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1. According to the passage, the person viewing the closed-circuit screen sees
A. two hands and a face B. bright dots
C. a person using sign language D. a written message
2. What causes the bright spots appearing on the screen of the receiver?
A. Movable points. B. A special tape.
C. Small mirrors. D. Small lights.
3. How many spots of light will be used in the new communication system?
A. 26. B. 13. C. 14. D. 27.
4. Which of the following would be the best tide for the passage?
A. A New Application of Commercial Television
B. A Telephone for Deaf People
C. Capabilities of the Human Eye and Brain
D. American Sign Language
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Very often, the human eye and brain can recognize familiar shapes even if all but a few significant points are left out. It is this creative power of the human eye and brain that may someday allow profoundly deaf people to talk 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 the performing of American Sign Language. The bright spots are produced by attaching pieces of a special tape to the nose, fingertips, and wrists 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 communicate freely over television. Deaf people and other sign readers can, of course, understand sign language on commercial television. But widespread link-ups of television systems for personal communication 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. According to the passage, the person viewing the closed-circuit screen sees
A. two hands and a face B. bright dots
C. a person using sign language D. a written message
2. What causes the bright spots appearing on the screen of the receiver?
A. Movable points. B. A special tape.
C. Small mirrors. D. Small lights.
3. How many spots of light will be used in the new communication system?
A. 26. B. 13. C. 14. D. 27.
4. Which of the following would be the best tide for the passage?
A. A New Application of Commercial Television
B. A Telephone for Deaf People
C. Capabilities of the Human Eye and Brain
D. American Sign Language
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Find which Direction Is South
Do you have a good sense of direction？If not，please take with you a compass. But if you forget to take a compass , you can still find your way.
It's never a good idea to imagine that the family member who was entrusted(委托〕with the job of map reading actually knows where the family is. You can tell by the "slightly confused look on their face that nothing on the ground seems to match the map. Never mind. The sun is shining and it’s still morning. If you don't know the exact time，you can still find out where south is，but you'll need to be patient.
①Find a straight stick and put it in the ground in a place where you can mark its shadow.
②Try to position the stick as vertically(垂直)as you can. You can check this by making a simple plumb line（铅锤线）with a piece of string（绳子） and weigh. You haven't got any string? Ok, use a thread from your clothes with a button tied at the end to act as a weight.
③Mark the end of the shadow cast by the stick.
④Wait approximately half an hour and mark the end of the shadow again.
⑤Keep doing this until you have made several marks.
⑥The mark nearest the stick will represent the shortest shadow, which is cast at midday, when the sun is highest in the sky and pointing to the exact south.
⑦Pick a point in the distance along the line between the shortest shadow and the stick.
⑧That point is south of where you are.
⑨Now you can turn the map, like you did before, and find which way you should be traveling.
To find the direction, we ought to be patient probably because ________.
A. it is not easy to find a proper stick
B. it is not easy to position the stick
C. it takes hours to make the marks
D. it takes about half an hour to make the marks
The passage would probably be most helpful to ________.
A. those who draw maps
B. those who get lost
C. those who make compasses
D. those who do experiments
Which of the following pictures best shows the way of finding the direction of south?
The author presents this passage by ________.
A. telling an interesting story
B. describing an activity in a lively way
C. testing an idea by reasoning
D. introducing a practical method
查看习题详情和答案>>Find which Direction Is South
Do you have a good sense of direction？If not，please take with you a compass. But if you forget to take a compass , you can still find your way.
It's never a good idea to imagine that the family member who was entrusted(委托〕with the job of map reading actually knows where the family is. You can tell by the "slightly confused look on their face that nothing on the ground seems to match the map. Never mind. The sun is shining and it’s still morning. If you don't know the exact time，you can still find out where south is，but you'll need to be patient.
①Find a straight stick and put it in the ground in a place where you can mark its shadow.
②Try to position the stick as vertically(垂直)as you can. You can check this by making a simple plumb line（铅锤线）with a piece of string（绳子） and weigh. You haven't got any string? Ok, use a thread from your clothes with a button tied at the end to act as a weight.
③Mark the end of the shadow cast by the stick.
④Wait approximately half an hour and mark the end of the shadow again.
⑤Keep doing this until you have made several marks.
⑥The mark nearest the stick will represent the shortest shadow, which is cast at midday, when the sun is highest in the sky and pointing to the exact south.
⑦Pick a point in the distance along the line between the shortest shadow and the stick.
⑧That point is south of where you are.
⑨Now you can turn the map, like you did before, and find which way you should be traveling.
1.To find the direction, we ought to be patient probably because ________.
A. it is not easy to find a proper stick
B. it is not easy to position the stick
C. it takes hours to make the marks
D. it takes about half an hour to make the marks
2.The passage would probably be most helpful to ________.
A. those who draw maps
B. those who get lost
C. those who make compasses
D. those who do experiments
3.Which of the following pictures best shows the way of finding the direction of south?
4.The author presents this passage by ________.
A. telling an interesting story
B. describing an activity in a lively way
C. testing an idea by reasoning
D. introducing a practical method
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Peter Fern was crazy about mountains. Climbing was the 1 of his life. Church towers，seaside cliffs, rock faces, ice mountains，anything “If it is there” , he used to say, “then I want to climb it.”
So the news of his marriage gave me a 2 . I’d never known him to take much interest in 3 . Well，Peter Fern a married man! I couldn't 4 it. I 5 whether his wife would try to stop some of his risky 6 .
She was French perhaps--from that place 7 he usually spent his holidays. Chamonix，wasn’t it? From Chamonix he'd climbed Mount Blanc on his seventeenth birthday, and another one the day after! That was it, then: She was French，from a mountaineering family. No 8 . No other explanation.
A month later I met them 9 in town. Anna surprised me—because she was English. She was a dancer in the 10．
“I have 11 climbed more than sixty steps in my life,” she told me. “Peter has his 12 , and I’ve got mine. No 13 ”. “None at all，”Peter said, smiling. “Where did you spend your 14 ?” I asked．Somewhere far 15 theatres and mountains，was it? “We had a week's holiday,” Anna said, “I flew to New York to see Dirke Dancers on Broadway. A wonderful 16 !” Peter said, “I didn’t want to 17 the good weather. So I went to Switzerland and climbed the north 18 of the Eiger with Allen Dunlop. Great 19 , the Eiger. Grand place for a honeymoon! I’ll show you the 20 we took one day.”
1． A．purpose B．love C．answer D．even
2． A．joy B．thought C．lesson D．shock
3． A．mountains B．churches C．faces D．girls
4． A．accept B．understand C．bear D．tell
5． A．believed B．knew C．wondered D．realized
6． A．jobs B．words C．adventures D．deeds
7． A．where B．when C．which D．how
8． A．one B．reason C．sign D．doubt
9． A．all B．two C．both D．double
10．A．family B．mountain C．theatre D．holiday
11．A．ever B．even C．never D．almost
12．A．interests B．life C．room D．car
13．A．wonder B．way C．time D．problems
14．A．days B．honeymoon C．childhood D．rest of life
15．A．away B．as C．by D．from
16．A．show B．sight C．scene D．game
17．A．miss B．escape C．break D．forget
18．A．position B．face C．point D．line
19．A．programme B．progress C．fun D．invention
20．A．photographs B．roles C．sports D．pains
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