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19 tháng 9 2017

KEY C

Giải thích: chủ ngữ là each + N thì động từ chia số ít

Dịch: Mỗi sợi cơ trong bó cơ vận chuyển duy nhất 1 phần nhỏ xíu của toàn bộ hình ảnh.

4 tháng 3 2019

Đáp án: C

Giải thích: chủ ngữ là each + N thì động từ chia số ít

Dịch: Mỗi sợi cơ trong bó cơ vận chuyển duy nhất 1 phần nhỏ xíu của toàn bộ hình ảnh

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 38 to 42. (1) 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 threading them along the body's established pathways, physicians can look into...
Đọc tiếp

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 38 to 42.

(1) 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 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.

(2) The basic fiber-optics system is called fiberscope, which consists of two bundles of fibers. One, the illuminating bundle, carries light to the tissues. Is 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.

(3) 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?

A. A revolution in communication.  

B. The invention of optical fibers.

C. New surgical techniques.    

D. The roles of optical fibers in medicine.

1
21 tháng 11 2018

Đáp án D

A. Sự phát triển trong ngành truyền thông

B. Sự phát minh ra cáp quang

C. Công nghệ phẫu thuật mới

D. Vai trò của sợi quang trong y học
Câu đầu tiên đã nói lên chủ đề của toàn bài: “Just as optical fibers have transformed communication, they are also revolutionizing medicine.” (Chúng cải tiến y học). Những câu tiếp theo giải thích rõ vai trò của chúng: “…have open a window into the living tissiues of the body”, “By inserting optical fibers…, physicians can look into the lungs, intestines, heart and other areas”, “used to deliver laser light”, “These techniques have reduced the risk and the cost of medical care.” …=> Đáp án D.

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 38 to 42. (1) 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 threading them along the body's established pathways, physicians can look into...
Đọc tiếp

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 38 to 42.

(1) 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 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.

(2) The basic fiber-optics system is called fiberscope, which consists of two bundles of fibers. One, the illuminating bundle, carries light to the tissues. Is 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.

(3) 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. 

According to the passage, what is the purpose of the illuminating bundle in a fiberscope?

A. To carry light into the body           

B. To collect and focus light

C. To reconstruct images                   

D. To perform surgery inside the body

1
28 tháng 12 2018

Đáp án A

Giải thích: Theo bài văn, chức năng của bó chiếu sáng trong kính quang thể là gì?

A. Mang ánh sáng vào trong cơ thể

B. Tập hợp và tập hội tụ ánh sáng

C. Dựng lại hình ảnh

D. Thực hiện phẫu thuật bên trong cơ thể
Dòng thứ hai, đoạn hai: “One, the illuminating bundle, carries light to the tissues”

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 38 to 42. (1) 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 threading them along the body's established pathways, physicians can look into...
Đọc tiếp

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 38 to 42.

(1) 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 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.

(2) The basic fiber-optics system is called fiberscope, which consists of two bundles of fibers. One, the illuminating bundle, carries light to the tissues. Is 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.

(3) 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. 

Which of the following is closest in meaning to the word “cores” in paragraph 2?

A. tips        

B. centers    

C. clusters   

D. lines

1
9 tháng 6 2018

Đáp án B

Core (n) = center (n): trung tâm, phần lõi, nòng cốt, hạt nhân

A: Tip (n): chóp, tiền boa

C: Cluster (n): đám, bụi
D: Line (n): dòng, đường kẻ

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 38 to 42. (1) 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 threading them along the body's established pathways, physicians can look into...
Đọc tiếp

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 38 to 42.

(1) 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 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.

(2) The basic fiber-optics system is called fiberscope, which consists of two bundles of fibers. One, the illuminating bundle, carries light to the tissues. Is 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.

(3) 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. 

Which of the following is closest in meaning to the word “formerly” in paragraph 1?

A. previously       

B. completely        

C. usually    

D. theoretically

1
3 tháng 2 2018

Đáp án A

formerly”: (adv) = previously: (adv) trước đây, thủa xưa, ngày trước

B. Completely (adv): hoàn toàn

C: Usually (adverb of frequency): thường thường, thông thường
D: Theoretically (adv): về mặt lý thuyết, theo lý thuyết

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 38 to 42. (1) 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 threading them along the body's established pathways, physicians can look into...
Đọc tiếp

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 38 to 42.

(1) 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 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.

(2) The basic fiber-optics system is called fiberscope, which consists of two bundles of fibers. One, the illuminating bundle, carries light to the tissues. Is 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.

(3) 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. 

According to the passage, how do the fiberscopes used today differ from those used in five years ago?

A. They use brighter light.       

B. They are longer.

C. They contain more fibers.   

D. They are larger in diameter.

1
4 tháng 4 2019

Đáp án C

Giải thích: Theo bài văn, làm thế nào sợi quang ngày nay khác với 5 năm trước như thế nào?

A. Chúng sử dụng ánh sáng mạnh hơn

B. Chúng dài hơn

C. Chúng chứa nhiều sợi hơn

D. Chúng có đường kính to hơn

Khổ thứ hai, câu cuối: “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” (Trong vòng 5 năm qua công nghệ được cải tiến dẫn đến việc giảm kích thước đường kính và tăng số lượng của các ống dây)

6 tháng 3 2021

A vacuum will neither conduct heat nor ...

A. transmit sound waves  B. transmitting sound waves  

C. sound waves are transmitted  D. the transmission of sound waves

 
24 tháng 6 2019

Đáp án C

Từ đồng nghĩa – kiến thức về từ vựng và cụm động từ

Tạm dịch: Vào những năm 1960, Tổ chức y tế thế giới (WHO) đã bắt đầu một chiến dịch để tiệt trừ những loại muỗi truyền phát căn bệnh sốt rét.

=>Get rid of (phr.v): tiệt trừ, loại bỏ, xóa bỏ Xét các đáp án:

A.minimize /ˈmɪnəmaɪz/ (v): tối ưu hóa, tối thiểu hóa

B.develop /dɪˈveləp/ (v): phát triển thêm, làm gia tăng

C.eradicate /ɪˈrædɪkeɪt/ (v): xóa bỏ, tiệt trừ hoàn toàn

D.appreciate /əˈpriːʃieɪt/ (v): đánh giá cao, coi trọng điều gì/ai

=> Get rid of ~ Eradicate

Choose the best answer among A, B, C or D to complete each sentence. (10 pts) 1. The animal _________ in the forest fire was a wild pig. A. hurt B. hurted C. hurting D. hurts 2. The phrase “window shopping” means: _________. A. buying a window B. just looking without intending to buy C. going shopping through the window D. buying so many things at the same time 3. The sky is _________ here in the countryside because there are no buildings to block the view. A. tidy B. close C. dense...
Đọc tiếp

Choose the best answer among A, B, C or D to complete each sentence. (10 pts)

1. The animal _________ in the forest fire was a wild pig.

A. hurt B. hurted C. hurting D. hurts

2. The phrase “window shopping” means: _________.

A. buying a window B. just looking without intending to buy

C. going shopping through the window D. buying so many things at the same time

3. The sky is _________ here in the countryside because there are no buildings to block the view.

A. tidy B. close C. dense D. vast

4. _________ is a large piece of furniture where you can hang your clothes.

A. Desk B. Wardrobe C. Counter D. Refrigerator

5. An old woman was _________ the goats up the mountainside.

A. riding B. taking C. herding D. running

6. To Bell’s experiment, speech (transmit) ________________ from place to one another.

A. transmitted B. was transmitted C. transmits D. will transmit

7. On his way home from office yesterday, Tommy ____________ an acquaintance since university time.

A. came across B. came over C. came along D. came up with

8. “That’s so kind of you to invite us to your birthday party.” – “_____________”

A. Oh, No way. C. The pleasure is mine.

B. That’s good, thanks D. OK. That’s great.

9. A number of young people _____________ too much time using Facebook nowadays.

A. tend to waste B. tend to wasting C. tends to waste D. tends to wasting

10. I think it’s __________ to put all our eggs into one bastket.

A. adviceless B. unadvisable C. imadvisable D. inadvisable

Giúp giúp giupsx10~!!!

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