A fax machine works by scanning each
outgoing page, turning the image into a series
of light and dark dots. This pattern is then
translated into audio tones, and sent over
regular phone lines. The receiving fax "hears"
the tones, pieces the grid together, and prints
the total number of dots. ----.
A) He invented a machine capable of receiving signals from a telegraph wire
B) The idea of fax machines has been around for a long time
C) They were an easy way to send documents to any phone number
D) The resulting document is a black and white copy of the original page
E) Then he finally managed to translate these symbols into images on paper
The term "broadband" refers to
telecommunication in which a wide band of
frequencies is ready to send information. ----. It
allows users to access the Internet at higher
speeds than traditional modems. High-speed
Internet allows users access to advance data
processing and high-speed transmission technologies.
A) They include cable modem, wireless access, satellite access, and power line access
B) It is frequently used as another term for high-speed Internet access
C) However, there are also many advantages of using broadband
D) There was obviously no need to dial-up your Internet provider
E) The information was downloaded into his computer at a higher speed
People believe that cell phones cause
cancer, especially brain cancer. A few
studies suggested a link with certain rare
types of brain tumours. ----o These studies
didn't receive front-page coverage.
Therefore, most consumers could not notice them.
A) Electronic devices, like cell phones, can cause cancer in the people who use them
B) Using a cell phone while driving increases the risk of having a car accident
C) Keeping your hands free and your eyes on the road is a more significant issue
D) Lower frequency radiation has not been proven to cause these DNA changes
E) But most studies show that there is no link between cell phone use and brain cancer
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