题目内容
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[主观题]
Which of the following makes the demonstration most persuasive？A．To read through glass, bl
Which of the following makes the demonstration most persuasive？
A．To read through glass, blindfolded.
B．To identify the collor 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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