单项选择题

A．Americans will not need to work in the future.
B．There are fewer babies in America now.
C．Young couples now prefer to remain childless.
D．There is more than one factor contributing to changes in life-styles in America today.
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单项选择题
A．She has bought a new one.B．She has none at present.C．She has only an old one.D．Her sister has given her one.
A．She has bought a new one.
B．She has none at present.
C．She has only an old one.
D．Her sister has given her one.
单项选择题
A．His computer doesn’t work well.B．He isn’t getting along with his staff.C．He didn’t register for a proper course.D．He can’t apply the theory to his program.
A．His computer doesn’t work well.
B．He isn’t getting along with his staff.
C．He didn’t register for a proper course.
D．He can’t apply the theory to his program.
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