Đọc hiểu Fiberscopes are one of the most

Bài đọc hiểu  Fiberscopes are one of the most

Read the passage and mark A, B, C or D to indicate the correct answer to each of the questions.

Fiberscopes⁽¹⁾ are one of the most important Outcomes of the science of fiber optics⁽²⁾. Fibers made of glass and transparent⁽³⁾ acrylic plastic are capable of conveying⁽⁴⁾ light energy, and when thousands of these fibers are combined in what is called a fiberscope, they can transmit images. The most common fiberscopes contain about 750,000 fibers, each 0.001 centimeter, or 10 microns, in diameter⁽⁵⁾. For certain uses, the diameter of the fiber may be as small as 5 microns.

Fiberscopes have a wide range of applications. In the medical field, physicians use fiberscopes to examine internal organs and as an aid in delicate surgeries⁽⁶⁾. Miniature probes have also been developed to view muscle fiber, skin tissue, and blood cells. Fiberscopes have also found varied uses in industry, particularly⁽⁷⁾ to inspect or control operations in inaccessible⁽⁸⁾ areas. Bundles of fiberscopes fused together in a solid plate, called a faceplate, are being used in the manufacture⁽⁹⁾ of television picture tubes and other cathode-ray tube devices.

The most far-reaching applications of fiber-optic technology are in communications⁽¹⁰⁾. Optical fibers carry voice messages for telephone service. The sound of the voice is electronically broken down into thousands of pulses per second, which causes a transmitting laser to send coordinated pulses of light through the optical fibers. At the receiving end, the light pulses are converted to electrical signals and the voice message is reconstructed⁽¹¹⁾. Light-wave communication systems can handle an immensely greater number of telephone calls and television programs than the current system, and they will form the basis of the “electronic superhighway” expected to crisscross the nation in the near future of the information age.

Vocabulary

(1) fiberscopes: máy soi sợi

(2) optics: quang học

(3) transparent: trong suốt

(4) conveying: chuyển tải

(5) diameter: đường kính

(6) surgeries: phẫu thuật

(7) particularly: cụ thể

(8) inaccessible: không thể tiếp cận được

(9) manufacture: chế tạo

(10) communications: thông tin liên lạc

(11) reconstructed: tái tạo

Câu hỏi và đáp án đọc hiểu Fiberscopes are one of the most

Question 1. How do optical fibers carry voice messages?

A. By fusing bundles of fiberscopes into a faceplate

B. By converting electrical signals to light pulses

C. By sending coordinated electrical pulses through optical fibers

D. By using cathode-ray tube devices

Đáp án: B. By converting electrical signals to light pulses

Giải thích: The sound of the voice is electronically broken down into thousands of pulses per second

Question 2. Approximately how many fibers does a fiberscope contain?

A. 750,000     

B. 1,000,000     

C. 500,000   

D. 25,000

Đáp án: A. 750,000     

Giải thích: The most common fiberscopes contain about 750,000 fibers

Question 3. The word “inaccessible” in paragraph 2 means                   

A. difficult to find     

B. extremely small      

C. hard to reach     

D. impossible to climb

Đáp án: C. hard to reach   

Giải thích: inaccessible = hard to reach  (không tới được, không chạm vào được)

Question 4. It can be inferred from the passage that fiberscopes                 

A. have more uses in industry than in medicine

B. will play a major role in the information age

C. will decrease in importance as they become more common

D. have reached the peak of their development

Đáp án: B. will play a major role in the information age

Giải thích: they will form the basis of the “electronic superhighway” expected to crisscross the nation in the near future of the information age.

Question 5. The main topic of the passage is                   

A. The birth of the “electronic superhighway”

B. The various applications of fiber-optic technology

C. How fiberscopes have enhanced the Held of medicine

D. How sound may be transformed into light

Đáp án: B. The various applications of fiber-optic technology

Giải thích: bài việt nói về ứng dụng khác nhau của máy nội soi hay công nghệ sợi quang trong lĩnh vực y học, công nghiệp và giao tiếp

Question 6. As used in the last sentence, the word “they” refers to                   

A. fiberscopes      

B. light-wave communication systems

C. television programs      

D. telephone calls

Đáp án: B. light-wave communication systems

Giải thích: Light-wave communication systems can handle an immensely greater number of telephone calls and television programs than the current system, and they will form the basis of the “electronic superhighway” expected to crisscross the nation in the near future of the information age. (Hệ thống thông tin liên lạc bằng sóng ánh sáng có thể xử lý một số lượng lớn các cuộc gọi điện thoại và các chương trình truyền hình hơn so với hệ thống hiện tại, và chúng sẽ tạo thành nền tảng của “siêu xa lộ điện tử” dự kiến ​​sẽ xuyên quốc gia trong tương lai gần của thời đại thông tin.)

Question 7. The word “particularly” in paragraph 2 is closest in meaning to

A. delicately     

B. generally      

C. visually    

D. specifically

Đáp án: D. specifically

Giải thích: particularly = specifically (đặc biệt, cá biệt, riêng biệt)

Question 8. Fiberscopes are being used to do all of the following EXCEPT 

A. assist in delicate surgeries        

B. control operations in inaccessible areas

C. convert light pulses to electrical signals       

D. transmit images

Đáp án: C. convert light pulses to electrical signals       

Giải thích: Trong bài viết, thông tin tín hiệu là phần không được đề cập đến → chọn đáp án C