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Are Cell Phones Dangerous?

Quizzes

For advanced learners

Vocabulary quiz

This quiz is based on this cell phone vocabulary page.

1 Another word for dangerous is .
2 The device used for playing video games is a gaming .
3 The term "funded" means .
4 Microwaves are a type of .
5 A synonym for "to show" is .

Reading comprehension quiz

This quiz is based on this cell phone reading page.

1 According to the article, do cell phones lead to brain tumours? .
2 Why does the article mention the 1990s? .
3 Why does the article mention microwave ovens?
4 Which of the following is NOT mentioned in the article?
5 How is cell phone use compared to tobacco use in this article? .

Grammar quiz

When writing numbers it is important to be consistent within one essay or document. Here is a guideline:

  1. Numbers one through nine should be written out.
  2. Numbers 10 and up should be written as numerals.
  3. At the beginning of a sentence numbers should be written out. (Six people had cell phones in our class.)
  4. Large numbers should be written in the simplest form possible: three million; 345,987
  5. When you do write numbers such as 22 or 145 use a hyphen: twenty-two; one-hundred and forty-five
  6. If you have more than one number in a sentence, choose one format and stick with it: There are five boys and thirteen girls in our class.
  7. Use an apostrophe before a set of years ('90s) or not at all (1990s). Do not put it between the year and s (1990's).

Using the above rules as a guideline, spot the problems in these sentences:

  1. The main problem with the current research is that mobile phones have only been popular since the 1990's.
  2. This concerns many health professionals who point out that many cancers take at least ten years to develop.
  3. Over 3,000,000,000 people use cell phones on a daily basis, and many talk for more than 1 hour a day.
  4. They even suggest keeping electronic devices, such as computers and alarm clocks, out of bedrooms - or at least 6 feet from your pillow.

Answers

  1. The main problem with the current research is that mobile phones have only been popular since the 1990s.
  2. This concerns many health professionals who point out that many cancers take at least 10 years to develop.
  3. Over three billion people use cell phones on a daily basis, and many talk for more than one hour a day.
  4. They even suggest keeping electronic devices, such as computers and alarm clocks, out of bedrooms - or at least six feet from your pillow.

    Cell phone Topics