13. Clothing made of plastic fibers has certain advantages over ____ made of natural fibers like cotton, wool, or silk.

A. that                          B. the one                    C. what                        D. which

14. The government would be forced to use its emergency powers ____ further rioting to occur.

A. should                     B. did                           C. were                        D. had

15. _____we have finished the course, we shall start doing more revision work.

A. For now                  B. Now that                 C. Ever since               D. By now

16. Go on. Tell me the gossips. I'm all ____.

A. full                          B. head                        C. eyes                         D. ears

17. If only motorists ____ drive more carefully.     A. might               B. shall                        C. would          D. should

18. He lost control of his temper and ____ his anger.

A. lost sight of             B. took note of            C. made room for        D. gave way to

19. Mr. Nixon refused to answer the questions on the ____ that the matter was confidential.

A. reason                     B. excuses                   C. grounds                   D. foundations

20. ____ at his lessons, he couldn't catch up with his classmates.

A. Hardly as he worked           B. Hard as he worked              C. Hard as he does       D. Hard as he was

21. ____ is more interested in rhythm than in melody is apparent from his compositions.

A. That Philip Glass     B. Philip Glass, who    C. Philip Glass D. Because Philip Glass

22. ____ invisible to the unaided eye, ultraviolet light can be detected in a number of ways.

A. Although is             B. Despite                    C. Even though it         D. Although

23. In fact, the criminals ____ in because the front door was wide open and they just walked in.

A. needn't have broken                                    B. shouldn't have break

C. didn't need to break                         D. couldn't have broken

24. Nam: In my opinion, computer is one of the most wonderful inventions.Lan: ____.

A. There is no doubt about it.              B. Yes. Congratulations!

C. You shouldn't have said that                       D. Pardon?

25. Nga: Would you mind if I closed the door? It's too cold outside.Lan: ____.

A. I'd rather you didn't. It's stuffy.       B. No, I don't like.       C. No, never mind.      D. Why not do it?

In this section you will find after the passage a number of questions about the passage. You must choose the one which you think fits best . Write your answers in the spaces below (1.0pt)

Paper is named for papyrus, a reed like plant used by ancient Egyptians as writing material more than 5000 years ago. The Chinese invented the paper that we use 2000 years ago.

A piece of paper is really made up of tiny fibers, unlike a piece of material. The fibers used in paper, however, are plant fibers, and there are millions of them in one sheet. In addition to the plant fiber, dyes and additives such as resin may be used. Dyes can make the paper different colors; resin may add weight and texture.

Where do these fibers come from ? The majority of paper is made from the plant fiber that comes from trees. Millions are cut down, but new trees are planted in their place. Paper may be also made from things like old rags or pieces of cloth. Wastepaper, paper that has been made and used, can be turned into recycled paper. This recycling process saves forest, energy and reduces air and water pollution.

1. According to the passage, the paper that we use was first invented by

A. the Chinese B. the Egyptians C. ancient cultures D. foresters

2. What is the main ingredient in most paper ?

A. resin B. cardboard C. plant fiber D. papyrus

3. According to the passage, the primary source of the plant fiber used in paper is

A. rags B. trees C. fabric D. wastepaper

4. According to the passage, recycling paper is

A. bad for the environment C. good for the environment

B. wasteful D. economical

5. According to the passage, recycling paper does all of the following EXCEPT

A. reduce the need for ink C. save energy

B. save forests D. reduce air pollution

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.

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

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

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

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.