单项选择题

Over the years, more money has been put into education, but ______ in certain areas little has been achieved.

A．gravely
B．regrettably
C．forcibly
D．graciously
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单项选择题
It was no ______ that his car was seen near the bank at the time of the robbery.
A．coincidence
B．convention
C．certainty
D．complication
单项选择题
Trade secrets and ______ information are likely to be among the most valuable assets of many businesses.
A．secret
B．private
C．intimate
D．confidential
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