题目内容
（请给出正确答案）
NASA releases unique shots of space shuttle and space station.
A．opposes
B．publicizes
C．prompts
D．offends
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“NASA releases unique shots of space shuttle and space station.A．opposesB．publicizesC．promp”相关的问题
Part A
Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)
The Federal Communications Commission is not alone in worrying about television stations that air corporate advertisements masquerading as news stories. In fact, the FCC requires that broadcast stations disclose the corporate backers of "video news releases" or face a maximum fine of $32,500 for each violation. Enough violations and a station could lose its license. The FCC sets out a clear policy: All outside news reporting must be identified, disclosing the source of any video news release aired on a news program.
There are occasional declines. A nonprofit consumer watchdog group reported to the FCC that 77 stations broadcast video features about products from 49 companies without pointing out that they were produced by public relations firms representing these corporations. Public relations firms have one goal: to make their video news releases look as if they are legitimate news reports, not propaganda.
However, PR-produced video news releases merely are the tip of the iceberg. Ever since newspapers began, special-interest groups have tried to influence the quality and quantity of the news printed. Often, in exchange for advertising revenue, newspapers would print glowing stories of their sponsors and suppress any news that might hurt their heavy advertisers. Those without the ability to inform. the press, either through news releases or contacts usually are ignored unless they commit a crime or act in attention-getting ways.
For most of the 20th century, women and people of color found it almost impossible to break the special-interest news barriers. Their stories were ignored unless there was a sensational or unique element. Usually, though, items concerning these minorities required an enormous wrongdoing, such as the murder of someone in the white community or some attack on the status quo that threatened the peace and quiet, as well as the productivity, of a neighborhood.
There have been splendid exceptions, but not many. One reason the Hispanic news media has been so successful is that it caters to its audience in the same manner all media does. While its bias may seem different, it actually is the same bias all media has: an overwhelming concern to keep its supporters happy. So, while the hue and cry over PR-created video news releases are well and good, they really do not attack the problem of biased news, and appeals to a specific group that shares the same prejudices and concerns about the present and future.
All of this is one key reason Americans so often are surprised when the news outlets are forced to report stories that do not please advertisers or consumers. Better to continue, when possible, a steady supply of news about the latest celebrity baby or yet another piece about sex offenders or restaurant health violations.
Television stations in the U.S. are NOT allowed to broadcast programs of ______
A．advertisement videos that can be easily recognized by audience as promotions.
B．reports on crimes committed by colored people.
C．news releases to help with the product distribution of its sponsor.
D．stories on successes of minorities.
Part A
Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)
A tiny but powerful new lightweight drill has been developed by space scientists and engineers. It expands the fields in which drilling has been difficult in the past. The new drill could be used in the drilling required during surgical or diagnostic procedures involving bones, or when extracting heart pacemaker leads. Future space missions could include drilling for rock and soil samples, using only lightweight landing vehicles with robotic arms.
The color photo shows the new driller penetrating a sandstone while the drill is held only from its power cord. Relatively small vertical force is used in this application—a factor that will be useful when the drill is used in future space missions and weight needs to be kept to a minimum. The drill is driven by piezoelectric devices, which have only two moving parts but no gears or motors. Piezoelectrics are materials that change their shape under the application of an electrical field. The drill can be adapted easily to operations in a range of temperatures from extremely cold to very hot. Unlike conventional rotary drills, the drill can drill even the hardest rocks without significant weight on the drilling bit.
"The drill is a device that offers exciting new capabilities for space exploration in future NASA missions," said Dr. Yoseph Bar-Cohen, who leads NASA's Jet Propulsion laboratory's Nondestructive Evaluation and Advanced Actuator Technologies unit. "Besides the immediate benefits of the technology to NASA, it is paving the way for other unique mechanisms that are being developed in our laboratory and elsewhere," he said.
The demonstration unit pictured in the color photograph weighs about 0.7 kilograms, which is sufficient to drill 12 millimeter diameter holes in rocks using less than 10 watts of power. Comparable rotary drills usually require the application of 20 to 30 times greater pushing force and more than three times the power.
Other advantages to the drill are no drill noise and no drill movement across the surface on start-up. The drill body will not rotate, the speed does not decrease with time and the bit does not require sharpening. The bit can be guided by hand safely during operation. The drill can drill holes in different cross-sections, such as square and round.
Said Dr. Yoseph Bar-Cohen, "Thanks to the development of technology associated with this drill, new devices can be made to be small and lightweight, to consume little power and to exhibit a high standard of reliability."
At first, the new lightweight drill has been invented to
A．be used in space missions.
B．pull out the heart pacemaker leads.
C．replace the conventional rotary drill.
D．drill the bones during procedures of medical treatment.
Which ofthe following materials typically releases the least amount offluoride()
A．Composite
B．Compomer
C．Glass-ionomer
D．Resin-modified glass ionomer
It is a process during ______ the body releases water to cool the skin.
A. when
B. which
C. where
D. that
A.outdated
B.keeps
C.releases
D.updates
A．every
B．more
C．those
D．few
警告：系统检测到您的账号存在安全风险
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
