单项选择题

Patches are ______.

A．rays
B．waves
C．spots
D．lines
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单项选择题
What was the most difficult test of her ability
A．To read through glass-blindfolded.
B．To identify the colour and shape of light on a screen while securely blindfolded.
C．To carry out tasks with someone pressing on her eyeballs.
D．To work from behind a screen, blindfolded and with a card round her neck.
单项选择题
The first white man to visit Somoa found men who ______.
A．were not entirely blind
B．described things by touching them
C．could see with their hands
D．could see when they held hands
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