2023年甘肃GRE考试考前冲刺卷（8）.docx

《2023年甘肃GRE考试考前冲刺卷（8）.docx》由会员分享，可在线阅读，更多相关《2023年甘肃GRE考试考前冲刺卷（8）.docx（41页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、2023年甘肃GRE考试考前冲刺卷（8）本卷共分为2大题50小题，作答时间为180分钟，总分100分，60分及格。一、单项选择题（共28题，每题2分。每题的备选项中，只有一个最符合题意） 1.Thigh, robot People who have suffered debilitating strokes often have to cope with impaired muscles that do not work properly. Even a simple act such as standing up from a chair and walking a few steps ca

2、n become extremely difficult. Stroke victims often have to rely on wheelchairs, sticks, walking frames and other orthotic devices to move about. But a new generation of active orthotic devices, capable of augmenting or replacing lost muscle function, is in the works. These devices use an assortment

3、of complex computer and mechanical technology, borrowed from the field of robotics, to help patients get around. They are being made possible by the falling prices and improving performance of sensors, computer control systems and battery technology. As well as benefiting elderly patients with perma

4、nent paralysis or muscle dysfunction, such devices could also help people in recovering from arthroscopic (literally, looking within the joint) operations. Around 850,000 arthroscopic and knee replacement operations are carried out each year in America alone, and patients require an average of six w

5、eeks of rehabilitation before they are fully mobile again. Active orthotic devices could get them back on their feet sooner. Designing such devices presents a number of challenges. The biggest problem is providing enough power to assist the wearer, without making the device too bulky and heavy. Anot

6、her challenge is devising a responsive and unobtrusive control system that can take readings from several sensors and automatically respond to the wearers motion by making appropriate movements. Several start-ups are, however, rising to the challenge and readying products for market. Among the firms

7、 developing active orthotic devices is Tibion, based in Moffett Field, California. It has developed the PowerKnee, a medical device that augments muscle strength in the quadriceps to help the wearer stand, walk and climb stairs. The device is based on recent advances in portable computing, embedded

8、systems, prosthetics and materials, and Tibion expects it to be submitted for regulatory approval next year. Americas space agency, NASA, has expressed interest in it, since muscleaugmentation systems might enable astronauts to work in space for longer without getting tired. Another company working

9、in this area is Yobotics, based in Boston, Massachusetts, which has developed a powered device called the RoboKnee. It allows a healthy wearer to perform deep knee bends indefinitely or, at least, until the batteries run out. This is intended to be a first step towards the development of a far more

10、elaborate exoskeleton device, the RoboWalker, which will augment or replace the muscular functions of the lower body. Also working on active orthotic devices is Hugh Herr of the Massachusetts Institute of Technology (MIT). His team has designed an ankle brace to assist people with drop foot, who are

11、 unable to lift their feet normally when walking, because of weakened or damaged muscles around the ankle. The battery-powered device, which uses a motor to help raise and lower the front of the foot as the heel strikes the ground and lifts again, is about to begin testing on patients. Also at MIT,

12、Woodie Flowers, a mechanical engineer, is developing an active joint brace that is designed to function like an active exoskeleton. Perhaps the best-known example of such a device is the exoskeleton seen in the film Aliens, which allows the wearer to move heavy objects around, rather like a fork-lif

13、t truck. This kind of technology may not, it seems, remain in the realm of science fiction for much longer.ATrueBFalseCNOT GIVEN 2.Thigh, robot People who have suffered debilitating strokes often have to cope with impaired muscles that do not work properly. Even a simple act such as standing up from

14、 a chair and walking a few steps can become extremely difficult. Stroke victims often have to rely on wheelchairs, sticks, walking frames and other orthotic devices to move about. But a new generation of active orthotic devices, capable of augmenting or replacing lost muscle function, is in the work

15、s. These devices use an assortment of complex computer and mechanical technology, borrowed from the field of robotics, to help patients get around. They are being made possible by the falling prices and improving performance of sensors, computer control systems and battery technology. As well as ben

16、efiting elderly patients with permanent paralysis or muscle dysfunction, such devices could also help people in recovering from arthroscopic (literally, looking within the joint) operations. Around 850,000 arthroscopic and knee replacement operations are carried out each year in America alone, and p

17、atients require an average of six weeks of rehabilitation before they are fully mobile again. Active orthotic devices could get them back on their feet sooner. Designing such devices presents a number of challenges. The biggest problem is providing enough power to assist the wearer, without making t

18、he device too bulky and heavy. Another challenge is devising a responsive and unobtrusive control system that can take readings from several sensors and automatically respond to the wearers motion by making appropriate movements. Several start-ups are, however, rising to the challenge and readying p

19、roducts for market. Among the firms developing active orthotic devices is Tibion, based in Moffett Field, California. It has developed the PowerKnee, a medical device that augments muscle strength in the quadriceps to help the wearer stand, walk and climb stairs. The device is based on recent advanc

20、es in portable computing, embedded systems, prosthetics and materials, and Tibion expects it to be submitted for regulatory approval next year. Americas space agency, NASA, has expressed interest in it, since muscleaugmentation systems might enable astronauts to work in space for longer without gett

21、ing tired. Another company working in this area is Yobotics, based in Boston, Massachusetts, which has developed a powered device called the RoboKnee. It allows a healthy wearer to perform deep knee bends indefinitely or, at least, until the batteries run out. This is intended to be a first step tow

22、ards the development of a far more elaborate exoskeleton device, the RoboWalker, which will augment or replace the muscular functions of the lower body. Also working on active orthotic devices is Hugh Herr of the Massachusetts Institute of Technology (MIT). His team has designed an ankle brace to as

23、sist people with drop foot, who are unable to lift their feet normally when walking, because of weakened or damaged muscles around the ankle. The battery-powered device, which uses a motor to help raise and lower the front of the foot as the heel strikes the ground and lifts again, is about to begin

24、 testing on patients. Also at MIT, Woodie Flowers, a mechanical engineer, is developing an active joint brace that is designed to function like an active exoskeleton. Perhaps the best-known example of such a device is the exoskeleton seen in the film Aliens, which allows the wearer to move heavy obj

25、ects around, rather like a fork-lift truck. This kind of technology may not, it seems, remain in the realm of science fiction for much longer.ATrueBFalseCNOT GIVEN 3.Thigh, robot People who have suffered debilitating strokes often have to cope with impaired muscles that do not work properly. Even a

26、simple act such as standing up from a chair and walking a few steps can become extremely difficult. Stroke victims often have to rely on wheelchairs, sticks, walking frames and other orthotic devices to move about. But a new generation of active orthotic devices, capable of augmenting or replacing l

27、ost muscle function, is in the works. These devices use an assortment of complex computer and mechanical technology, borrowed from the field of robotics, to help patients get around. They are being made possible by the falling prices and improving performance of sensors, computer control systems and

28、 battery technology. As well as benefiting elderly patients with permanent paralysis or muscle dysfunction, such devices could also help people in recovering from arthroscopic (literally, looking within the joint) operations. Around 850,000 arthroscopic and knee replacement operations are carried ou

29、t each year in America alone, and patients require an average of six weeks of rehabilitation before they are fully mobile again. Active orthotic devices could get them back on their feet sooner. Designing such devices presents a number of challenges. The biggest problem is providing enough power to

30、assist the wearer, without making the device too bulky and heavy. Another challenge is devising a responsive and unobtrusive control system that can take readings from several sensors and automatically respond to the wearers motion by making appropriate movements. Several start-ups are, however, ris

31、ing to the challenge and readying products for market. Among the firms developing active orthotic devices is Tibion, based in Moffett Field, California. It has developed the PowerKnee, a medical device that augments muscle strength in the quadriceps to help the wearer stand, walk and climb stairs. T

32、he device is based on recent advances in portable computing, embedded systems, prosthetics and materials, and Tibion expects it to be submitted for regulatory approval next year. Americas space agency, NASA, has expressed interest in it, since muscleaugmentation systems might enable astronauts to wo

33、rk in space for longer without getting tired. Another company working in this area is Yobotics, based in Boston, Massachusetts, which has developed a powered device called the RoboKnee. It allows a healthy wearer to perform deep knee bends indefinitely or, at least, until the batteries run out. This

34、 is intended to be a first step towards the development of a far more elaborate exoskeleton device, the RoboWalker, which will augment or replace the muscular functions of the lower body. Also working on active orthotic devices is Hugh Herr of the Massachusetts Institute of Technology (MIT). His tea

35、m has designed an ankle brace to assist people with drop foot, who are unable to lift their feet normally when walking, because of weakened or damaged muscles around the ankle. The battery-powered device, which uses a motor to help raise and lower the front of the foot as the heel strikes the ground

36、 and lifts again, is about to begin testing on patients. Also at MIT, Woodie Flowers, a mechanical engineer, is developing an active joint brace that is designed to function like an active exoskeleton. Perhaps the best-known example of such a device is the exoskeleton seen in the film Aliens, which

37、allows the wearer to move heavy objects around, rather like a fork-lift truck. This kind of technology may not, it seems, remain in the realm of science fiction for much longer.ATrueBFalseCNOT GIVEN 4.The medias depiction of America as a drug-ridden society is not only_, but leads to bad policy, for

38、 the tendency of some leaders to conflate both innocuous and serious drug abuse into_and dreadful statistic is often motivated by nothing more than paranoia.A(A) contemptuous an accurateB(B) dishonest a secretC(C) resilient a realisticD(D) inaccurate a singleE(E) remorseful a unified 5.According to

39、the passage, the optical anatomy of Bythograea thermydrons acquires which of the following features as it grows from larva to an adult . A higher sensitivity to longer wavelengths of light . An enhanced ability to form images . A greater range of spectral absorbanceA(A) onlyB(B) onlyC(C) and onlyD(D

40、) and onlyE(E) , and 6.The discoveries of the social sciences, once isolated and labeled, are_conventional wisdom, whereupon they_their distinctiveness as scientific advances, being for this reason less likely than other intellectual enterprises to establish unique identities.A(A) rejected by establ

41、ishB(B) confirmed by consolidateC(C) disproved by displayD(D) incorporated into loseE(E) absorbed by gain 7.The passage suggests which of the following about Dorothy Allisons work . Non-feminist writers have been less successful in producing historically situated narratives. . Allisons fiction succe

42、ssfully negotiates between essentialist arrogance and a reactionary response. . Allison is more interested in her female antagonists than male protagonists, as characters.A(A) onlyB(B) onlyC(C) and onlyD(D) and onlyE(E) , and 8.Politicians, activists and parents owe it to their children to_education

43、al opportunity, whether that means confronting school boards to_ better-trained teachers, forming charter schools, or going to court to ensure equality of funding for schools in poor areas.A(A) appraise interestB(B) increase replenishC(C) investigate discoverD(D) question impugnE(E) equalize demand

44、9.At the time during year X when the difference between the price of ABC common stock and the price of XYZ common stock was at its greatest, the price of XYZ common stock was approximately what percent of the price of XYZ common stock and ABC common stock combinedA. 16% B. 30% C. 36% D. 42% E. 103%1

45、0.A certain five-member committee must be assembled from a pool of five women - A. B, C, D and E, and three men- X, Y, and Z, what is the probability that the committee will incIude B, C, E, Y and Z 11.At the time during year X when the aggregate price of ABC and XYZ stock was the greatest, the pric

46、e of ABC stock was approximately what percent of the price of XYZ stockA. 25 B. 60 C. 70 D. 140E. 17012.Two competitors battle each other in each match of a tournament with nine participants. What is the minimum number of matches that must occur for every competitor to battle every other competitorA

47、. 27 B. 36 C. 45D. 64E. 8113.As two wheels-A and B-roll across the ground, they both rotate at a rate of 60 revolutions per second. The radius of wheel A is 3. The radius of wheel B is 1.5. 14. Three carpet pieces in the shapes of a square, a triangle, and a semicircle are attached to one another, as shown in the figure above, to cover the floor of a room. If the area of the square is 144 feet and the perimeter of the triangle is 28 feet, what is the perimeter of the rooms floor, in feetA. 32+12 B. 40+6C. 34+12D. 52+6E. 52+1215.Dan drove home from college at an avera