单项选择题

The captain ______ the horizon for approaching ships.

A．scanned
B．scrutinized
C．explored
D．swept
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单项选择题
They stood gazing at the happy ______ of children playing in the park.
A．perspective
B．view
C．landscape
D．scene
单项选择题
Your story about the frog turning into a prince is ______ nonsense.
A．sheer
B．shear
C．shield
D．sheet
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