单项选择题

Passage One What is the major problem of many elderly couples

A．They have not enough money.
B．They have to leave home.
C．They feel useless and lonely.
D．They have no children or relatives.
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单项选择题
A phone user’s location is shown by______.
A．which cellphone tower he is connected to
B．which cellphone network he is connected to
C．how often he uses the phone every day
D．the content of his every phone call
单项选择题
A．evokedB．evolvedC．calledD．developed
A．evoked
B．evolved
C．called
D．developed
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