Name : I Wayan Yoga Candra Wibawa
Class : XI MIPA 6
No : 5
Cell Phone
A cell phone is a great gadget in this modern world. What is a cell phone? A cell
phone is actually a radio in certain way. Like a radio, by a cell phone we can communicate to
other people in real time. Million people use cell phone for their communication. Even
nowadays, people use cell phones to communicate in voice, written and data.
Alexander Graham Bell is the person who make great change in the way people
communicate to each other. He invented a telephone in 1876. While wireless radio was
formally known in 1894 presented by Guglielmo Marconi. By these two technologies, then a
cell phone was born.
This short explanation on how a cell phone work is really wonderful. A cell phone or
in long term “cellular telephone’ works by transmitting signals of radio to towers of cellular.
The towers are networked to a central switching station. The connection usually uses wire,
fiber optic-cables, or microwave.
Then the central switching station which handles calls in certain given area is directed
connected to the wire-based telephone system. Cellulars are pick up by the towers and
relayed to another cellular telephone user or the user of wire-based telephone network.
The towers vary in the capacity and capability to receive signals. Some can receive
the signal from short distance and the others can receive more distance. However, there are
usually more than one tower in certain given area so that the system can handle the increasing
telephone traffic.
37. What the main idea of paragraph three …
A. How to use the telephone
B. The founder of telephone
C. The part of telephone
D. Function of telephone
E. How to make the telephone
Answer: C ( Because the third paragraph describes the part of telephone to make it work, like
transmitting signals, central switching station, fiber optic-cables etc)
38. What is cell phone …
A. Cell phone is an object can movement
B. Cell phone is general object
C. Cell phone is a contraption thing
D. A cell phone is actually a radio in certain way
E. Cell phone is Graham Bells’ founder
Answer: D ( Because in the first paragraph it’s explained clearly “What is a cell phone?”,
then explained that “A cell phone is actually a radio in certain way”.)
39. How telephone celluler work …
A. By signal radio
B. By battery
C. By user
D. By GPS Signal
E. By transmitting signal
Answer: E (In the third paragraph there is a sentences “A cell phone or in long term cellular
telephone works by transmitting signals of radio to towers of cellular” so a cell phone works
by transmitting signals.)
40. Who is the presented the wireless radio in 1894 …
A. Graham bells
B. Guglielmo Marconi
C. Wilbur O’Wright
D. Antonio Meucci
E. BJ Habibie
Answer : B (In the second paragraph there is a sentences “While wireless radio was formally
known in 1894 presented by Guglielmo Marconi” so the answer is Guglielmo Marconi)
41. What the text about …
A. The telephone founder
B. The part of telephone
C. The history of telephone
D. How telephone work
E. How much the telephone
Answer: C ( Overall the text discuss about the history of telephone)
