单项选择题

Which of the following makes the demonstration most persuasive

A．To read through glass, blindfolded.
B．To identify the eol0ar and shape of light on a screen while securely blindfolded.
C．To carry out the test with someone pressing on her eyeballs.
D．To work from behind a screen, blindfolded and with a card round her neck.
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单项选择题
Why did Shaefer put the paper under glass
A．To prevent Rosa from feeling the print.
B．To stop the reflection of heat.
C．To make things as difficult as possible.
D．To stop her from cheating.
单项选择题
Which of the following statements is true
A．The men in Samoa were not quite blind.
B．A girl called Virginia could read newsprint even when she was blindfolded.
C．Rosa' s ability to see was confined to her fingers.
D．The result of the last test on Rosa was least doubtable.
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