Hear recording carefully and find out the incorrect words which are different from the transcription and what the speaker(s) said. This type of question requires you to listen for and point out the differences between a recording and a transcription.
1. Listen to the recording and highlight incorrect words.
Many people are concerned that cell phone radiation will cause cancer or other serious health hazards. The theory of scientific evidence has not linked cell phones with any health concerns. Cell phones emit low levels of radio frequency energy (RF). Over the past 15 years, scientists have conducted hundreds of studies looking at the biological effects of the radio frequency energy emitted by cell phones. While some researchers have reported biological changes associated with RF energy, these studies have failed to be replicated. The majority of findings published have failed to show an association between exposure to radio frequency from a cell phone and health problems. The low levels of RF cell phones emit while in use are in the microwave radiation range. They also emit RF at substantially reduced time intervals when in the stand-by mode. Whereas high levels of RF can reduce health effects (by heating tissue), exposure to low level RF that does not produce heating effects causes no known severe health effects.Click here for Answer