81. One thing is sure that the participants in the study ____.

1. had normal hearing
2. were born blind
3. wore blindfolds
4. were divided into two groups

82. Under what conditions, according to Pare, did the blind testees perform better than their sighted counterparts?

1. When both used one ear.
2. When the speakers were concealed.
3. When the sounds were tuned down.
4. When both were restricted to blindfolds.

83. Knudsen explained the better hearing on the part of the blind in terms of ____.

1. cognitive psychology
2. visual images
3. binaural cues
4. monaural cues

84. The Canadian scientists did their test to answer the whether ____.

1. the blind can hear as well as the sighted
2. the blind have hearing capabilities
3. blind people track sounds better
4. folk wisdom is educational

85. What folk wisdom holds in the passage ____.

1. was scientifically tested in Canada and U.S., with different results produced
2. has been scientifically verified
3. merits further investigation
4. is surprising to everyone

(Reference keys.)