A blind baby is doubly handicapped. Not only is it unable to see, but because it cannot receive the visual stimulus（刺激）from its environment that a sighted child does, it is likely to be slow in intellectual development. Now the ten-month old son of Dr. and Mrs. Dennis Daughters is the subject of an unusual psychological experiment designed to prevent a lag（滞后）in the learning process. With the aid of a sonar-type electronic that he wears on his head, infant(婴儿) Dennis is learning to identify the people and objects in the world around him by means of echoes(回声).

The device is an improvement of the “Sonicguide”, an instrument produced by Telesensory Systems, Inc., of Palo Alto, Calif, and used by blind adults in addition to a smart or guide dog. As adapted for Dennis, it consists of a battery-powered system about the size of a half dollar that is on a headgear. A transmitter sends out an ultrasonic(超声的) pulse that creates an 80 degree cone of sound at 6 feet. Echoes from objects within the cone are perceived (felt) as sounds that vary in pitch(音调) and volume(音量) with the size and distance of the object.

The closer an object is, the lower the pitch, and the larger the object, the louder the signal. Hard surfaces produce a sharp ping, while soft ones send back signals with a slightly fuzzy quality. An object slightly to the right of Denny’s sends back a louder sound to his right ear than to the left. Thus , by simply moving his head right and left and up and down, he can not only locate an object but also get some notion of its shape and size, thanks to the varying qualities of sounds reaching his ears as the cone of ultrasound(超声波) passes its edges. Dennis likes to use the device to play a kind of peek-a-boo with his mother. Standing on her knee and facing her directly, he receives a strong signal in both ears. By turning his head away, he makes her seem to disappear. “From the first time he wore it,” says Mrs. Daughters, “it was like a light going on in his head.”

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(声纳) device with somewhat the same sensitivity as Dennis’s for use by school-age children.

66. Dr. and Mrs. Daughters’ research is directed to ______________.

A. 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

67. Infant Dennis becomes the subject of the experiment most probably because _____________.

A. 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 sonar-type electronic device

68. What can we learn about infant Dennis’ device?

A. Its the first design was designed for blind adults.    B. Its battery is as small as a half-dollar coin.

C. It is functionally similar to a sane and guide dog.    D. It has been improved by Telesensory Systems, Inc.

69. In the third paragraph, “its edge” refers to ___________ .

A. the edge of an object                                B. the edge of the device

C. the boundary of Dennis’ movement                    D. the boundary of the sound pitch.

70. What is Telesensory Systems, Inc. most likely to think about infant Dennis’ device?

A. It had better be used by blind children from school age.

B. It needs improving for use in a complicated environment.

C. It may not be so suitable for the blind adults.

D. It benefits blind children in terms of learning.

_________ his work , he can’t play with his friends.

He _______ cards with his friends, but now he _______ a walk after supper.

1. A.
   used to play; is used to having
2. B.
   is used to playing, used to have
3. C.
   used to play; is used to have
4. D.
   is used to playing; is used to have

Michael’s new house is like a huge palace,           with his old one.  

A. comparing    B. compares   C. to compare   D. compared  

James’s New Bicycle　

James shook his money box again. Nothing! He carefully __1__ the coins that lay on the bed. $24.52 was all that he had. The bicycle he wanted was at least $90! __2__ on earth was he going to get the __3_ of the money?　

He knew that his friends all had bicycles. It was __4__ to hang around with people when you were the only one without wheels. He thought about what he could do. There was no __5__ asking his parents, for he knew they had no money to __6__.　

There was only one way to get money, and that was to __7__ it. He would have to find a job. __8__ who would hire him and what could he do? He decided to ask Mr. Clay for advice, who usually had __9__ on most things.　

“Well, you can start right here,” said Mr. Clay. “My windows need cleaning and my car needs washing.”　

That was the _10__ of James’s odd-job（零工） business. For three months he worked every day after finishing his homework. He was amazed by the __11__ of jobs that people found for him to do. He took dogs and babies for walks, cleared out cupboards, and mended books. He lost count of the __12__ of cars he washed and windows he cleaned, but the __13__ increased and he knew that he would soon have __14__ for the bicycle he longed for.　

The day __15__ came when James counted his money and found $94.32. He __16__ no time and went down to the shop to pick up the bicycle he wanted. He rode __17__ home, looking forward to showing his new bicycle to his friends. It had been hard __18__ for the money, but James knew that he valued his bicycle far more __19__ he had bought it with his own money. He had __20__what he thought was impossible, and that was worth even more than the bicycle.　

难易度：难

1. A. cleaned　　　 B. covered　　 C. counted　　　　 D. checked　

2. A. How　 B. Why　 C. Who　 D. What　

3. A. amount　 B. part　 C. sum　 D. rest　

4. A. brave　 B. hard　 C. smart D. unfair　

5. A. point B. reason　 C. result　 D. right　

6. A. split　 B. spend　 C. spare　 D. save　

7. A. borrow B. earn　 C. raise　 D. collect　

8. A. Or　 B. So　 C. For　 D. But　

9 A. decisions B. experience 　C. opinions D. knowledge　

10. A. beginning B. introduction　 C. requirement　 D. opening　

11. A. similarity B. quality　 C. suitability　 D. variety　

12. A. brand　 B. number C. size　 D. type　

13. A. effort　 B. pressure C. money D. trouble　

14. A. all　 B. enough　 C. much　 D. some　

15. A. finally B. instantly C. normally D. regularly　

16. A. gave　 B. left　 C. took　 D. wasted　

17. A. patiently B. proudly　 C. silently　 D. tiredly　

18. A. applying　 B. asking　 C. looking　 D. working　

19. A. since B. if　 C. than　 D. though　

20. A. deserved B. benefited C. achieved D. learned