Ejercicio Option A - I * Comprehension · Inglés PAU Andalucía Ordinaria Titular 2013

OPTION A: “Are mobile phones dangerous?”

1 Are mobile phones dangerous to your health? It is difficult to know for sure. Some researchers suggest that heavy

2 users of mobile phones are at a greater risk of developing brain tumours. Nevertheless, many other studies suggest there

3 are no links between cancer and mobile phone use. Over three billion people use mobile phones on a daily basis, and many

4 talk for more than an hour a day. Mobile phone antennas are similar to microwave ovens. While both rely on electromagnetic

5 radiation, the radio waves in mobile phones are lower in radio frequency (RF). Microwave ovens have enough RF to cook

6 food and are known to be dangerous to human tissues. However, the concern is that the lower frequency radio waves that

7 mobile phones rely on may also be dangerous.

8 Some researchers believe that other types of wireless technology may also be dangerous to human health, including

9 laptops, cordless phones, and gaming consoles. They say that many cordless phones emit dangerous levels of

10 Electromagnetic Radiation (ER) even when they are not in use. They even suggest keeping electronic devices, such as

11 computers and alarm clocks, out of bedrooms, or at least 1.8 metres from your pillow. Besides, a growing number of health

12 professionals recommend that children and teens, whose brains are still developing, use mobile phones only for

13 emergencies. Concerned medical experts use the example of tobacco to illustrate the potential risks. Many years ago,

14 people smoked freely and were not aware of the effects of cigarettes on their health. Today, people know that cigarettes

15 cause lung cancer, though it is still unknown exactly how or why. Some doctors fear that the same thing will happen with

16 devices such as mobiles.

I * COMPREHENSION (4 points: questions 1-3, 1 point each; 4-5, 0.5 points each)

ANSWER QUESTIONS 1-3 ACCORDING TO THE INFORMATION GIVEN IN THE TEXT. USE YOUR OWN WORDS.

1.

According to the article, do mobile phones lead to brain tumours? Explain.

2.

Are mobile phones the only devices that can damage our health? Explain.

3.

Why do some experts think that mobile phones can be harmful to the development of children's brains?

ARE THESE STATEMENTS TRUE OR FALSE? JUSTIFY YOUR ANSWERS WITH THE PRECISE WORDS OR PHRASES FROM THE TEXT, OR USE YOUR OWN WORDS.

4.

Microwave ovens and mobile phones emit similar levels of RF.

TRUE

FALSE

5.

In the past the negative effects of tobacco were unknown.

TRUE

FALSE