单项选择题

From which languages is the word "television" taken

A．Greek and English.
B．Latin and English.
C．Greek and Latin.
D．English and Japanese.
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单项选择题
How is television different from radio
A．Sound is changed into electromagnetic waves.
B．Light is changed into electromagnetic waves.
C．Both sound and light are changed into electromagnetic waves.
D．Either sound or light is changed into electromagnetic waves.
单项选择题
The main purpose of the laptop program is to give each student a laptop to ______.
A．use for their schoolwork
B．get access to the Internet
C．work at home
D．connect them to libraries
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