单项选择题

First designated in 1970, Earth Day has become an annual international event ______ concerns about environmental issues such as pollution.

A．dedicated to raising
B．dedicated raising
C．dedicated to raise
D．that dedicates to raising
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单项选择题
All his plan for starting his own business fell ______
A．in
B．through
C．down
D．away
单项选择题
It would be unwise to ______ too much importance to what he said.
A．emphasize
B．attach
C．pay
D．concentrate
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