单项选择题

From thousands of kilometers above our earth, a communications satellite ______ a signal from one side of the world and relays it directly to the other.

A．receives
B．accepts
C．admits
D．offers
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单项选择题
During the first half of the twentieth century, the average American household was ______ by the introduction of a group of machines that profoundly altered the daily lives of housewives.
A．transformed
B．transferred
C．transmitted
D．transported
单项选择题
______ a wrong address, she could not find her friend's house.
A．Giving
B．To be given
C．Having given
D．Having been given
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