单项选择题

All ______ at the present time is an urgent and .rational decision other than endless dispute.

A．what is needed
B．for our needs
C．that is needed
D．the thing needed
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单项选择题
The incredible precision of the equipment is ______ to the mechanical skill of the engineers who built it.
A．testimony
B．symbol
C．evidence
D．attribute
单项选择题
Bread and butter ______ popular with the westerners.
A．is
B．are
C．were
D．be
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