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Very often, the human eye and brain can recognize familiar configurations even if all but a few significant data points are left out. It is this creative power of perception that may someday allow profoundly deaf people to converse in sign language over a special “telephone”. Researchers have found that thirteen spots of light on each hand and one spot on the nose—to show head motion and provide a reference point for hand position—are sufficient for intelligibly rendering of American Sign Language. The bright spots are produced by attaching pieces of reflective tape to the nose, fingertips, wrists, and backs of the second knuckles and adjusting a closed-circuit television system so that only the bright spots appear on the screen of the receiver. After a few minutes of familiarization, pairs of deaf people are able to converse freely over television. Deaf people and other sign readers can, of course, understand sign language and written subtitles on commercial television. But widespread link-ups of television systems for personal communications are economically impossible because a standard picture requires about one thousand times more information than a telephone circuit can carry. The researchers think it likely that the simplified picture of twenty seven moving dots used in their experiments can be reduced to the capacity of a telephone line.
1. Which of the following would be the most appropriate title for the passage?
2. According to the passage, the person viewing the closed-circuit screen sees __________.
3. What causes the bright spots mentioned in the passage?
4. It can be inferred from the passage that some television broadcasts already include which of the following?
5. How many spots of light will be used in the new communications system?

问题1选项
A.A New Application of Commercial Television.
B.A Telephone for Deaf People.
C.Capabilities of the Human Eyes and Brain.
D.The Advantages of Sign Language.
问题2选项
A.bright dots
B.two hands and a face
C.the person using sign language
D.a written message
问题3选项
A.Special movable points.
B.Special tape.
C.Small light bulbs.
D.Small mirrors.
问题4选项
A.Advertising for the new products.
B.Instruction in how to communicate in sign language.
C.Programs subtitled for deaf people.
D.Personal conversations with deaf people.
问题5选项
A.1.
B.13.
C.14.
D.27.
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