单项选择题

It ______ to see so many children in that mountainous area cannot even afford elementary education.

A．pains her
B．makes her pain
C．is paining
D．is pained
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单项选择题
The football match is scheduled to be televised ______.
A．live
B．lively
C．alive
D．life
单项选择题
Internet, a ______ of millions of computers linked world wide, is the largest system serving e-mail messengers.
A．unity
B．connection
C．network
D．combination
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