According to the passage, cell phones are especially popular with young people because

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.

     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 phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

According to the passage, cell phones are especially popular with young people because ____________.

• A. they make them look more stylish.
• B. they keep the users alert all the time.
• C. they cannot be replaced by regular phones.
• D. they are indispensable in everyday communications.

• Câu 2: Mã câu hỏi: 17235

  The word "means" in the passage most closely means ____________.

  • A. meanings
  • B. expression
  • C. transmission
  • D. method

• Câu 3: Mã câu hỏi: 17236

  Doctors have tentatively concluded that cell phones may ____________.

  • A. cause some mental malfunction
  • B. change their users’ temperament.
  • C. change their users’ social behaviours.
  • D. damage their users’ emotions.

• Câu 4: Mã câu hỏi: 17237

  "Negative publicity" in the passage most likely means ____________.

  • A. widespread opinion about bad effects of cell phones.
  • B. information on the lethal effects of cell phones.
  • C. the negative public use of cell phones.
  • D. poor ideas about the effects of cell phones.

• Câu 5: Mã câu hỏi: 17238

  The changes possibly caused by the cell phones are mainly concerned with ____________.

  • A. the smallest units of the brain
  • B. the mobility of the mind and the body
  • C. the resident memory
  • D. the arteries of the brain

• Câu 6: Mã câu hỏi: 17239

  The man mentioned in the passage, who used his cell phone too often, ____________.

  • A. had a problem with memory.
  • B. abandoned his family.
  • C. suffered serious loss of mental ability.
  • D. could no longer think lucidly.

• Câu 7: Mã câu hỏi: 17240

  The word "potentially" in the passage most closely means ____________.

  • A. certainly
  • B. obviously
  • C. privately
  • D. possibly

• Câu 8: Mã câu hỏi: 17241

  According to the passage, what makes mobile phones potentially harmful is ____________.

  • A. their radiant light.
  • B. their raiding power.
  • C. their power of attraction.
  • D. their invisible rays.

• Câu 9: Mã câu hỏi: 17242

  According to the writer, people should ____________.

  • A. keep off mobile phones regularly.
  • B. never use mobile phones in all cases.
  • C. only use mobile phones in medical emergencies.
  • D. only use mobile phones in urgent cases.

• Câu 10: Mã câu hỏi: 17243

  The most suitable title for the passage could be ____________.

  • A. Technological Innovations and Their Price. 
  • B. The Way Mobile Phones Work.
  • C. The Reasons Why Mobile Phones Are Popular.
  • D. Mobile Phones: A Must of Our Time