As we know, computers are used to store and （） information efficiently.

单项选择题High grades are supposed to （） academic ability, but John’s actual performance did not confirm this.

A．certify
B．clarify
C．classify
D．notify

单项选择题Elisabeth did not enter the museum at once, but （） in the courtyard.

A．resided
B．dwelled
C．lingered
D．delayed