单项选择题

The technology manufacturer's new laptop prototype is a ______ improvement on the previous model.

A．signify
B．significance
C．significant
D．significantly
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单项选择题
The client's secretary called to ______ the itinerary for his trip to Mongolia.
A．confess
B．concur
C．confirm
D．consume
单项选择题
We should respond ______ to the invitation to attend Janet's dinner party next week.
A．promptly
B．extremely
C．highly
D．inwardly
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