单项选择题

The streets are ______ with people.

A．live
B．lively
C．living
D．alive
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单项选择题
In less than a millionth of a second the vast computer of an international airline can ______ accept 800 booking inquiries, and search its 50 million memory units for appropriate replies.
A．simultaneously
B．implicitly
C．cautiously
D．confidentially
单项选择题
A ______ of the long report by the budget committee was submitted to the mayor for approval.
A．shorthand
B．scheme
C．schedule
D．sketch
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