单项选择题

The police have installed cameras at dangerous road ______ to film those who drive through red traffic lights.

A．trenches
B．utilities
C．pavements
D．junctions
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单项选择题
He was such a genius that he almost ______everything he did.
A．excelled in
B．excelled over
C．excelled about
D．excelled on
单项选择题
Up until that time, his interest had focused almost ______ on fully mastering the skills and techniques of his craft.
A．restrictively
B．radically
C．inclusively
D．exclusively
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