单项选择题

Such a database would be extremely costly to set up .

A．update
B．transfer
C．destroy
D．establish
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单项选择题
Jane said that she couldn t toleratethe long hours.
A．spend
B．take
C．stand
D．last
单项选择题
At that time, we did not fully graspthe significance of what had happened.
A．give
B．attach
C．understand
D．lose
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