考博易错题（2019/6/19）_网考网(Netkao.com)

考博易错题（2019/6/19）

第1题：Sound moves from its source to the ear by wave like fluctuations in air pressure, something like the peaks and troughs or the lowest point of ocean waves. One way to keep from hearing sound is to use ear plugs.Another way is to cancel out the sound with anti-sounD、
Using a noise maker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted--each peak is matched to a trough, and vice vers
A、Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the highest and lowest points of the noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces anti-sound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti-sound just enough to cause complete silence.
The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.
The microprocessor described in the passage will probably be used for ______.
A、composing music
B．repairing alarm systems
C．eliminating engine noises
D．intensifying fog warning sounds

【单选题】： A B C D

After yuppies and dinkies, a new creature from adland stalks the block. The NYLON, an acronym linking New York and London, is a refinement of those more familiar categories such as jet- setters and cosmocrats (cosmopolitan aristocrats...do keep up). Marketing professionals have noted that{{U}} 1 {{/U}}the demise ofConcorde, a new class of high-earner increasingly{{U}} 2 {{/U}}his or her time shuttling{{U}} 3 {{/U}}the twin capitals of globalization.And NYLONS prefer their home comforts{{U}} 4 {{/U}}tap in both cities.Despite the impressive{{U}}
5 {{/U}}of air miles, they are not adventurous people.
As{{U}} 6 {{/U}}from Tom Wolfe’s Masters of the Universe of the 1980s, NYLONS have done more than well
{{U}} 7 {{/U}}the long boom and new economy of the last ten years. They areDJs, chefs, games designers, Internet entrepreneurs, fashionistas, publishers and even a(n){{U}} 8 {{/U}}band of journalists and writers. They are self-consciously trendy and some are even able to{{U}} 9 {{/U}}houses in both cities. Others will put up{{U}} 10 {{/U}}a house in one, and a view{{U}} 11 {{/U}}a room in the{{U}} 12 {{/U}}. of course, their horizons do{{U}} 13 {{/U}}beyond just New York and London. For many, LosAngeles is an important shopping mall.
More significantly for adland, NYLONS provide some useful marketing savings.Campaigns no longer have to differ very much in the two cities,{{U}} 14 {{/U}} NYLONS bring them ever closer together. The restaurants are the same, with Nobu now in London andConran in New York. Many plays{{U}} 15 {{/U}}in both cities at the same time, andDJs shuttle between the two,{{U}} 16 {{/U}}the same garage to the same people in{{U}} 17 {{/U}}clubs. Time Out and Wallpaper are the magazines of{{U}} 18 {{/U}}.All this is fine for NYLONS.But not so much
{{U}} 19 {{/U}}for everybody else watching Notting Hill turn{{U}} 20 {{/U}}a pale imitation of Greenwich Village.

第2题：
In this part you are asked to choose the best word for each blank in the passage. Write your answers on the answer sheet.

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