Tuyển tập 100 đề thi thử đại học môn Tiếng Anh (Có đáp án)

Choose the word whose underlined part is pronounced differently from that of the others:
1: A. adventure	 	B. future	C. mature	D. figure
2: A. young 	B. plough 	C. couple 	D. cousin
Choose the word whose stress position is different from that of the others:
3: A. open	B. happen	C. offer	D. begin
4: A. difficulty 	B. simplicity 	C. discovery 	D. commodity 
5: A. obligatory	B. geographical	C. international	D. undergraduate
Choose the best answer among A, B, C, D to complete each sentence below:
6: _________ he is old, he wants to travel around the world.
 A. In spite of	B. Although	C. Despite	D. Because
7: Had I studied harder, I_________________better in the last exam.
 A. would do	B. would have done	C. had done	D. wouldn’t have done
8: The larger the apartment, the __________________ the rent is.
	A. expensive	B. more expensive	C. expensively	 D. most expensive
9: Nam wanted to know what time _______.
 A. the movie began	B. the movie begins C. does the movie begin D. did the movie begin 
10: On attaining maximum size, ______ by drawing itself out and dividing into two daughter amoebas, each receiving identical nuclear materials.
 A. the reproduction of the amoeba 	B. the amoeba, which reproduces
 C. reproducing the amoeba	D. the amoeba reproduces
11; Last week, our class went to Ha Long Bay for a picnic, ________ made us very happy then.
A. which	B. that	C. it	D. of which
12: Lenses, ____________, are used to correct imperfections in eyesight.
 A. are the forms of glasses and contact lenses	B. in the form of glasses and contact lenses
 C. glasses and contact lenses which form	D. glasses and contact lenses may be formed
13:Tim: “____________” – Jeycy: “Certainly”
 A. Welcome back! 	B. What are you doing there? 
C. I’m sorry I am late 	D. May I borrow a pencil , please?
14: Jane:“Would you mind if I use you computer for an hour?” 	Tony:”________”
A. Not at all. I’ve finished my job 	B. Yes, you can use it.
 	C. Of course not. I still need it now 	D. Yes, It’s all right.
15: Thanks to the laser beams, at last, he could get rid of the __________birthmark on his face.
 A. normal	B. abnormal	C. abnormality 	D. abnormally
16: That beautiful girl died of an________ morphine.
 A. overweight 	B. overhear	C. overdo	D. overdose
17: He is the postman _____ I got this letter.
A. from who	B. to whom	C. from whom	D. with whom
18: We usually do go by train, even though the car _________ is a lot quicker.
A. travel 	B. journey	C. trip 	D. voyage
19: I suggest the room ..before Christmas.
A. be decorated	 B. is decorated	C. were decorated	D. should decorate
20: Many species of plants and animals are in___________ of extinction.
 A. dangerous	B. endangered	C. danger	D. dangerously
21: The last person ______ the room must turn off the lights.
 A. to leave	B. who leave	C. that	leave	D. all are correct
22:	“What’s the matter? You don’t look very well.” – “I feel a little _________________.”
A. out of the blue 	C. out of order 	B. under the weather 	D. under the impression
23: I know we had an arguement, but now I'd quite like to _________.
	A. look down 	B. make up 	C. fall out	D. bring up
24: Nowadays women ___the same wages as men
 A.should pay	B.will be paid	C.will pay	D.should be paid
Mark the letter A,B,C or D on your sheet to indicate the word(s) SIMILAR in meaning to the underlined words in each of the following sentences.
25: As tourism is more developed, people worry about the damage to the flora and fauna of the island.
	A. fruits and vegetables	B. flowers and trees
	C. plants and animals	D. mountains and forests
26: “It is a really difficult matter to decide how to solve now. I will need time to think it over”. 
 A. to sleep on it.	B. to make it better	 C. to make up for it	D. to think out of time
Mark the letter A,B,C or D on your sheet to indicate the word(s) OPPOSITE in meaning to the underlined words in each of the following sentences.
27: “That is a well-behaved boy whose behaviour has nothing to complain about” 
 A. good behavior	B. behaving improprely	 C. behaving nice	D. behaving cleverly
28: After five days on trial, the court found him innocent of the crime and he was released.
	A. benevolent 	B. innovative 	C. naive	D. guilty
29: His creer advancement was slow and he did not gain any promotion until he was 40, when he won the position of the company’s Chief Excutive.
Progress	B. elevation	C. rise	D. decrease
Choose the option among A, B, C, D which needs correcting to make a complete sentence
30: I didn’t feel like to go to church this morning because it was raining hard
 A B C D
31: Tom likes to gossip about other people, so he doesn’t like them to gossip about him.
	A B C D
32: Have a headache, an upset stomach, and a bad case of sunburn did not put me in a good mood 
	 A 	 B C D
for the evening.
33: . Genetic engineering is helping researchers unravel the mysteries of previously incurable diseases 
A B 
so that they get to its root causes and find cures.
 C	 D
34: The novelist Shirley Hazzard is noted for the insight, poetic style, and sensitive she demonstrates 
	A	B	 C	 	D
in her works.
Choose the word or phrase (A, B, C or D)) that best fits the blank space in the following passage:
Environmental Concerns
	Earth is the only place we know of in the universe that can support human life. (35) _____ human activities are making the planet less fit to live on. As the western world (36) _____ on consuming two-thirds of the world's resources while half of the world's population do so just to stay alive we are rapidly destroying the (37) _____ resource we have by which all people can survive and prosper. Everywhere fertile soil is (38) _____ built on or washed into the sea. Renewable resources are exploited so much that they will never be able to recover (39) _____. We discharge pollutants into the atmosphere without any thought of the consequences. As a (40) _____ the planet's ability to support people is being reduced at the very time when rising human numbers and consumption are (41) _____ increasingly heavy demands on it. 
	The Earth's (42) _____ resources are there for us to use. We need food, water, air, energy, medicines, warmth, shelter and minerals to (43) _____ us fed, comfortable, healthy and active. If we are sensible in how we use the resources, they will (44) _____ indefinitely. But if we use them wastefully and excessively, they will soon run out and everyone will suffer.
35: A. Although 	B. Yet 	C. Still 	D. Despite 
36: A. continues 	B. repeats 	C. follows	D. carries 
37: A. individual 	B. alone 	C. very 	D. solitary 
38: A. neither 	B. sooner 	C. rather	D. either 
39: A. utterly 	B. completely	C. quite 	D. greatly
40: A. result 	B. reaction 	C. development 	D. product 
41: A. making 	B. doing 	C. having 	D. taking 
42: A. living 	B. real 	C. natural 	D. genuine 
43: A. maintain	B. stay 	C. hold 	D. keep 
44: A. remain 	B. go 	C. last 	D. stand 
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 
 Ocean water plays an indispensable role in supporting life. The great ocean basins hold about 300 million cubic miles of water. From this vast amount, about 80,000 cubic miles of water are sucked into the atmosphere each year by evaporation and returned by precipitation and drainage to the ocean. More than 24,000 cubic miles of rain descend annually upon the continents. This vast amount is required to replenish the lakes and streams, springs and water tables on which all flora and fauna are dependent. Thus, the hydrosphere permits organic existence.
 The hydrosphere has strange characteristics because water has properties unlike those of any other liquid. One anomaly is that water upon freezing expands by about 9 percent, whereas most liquids contract on cooling. For this reason, ice floats on water bodies instead of sinking to the bottom. If the ice sank, the hydrosphere would soon be frozen solidly, except for a thin layer of surface melt water during the summer season. Thus, all aquatic life would be destroyed and the interchange of warm and cold currents, which moderates climate, would be notably absent.
 Another outstanding charateristic of water is that water has a heat capacity which is the highest of all liquids and solids except ammonia. This characterisitc enables the oceans to absorb and store vast quantities of heat, thereby often preventing climatic extremes. In addition, water dissolves more substances than any other liquid. It is this characteristic which helps make oceans a great storehouse for minerals which have been washed down from the continents. In several areas of the world these minerals are being commercially exploited. Solar evaporation of salt is widely practised, potash is extracted from the Dead Sea, and magnesium is produced from sea water along the American Gulf Coast.
45: The author’s main purpose in this passage is to ___________.
A. illustrate the importance of conserving water B. describe the properties and uses of water
C. compare water with other liquids D. explain how water is used in commerce and industry
46: The phrase “this vast amount” in line 4 of paragraph 1 refers to __________ .
A. 80,000 million cubic miles of water	B. 24,000 cubic miles of rain
C. 80,000 cubic miles of water	D. 300 million cubic miles of water
47: The word “replenish” in paragraph 1 can best replaced by ________ .
A. fill again	B. replace	C. evaporate	D. form
48: According to the passage, fish can survive in the oceans because ________ .
A. evaporation and condensation create a water cycle B. there are currents in the oceans
C. they do not need oxygen D. ice floats
49: Which of the following is NOT mentioned as a characterisitic of water?
A. Water can absorb heat	B. Water is good solvent.
C. Water contracts on cooling	D. Water expands when it is frozen
50: The word “outstanding” in paragraph 3 is closest in meaning to ________ 
A. exceptionally good	B. special	C. amusing	D. important
51: According the passage, the hydrosphere is NOT ___________ .
A. the part of the earth covered by water	B. responsible for all forms of life
C. in danger of freezing over	D. a source of natural resources
52: The author’s tone in the passage can best be described as ________ .
A. dispassionate	B. speculative	C. biased	D. dogmatic
53: The author organizes the passage by _______.
A. juxtaposition of true and untrue ideas	B. comparison and contrast
C. general statement followed by examples	D. hypothesis and proof
54: Which of the following statements would be the most likely to begin the paragraph immediately following the passage?
A. Water has the ability to erode land
B. Droughts and flooding are two types of disasters associated with water
C. Another remarkably property of ice is its strength
D. Magnesium is widely used in metallurgical processes
Read the following passage and blacken the letter A, B, C, or D on your answer sheet to indicate the correct answer for each of the questions.
Until recently, most American entrepreneurs were men. Discrimination against women in business, the demands of caring for families, and lack of business training had kept the number of women entrepreneurs small. Now, however, businesses owned by women account for more than $40 billion in annual revenues, and this figure is likely to continue rising throughout the 1990s. As Carolyn Doppelt Gray, an official of the Small Business Administration, has noted, "The 1970s was the decade of women entering management, and the 1980s turned out to be the decade of the woman entrepreneur". What are some of the factors behind this trend? For one thing, as more women earn advanced degrees in business and enter the corporate world, they are finding obstacles. Women are still excluded from most executive suites. Charlotte Taylor, a management consultant, had noted, "In the 1970s women believed if they got an MBA and worked hard they could become chairman of the board. Now they've found out that isn't going to happen, so they go out on their own". 
 	In the past, most women entrepreneurs worked in "women's" fields: cosmetics and clothing, for example. But this is changing. Consider ASK Computer Systems, a $22-million-a-year computer software business. It was founded in 1973 by Sandra Kurtzig, who was then a housewife with degrees in math and engineering. When Kurtzig founded the business, her first product was software that let weekly newspapers keep tabs on their newspaper carriers-and her office was a bedroom at home, with a shoebox under the bed to hold the company's cash. After she succeeded with the newspaper software system, she hired several bright computer-science graduates to develop additional programs. When these were marketed and sold, ASK began to grow. It now has 200 employees, and Sandra Kurtzig owns $66.9 million of stock. 
Of course, many women who start their own businesses fail, just as men often do. They still face hurdles in the business world, especially problems in raising money; the banking and finance world is still dominated by men, and old attitudes die hard. Most businesses owned by women are still quite small. But the situation is changing; there are likely to be many more Sandra Kurtzigs in the years ahead.
55: What is the main idea of this passage?
A.Women today are better educated than in the past, making them more attractive to the business world.
B.The computer is especially lucrative for women today.
C. Women are better at small business than men are.
D. Women today are opening more business of their own.
56:The word “excluded” is closest meaning to _________ .
A. not permitted in B. often invited to
C. decorators of D. charged admission to
57: All of the following were mentioned in the passage as detriments to women in the business world EXCEPT _________ .
A.Women were required to stay at home with their families.
B. Women lacked ability to work in business.
C.Women faced discrimination in business.
D.Women were not trained in business.
58: The word “that” refers to _________. 
A. a woman becomes chairman of the board. 
B. Women working hard
C. Women achieving advanced degrees 
D. Women believing that business is a place for them.
59: According to the passage, Charlotte Taylor believes that women in 1970s _________ .
A. were unrealistic about their opportunities in business management.
B. were still more interested in education than business opportunities
C. had fewer obstacles in business than they do today.
D. were unable to work hard enough to success in business.
60: The author mentions the “ shoesbox under the bed” in order to _________ .
A. Show the frugality of women in business
B. show the resourcefulness of Sandra Kurtzig
C. Point out that initially the financial resources of Sandra Kurtzig’s business were limited
D. suggest that the company needed to expand
61: The expression “ keep tabs on” is closest meaning to _________ .
A. recognize the appearance of B. keep records of
C. provide transportation for D. pay the salaries of
62: The word “hurdles” can be best replaced by __________ .
A. fences 	 B .obstacles 	 C. questions 	 D. small groups
63: It can be inferred from the passage that the author believes that business operated by women are small because ________ .
A. Women prefer a small intimate setting. B. Women can’t deal with money.
C. Women are not able to borrow money easily. D. many women fail at large businesses.
64: The author’s attitude about the future of women in business is ________ .
A. skeptical 	B. optimistic 	 	 C. frustrated 	 D. negative
WRITING
Part I. Finish each of the following sentences in such a way that it meams the same as the first one.
65. Although he was very tired, he agreed to help me with my homework.
 	Tired as he was, he agreed to help me with my homework.
66. Someone broke into John’s house last night.
	John had his house broken into last night.
67. “Sorry, I’m late.” said the boy to the teacher.
 `	The boy apologised to the teacher for being late.
68. I’m sure it wasn’t Mr. Phong you saw because he’s in Hanoi.
 It can’t have been Mr. Phong you saw because he’s in Hanoi.
69.The training course is too expensive; I can’t afford it.
 It was such an expensive course that I couldn’t afford it.
Part II. In about 140 words, write a paragraph about one of the mass media you find the most useful.
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined 
part differs from the other three in pronunciation in each of the following questions. 
1: 	A. epidemic 	B. illegal  	C. education  	D. competitor
2: 	A. compose 	B. opponent  	C. wholesale 	D. colony
Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from 
the other three in the position of the primary stress in each of the following questions.
3:	A. discuss 	B. waving 	C. airport 	D. often
4: A. interview B. difficulty C. simplicity D. beautiful
5: 	A. obligatory	B. geographical	C. international	D. undergraduate
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. 
6: The next meeting _________ in May.
	A. will hold 	B. will be held 	 C. will be holding 	D. will have held
7: The librarian told us not _________ reference books out of the library.
 A. taking B. to take C. take D. took
8: John: "Congratulations! You did great. 
 Mary: - " ___________.”
	 A. It’s nice of you to say so.	 	B. It’s my pleasure.	
	 C. You’re welcome.	D. That’s okay.
9: My responsibility is to _________ my little brothers. 
	A. take care of	B. join hands	C. take over	D. work together
10: In Vietnam, two or more ________ may live in a home. 
	 A. generations	B. generous	 C. generation	D. generators
11: __________ candidates are likely to succeed in job interviews. 
	 A. Nervous 	B. Self-conscious 	 C. Self-doubt 	D. Self-confident 
12: A good essay must __________contain enough interesting ideas and specific exam but also have good organization. 
	A. in addition 	B. either 	C. not only	D. as well 
13: Minh : " My first English test was not as good as I expected " 
 Thomas : " _________."
	A. Good Heavens!	B. Never mind , better job next time!
	C. That's brilliant enough!	D. It's okay . Don't worry.
14: The ground is wet. It ________ rained last night.
	A. must	B. must have	C. may have	D. might have
15: There are several means of mass communication. The newspaper is one. Television is ______.
	A. another B. other	C. the another	D. the other.
16: Do you know the woman ______ lives next door?
	A. she B. who C. whom	D. her
17: If you _______ less last night, you _______ so bad today.
	A. had drunk- would not have felt	B. drank- would not feel 
	C. had drunk- would not feel	D. would have drunk- would not feel
18: I can’t sleep ________ the hot weather.
	A. because of	 	B. as	C. because	D. since
19: British and Australian people share the same language, but in other respects they are as different as _________.
	A. cats and dogs	B. chalk and cheese	C. salt and pepper	D. here and there
20: The boy was sent to the police because of several ________ that he had taken part in.
	A. set-to	B. set-toes	 	C. sets-to	D. set-tos
21: I just can't ______ that noise any longer!
	A. put up with	B. stand in for	C. sit out	D. stand up to
22: ______ should a young child be allowed to play with fireworks without adult
supervision
	A. Under no circumstances	B. No sooner than 	
	C. Always	D. Only when
23: Nobody phoned while I was out, ________?
 A. wasn’t I B. was I C. did they D. didn’t they
24: _________ migrate long distances is well documented.
	A. That it is birds	B. That birds	C. Birds that	D. It is that birds
Mark the letter A, B, C or D on your answer sheet to indicate the word(s) SIMILAR in meaning to the underlined word(s) in each of the following questions.
25: “It is a really difficult matter to decide how to solve now. I will need time to think it over”. 
 	A. to sleep on it.	B. to make it better	 C. to make up for it	D. to think out of time
26: “He insisted on listening to the entire story”. 
 	A. part	B. funny	 C. whole	D. interesting
27: When being interviewed, you should concentrate on what the interviewer is saying or asking you. 
	A. be related to 	B. be interested in	 	C. pay all attention to D. express interest in
28: He drives me to the edge because he never stops talking.
	A. steers me 	B. irritates me	C. moves me	D. frightens me
29: . School uniform is required in most of Vietnamese schools.
	A. divided	B. depended	C. compulsory	D. paid
Mark the letter A, B C or D on your answer sheet toindicate the underlined part that needs correction in each of the following questions. 
30: The skin receives nearly the third of the blood pumped out by the heart.
	 A	 B	 C	 D
31: I had my motorbike repair yesterday but now it still doesn’t work.
	A	 B	C	D
32: If you are working with young children in a primary school, you will find that teaching 
 A B C 
lively songs and rhymes are very popular.
	 D
33: Paris has been well-known about its famous monuments, beautiful music, and wonderful 
	 A	 B	 C
restaurants for over 100 years.
	 D
34: Foreign students who are doing a decision about which school to attend may not know 
	 A	B	 C
exactly where the choices are located. 
	 D
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.	
 The English channel 
	Engineers have dreaming of an underwater link between Britain and France (35) ____ 1802 . Finally in 1994 the Channel Tunnel ( nicknamed “ The Chunnel “ by the English ) was ( 36) _____ opened . 
	This fifteen billion dollar project took seven years to (37) ____. It is about 50 km long and built 45 metres under the seabed . The trains which go through the Chunnel can travel at up 300 km/h due to the (38) _____ electrical system . 
	The journey from London to Paris via the Chunnel takes just three hours . It is also (39) _____ for drivers since they can load their cars onto the trains . They don’t need to book in (40) _____ , as trains (41) _____ every few minutes . 
	However, while on the train , there isn’t much to do and many (42) _______ the Chunnel for this 
(43) ______ the ferries , there is no duty-free shopping , no videogame parlou or refreshment stand (44) ______ can you look outside and enjoy the view . As a result , many would find the Chunnel unappealing and would take the ferry instead . 
35 : 	A. from 	B.during 	C. since 	D. ago 
36: 	A . officially 	B. regularly 	C. correctly 	D. typically 
37:	A. perform 	B. achieve 	C. deal with 	D. complete 
38:	A. forward 	B. advanced 	C. higher 	D. increased 
39: 	A. benefit 	B. handy 	C. advantage 	D. spare 
40:	A. advance 	B. time 	C. ahead 	D. future 
41: 	A. go away 	B.exit 	C. set out 	D. depart 
42:	A. criticise 	B. accuse 	C. complain 	D. blame 
43: 	A. Opposite 	B. Not alike 	C. Unlike 	D. Dissimilar 
44: 	A. Nor 	B. Either 	C. Neither 	D. Not 
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 45 to 54.
	A recent survey of crime statistics shows that we are all more likely to be burgled now than 20 years ago and the police advise everyone to take a few simple precautions to protect their homes. 
	The first fact is that burglars and other intruders prefer easy opportunities, like a house which is very obviously empty. This is much less of a challenge than an occupied house, and one which is well-protected. A burglar will wonder if it is worth the bother.
	There are some general tips on how to avoid your home becoming another crime statistic. Avoid leaving signs that your house is empty. When you have to go out, leave at least one light on as well as a radio or television, and do not leave any curtains wide open. The sight of your latest music centre or computer is enough to tempt any burglar.
	Never leave a spare key in a convenient hiding place. The first place a burglar will look is under the doormat or in a flower pot and even somewhere more 'imaginative' could soon be uncovered by the intruder. It is much safer to leave a key with a neighbour you can trust. But if your house is in a quiet, desolate area be aware that this will be a burglar's dream, so deter any potential criminal from approaching your house by fitting security lights to the outside of your house.
	But what could happen if, in spite of the aforementioned precautions, a burglar or intruder has decided to target your home. Windows are usually the first point of entry for many intruders. Downstairs windows provide easy access while upstairs windows can be reached with a ladder or by climbing up the drainpipe. Before going to bed you should double-check that all windows and shutters are locked. No matter how small your windows may be, it is surprising what a narrow gap a determined burglar can manage to get through. For extra security, fit window locks to the inside of the window.
	What about entry via doors? Your back door and patio doors, which are easily forced open, should have top quality security locks fitted. Even though this is expensive it will be money well spent. Install a burglar alarm if you can afford it as another line of defence against intruders.
	A sobering fact is that not all intruders have to break and enter into a property. Why go to the trouble of breaking in if you can just knock and be invited in? Beware of bogus officials or workmen and, particularly if you are elderly, fit a chain and an eye hole so you can scrutinise callers at your leisure. When you do have callers never let anybody into your home unless you are absolutely sure they are genuine. Ask to see an identity card, for example.
	If you are in the frightening position of waking in the middle of the night and think you can hear an intruder, then on no account should you approach the intruder. It is far better to telephone the police and wait for help.
45: A well-protected house _________ .
	A. is less likely to be burgled. 	B. is regarded as a challenge by most criminals.
	C. is a lot of bother to maintain.	D. is very unlikely to be burgled.
46: According to the writer, we should ________ .
	A. avoid leaving our house empty.	B. only go out when we have to.
	C. always keep the curtains closed.	
	D. give the impression that our house is occupied when we go out.
47: The writer thinks that hiding a key under a doormat or flower pot __________.
	A. is predictable.	B. is useful.	
	C. is imaginative.	D. is where you always find a spare key.
48: What word best replaces “desolate” in paragraph 4?
	A. isolated	B. populous	C. dissatisfying	D. depressing
49: What word best replaces “aforementioned” in paragraph 5?
 	A. foreseen	B. predicted	C. foresaid	D. forethought
50: Gaining entry to a house through a small window _________ .
	A. is surprisingly difficult.	
	B. is not as difficult as people think.
	C. is less likely to happen than gaining entry through a door.	
	D. is tried only by very determined burglars.
51: According to the writer, window locks, security locks and burglar alarms ________.
	A. cost a lot of money but are worth it.	B. are good value for money.
	C. are luxury items.	D. are absolutely essential items.
52: The writer argues that fitting a chain and an eye hole _________.
	A. will prevent your home being burgled.	
	B. avoids you having to invite people into your home.
	C. is only necessary for elderly people.	
	D. gives you time to check if the visitor is genuine.
53: What word best replaces “scrutinise” in paragraph 7?
	A. glance	B. gaze 	C. search	D. examine
54: The best title for the text is _________.
	A. Increasing household crime.	B. Protecting your home from intruders.
	C. What to do if a burglar breaks into your home.	D. Burglary statistics
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 55 to 64. 
	Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected. 
	The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.
	On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.
	What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.
As the discussion about their safety continues, it appears that it's best to use mobile phon