单项选择题

This is the ______ to an improvement of their living conditions.

A．key
B．decision
C．essence
D．alternative
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单项选择题
She once again went through her composition carefully to ______ all spelling mistakes from it.
A．eliminate
B．withdraw
C．diminish
D．delete
单项选择题
The young couple were quite excited by the ______ of having their first child.
A．perspective
B．prospect
C．future
D．foresight
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