单项选择题

The Faraday effect was the first demonstration of a connection between magnetism and light.

A．questioning
B．proof
C．achievement
D．symbol
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单项选择题
She was really frightfully ugly.
A．charming
B．unpleasant to look at
C．fearful
D．astonished
单项选择题
They walked through the great forest.
A．tree
B．woods
C．grassland
D．meadow
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