soal dan kunci jawaban explanation text

  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 18994 presented by Guglielmo Marconi. By these two technologies, then a cell phone was born. However do you know how actually cell phones work?

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.

1. 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

2. 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

3. How telephone celluler work …
A. By signal radio
B. By battery
C. By user
D. By GPS Signal
E. By transmitting signal

4. Who the telephone celluler founder …
A. Graham bells
B. Guiglemo Marconi
C. Wilbur O’Wright
D. Antonio Meucci
E. BJ Habibie

5. 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