What remains to be determined is how well the device will help Dennis cope with his surroundings as he begins to walk and venture further into his environment.
Meanwhile, Telesensory, Inc., is working on the development of sonar(声呐) device with somewhat the same sensitivity as Dennis' for use by schoolage children.________.helping the blind to see and learn as well as others
B.benefiting the learning process of blind children
C.solving blind children's psychological problems
D.finding out how children develop intellectually
2. Infant Dennis becomes the subject of the experiment most probably because ________.he already lags behind the sighted children
B.he leads a life as normal as any other children
C.he is at the early stage of the learning process
D.he has the aid of a sonartype electronic device
3. What can we learn about infant Dennis' device?
A.It's the first design that was designed for blind adults.
B.Its battery is as small as a halfdollar coin.
C.It is functionally similar to a sane or guide dog.
D.It has been improved by Telesensory Systems, Inc.
4. In the third paragraph, “its edge” refers to “________”.the edge of an object
B.the edge of the device
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