Câu hỏi:
21/04/2022 451
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.
What is the main topic of the passage?
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.
What is the main topic of the passage?
Đáp án chính xác
Câu hỏi trong đề:
Đề thi thử môn Tiếng anh THPT Quốc gia năm 2022 có lời giải (20 đề) !!
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
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Trả lời:
Giải bởi Vietjack
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.
Nhà sách VIETJACK:
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