải chi tiết:
Chủ đề chính của bài đọc là gì?
A. Cuộc cách mạng trong giao tiếp
B. Sự phát minh ra sợi quang
C. Các kỹ thuật phẫu thuật mới
D. Vai trò của sợi quang trong y học
Thông tin:
- Just as optical fibers have transformed communication, they are also revolutionizing medicine.
- By inserting optical fibers through natural openings or small incisions and then threading them along the body's established pathways, physicians can look into the lungs, intestines, heart and other areas that were formerly inaccessible to them.
- Optical fibers can also be used to deliver laser light. By use of laser beams, physicians can perform surgery inside the body, sometimes eliminating the need for invasive procedures in which healthy tissue must be cut through to reach the site of disease.
- These techniques have reduced the risk and the cost of medical care.
Tạm dịch:
- Giống như sợi quang học đã thay đổi liên lạc, chúng cũng đang cách mạng hóa y học.
- Bằng cách chèn các sợi quang học qua các khe hở tự nhiên hoặc các vết rạch nhỏ và sau đó luồn chúng dọc theo các đường dẫn đã được thiết lập của cơ thể, các bác sĩ có thể nhìn vào phổi, ruột, tim và các khu vực khác mà trước đây chúng không thể tiếp cận được.
- Sợi quang học cũng có thể được sử dụng để cung cấp ánh sáng laser. Bằng cách sử dụng chùm tia laze, bác sĩ có thể tiến hành phẫu thuật bên trong cơ thể, đôi khi loại bỏ sự cần thiết của các thủ thuật xâm lấn, trong đó mô khỏe mạnh phải được cắt qua để tiếp cận vị trí bệnh.
- Những kỹ thuật này đã làm giảm rủi ro và chi phí chăm sóc y tế.
Câu hỏi này thuộc đề thi trắc nghiệm dưới đây, bấm vào Bắt đầu thi để làm toàn bài
Hướng dẫn Trắc nghiệm Online và Tích lũy điểm thưởng
CÂU HỎI KHÁC
- Indicate the word that differs from the other three in the position of primary stress: interact, understand, volunteer, contribute
- Indicate the word that differs from the other three in the position of primary stress: maintain, perform, prefer, offer
- Indicate the word whose underlined part differs from the other three in pronunciation: looked, climbed, cleaned, enjoyed
- Indicate the word whose underlined part differs from the other three in pronunciation: lake, play, shape, many
- At first, John said he hadn’t broken the vase, but later he accepted it
- An indecisive commander is unlikely to win the confidence of his men
- My kids only have a faint memory of our hometown as they have lived away from it for a long time
- When I suggested he was mistaken, John got hot under the collar and stormed out of the room
- The teacher demanded that the classroom _____ cleaned immediately.
- As soon as I _____, I’m going to return to my hometown.
- The captain is the last person ______ the sinking ship.
- I hope the new year will bring you _____, health and prosperity
- If you work hard, you _____ pass the exam
- When Tom _____ yesterday, I _____ the washing up in the kitchen.
- She always said that when she grew up, she wanted to be _____ doctor.
- _____ the sky was grey and cloudy, we went to the beach.
- _____ is not clear to researchers.
- He tried to ______ himself with everyone by paying then compliments
- I think there’s a picture of the hotel _____ the first page
- The smell was so bad that it completely _____ us off our food
- I won’t buy that car because it has too much _____ on it.
- I had a red _____ day yesterday.
- You ___ have eaten the mushrooms if you were not sure.
- Jenny and Kathy are arranging to see a new film.- Jenny: Why don’t you come over and see the new film with me?”- Kathy: ________”
- Helen and Sarah are talking about their school’s field trip.- Helen: This is the best field trip we’ve ever had”.- Sarah: ________.
- Our position in the family is one of the factors (26)_________ strongly affect our personality
- The eldest or first-born children get maximum (27) _________ from their parents and the result is that they are usually self-confident and ambitious people.
- (28) _________, they can be quite bossy and dominant as they often give orders and are fearful of losing position.
- Yet, on the negative side, (29) _________ children can be jealous and moody ones.
- Yet, they are charming and (30) _________, have a good sense of humor and know how to manipulate others when they want to get their way.
- What is the best title for this passage?v
- The word ones” in the passage refers to __________.
- It can be inferred from the passage that the Age of Reptiles lasted about _______.
- The word chilly” in the passage refers to _________.
- According to the passage, what is TRUE about the size of dinosaurs?
- What is the main topic of the passage?v
- The author uses the expression 'have opened a window' to indicate that the use of optical fibers_____.
- Which of the following is closest in meaning to the word formerly”?
- The word 'them' in paragraph 1 refers to ____. v
- According to the passage, what is the purpose of the illuminating bundle in a fiberscope?
- According to the passage, how do the fiberscopes used today differ from those used in five years ago?
- Which of the following is NOT mentioned by the author as one of the advantages of laser surgery techniques?
- The girl who were injured in the accident is now in hospital
- The farmer plows the fields, plants the seeds and will harvest the crop
- In order to do a profit, the new leisure centre needs at least 2000 visitors a month
- I am not as good at English as my friend
- I am going away tomorrow, mom.”, the son said
- Sally paid for her travel in advance, but it wasn’t necessary
- Jenifer rejected the job offer. She now regrets it
- The master of ceremonies has a very soft voice. Everyone listens to her attentively whenever
