单选题Foreign movies won' t be dubbed into major language when ______.
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To understand how astrology works, we
should first take a quick look at the sky. Although the stars are at enormous
distances, they do indeed give the impression of being affixed to the inner
surface of a great hollow sphere surrounding the earth. Ancient people, in fact,
literally believed in the existence of such a celestial sphere. As the earth
spins on its axis, the celestial sphere appears to turn about us each day,
pivoting at points on a line with the earth’s axis of rotation. This daily
turning of the sphere carries the stars around the sky, causing most of them to
rise and set, but they, and constellations they define, maintain fixed patterns
on the sphere, just as the continent of Australia maintains its shape on a
spinning globe of the earth. Thus the stars were called fixed stars.
The motion of the sun along the ecliptic is, of course, merely a
reflection of the revolution of the earth around the sun, but the ancients
believed the earth was fixed and the sun had an independent motion of its own,
eastward among the stars. The glare of sunlight hides the stars in daytime, but
the ancients were aware that the stars were up there even at night, and the slow
eastward motion of the sun around the sky, at the rate of about thirty degrees
each month, caused different stars to be visible at night at different times of
the year. The moon, revolving around the earth each month, also
has an independent motion in the sky. The moon, however changes it position
relatively rapidly. Although it appears to rise and Set each day, as does nearly
everything else in the sky, we can see the moon changing position during as
short an interval as an hour or so. The moon’s path around the earth lies nearly
in the same plane as the earth’s path around the sun, so the moon is never seen
very far from the ecliptic in the sky. There are five other objects visible to
the naked eye that also appear to move in respect to the fixed background of
stars on the celestial sphere. These are the planets Mercury, Venus, Mars,
Jupiter, and Saturn. All of them revolve around the sun in nearly the same plane
as the earth does. So they, like the moon, always appear near the ecliptic.
Because we see the planets from the moving earth, however, they behave in a
complicated way, with their apparent motions on the celestial sphere reflecting
both their own independent motions around the sun and our motion as
well.
单选题The author is obviously critical of President Clinton for
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单选题The first big-name hackers include Steve Wozniak, Bill Gates and Linus Torvalds, all now highly recognizable names behind many of the computer technologies used today. These early hackers had a love of technology and a compelling need to know how it all worked, and their goal was to push programs beyond what they were designed to do. Back then, the word "hacker" didn’t have the negative connotation it has today. The original hacker ethic, rooted out of simple curiosity and a need to be challenged, appears to be dead. The objectives of early hackers are a far cry from the goals of today's hacker. The motivation of the new breed of hackers appears not to be curiosity, or a hunger for knowledge, as it used to be. Instead, most of today's hackers are driven by greed, power, revenge, or some other malicious intent, treating hacking as a game or sport, employing the tools that are readily available via the Internet. The rate of security attacks is actually outpacing the growth of the Internet. This means that something besides the growth of the Internet is driving the rise in security attacks. Here are some realities you should know about: Operating systems and applications will never be secure. New vulnerabilities will be introduced into your environment every day. And even if you ever do get one operating system secure, there will be new operating systems with new vulnerabilities—phones, wireless devices, and network appliances. Employees will never keep up with security polices and awareness. It doesn't matter how much you train and educate your employees. If your employees disregard warnings about the hazards of opening questionable email attachments, how are you going to educate them about properly configuring firewalls and intrusion detection systems for their PCs? Managers have more responsibility than ever. And on top of the realities listed above, security managers are being asked to support increasing degrees of network availability and access. There are some good security measures you can take: Employ a layer 7, full-inspection firewall. Automatically update your anti-virus at the gateway, server and client. Keep all of your systems and applications updated. Hackers commonly break into a Web site through known security holes, so make sure your servers and applications are patched and up to date. Turn off unnecessary network services. Eliminate all unneeded programs. Scan network for common backdoor services--Use intrusion detection systems, vulnerability scans, anti virus protection.
单选题Individuals and businesses have legal protection for intellectual property they create and own. Intellectual proper (1) from creative thinking and may include products, (2) processes, and ideas. Intellectual property is protected (4) misappropriation. Misappropriation is taking the Intellectual property of others without (4) compensation and using it for monetary gain. Legal protection is provided for the (5) of intellectual property. The three common types of legal protection are patents, copyrights, and trademarks. Patents provide exclusive use of inventions. If the U.S. Patent office (6) a patent, it is confirming that the intellectual property is (7) . The patent prevents others from making, using, or selling the invention without the owner's (8) for a period of 20 years. Copyrights are similar to patents (9) that they are applied to artistic works. A copyright protects the creator of an (10) artistic or intellectual work, such as a song or a novel. A copyright gives the owner exclusive rights to copy, (11) , display, or perform the work. The copyright prevents others from using and selling the work, the (12) of a copyright is typically the lifetime of the author (13) an additional 70 years. Trademarks are words, names, or symbols that identify the manufacturer of a product and (14) it from similar others. A service mark is similar to a trademark (15) is used to identify services. A trademark prevents others from using the (16) or a similar word, name, or symbol to take advantage of the recognition and (17) of the brand or to create confusion in the marketplace. (18) registration, a trademark is usually granted for a period often years. It can be (19) for additional ten-year periods indefinitely as (20) as the mark's use continues.
单选题A conventional teacher's licensee usually requires a university degree in education plus an unpaid term of practice teaching. This has never made much sense. It excludes bright students who take degrees in other subjects, and might teach those subjects; it is costly and time-consuming for career-switchers, who must wait a year or more before they can enter a classroom; it is so rigid that private-school teachers or university professors with years of experience have to jump through hoops before they can start teaching in a state school. And there is virtually no evidence that it creates better teachers. For all that, it is strongly backed by schools of education, which have a monopoly of teacher-training, and by teachers' unions, whose members make more money when it is artificially hard for others to get into the profession. Now, some 45 states and the Districts of Columbia offer an "alternative route" to a teacher's licensee, up from only a handful in the 1980s. Alternative certification (AC) generally allows individuals with a university degree to begin teaching immediately after passing an entrance examination. These recruits, watched over by a mentor teach the subject they studied at university, and take education courses at a sponsoring university while drawing their salaries. The traditional sort of American teacher is likely to be young, white and female. Alternative certification attracts more men and more non-whites. In Texas, for instance, roughly 90% of public-school teachers are white, but 40% of those who have joined through alternative certification are non-whites. The AC route also draws teachers willing to go where they are most needed. A survey of Troops to Teachers, a program that turns exsoldiers into public-school teachers (" Proud to serve again"), found that 39% of those taking part are willing to teach in inner-city schools, and 68% in rural areas. Are they good teachers? Officialdom is reluctant to release the details which might answer that question for certain. But anecdotal evidence suggests they do well. In New Jersey, which has been running this sort of program since 1984, rich districts, which can afford to be choosy, consistently hire more AC teachers than poor districts do. In Houston, Texas, where the Teach of America program (TFA) puts recent university graduates into poor communities as teachers, the most effective teachers are generally the TFA ones. " School principals are our biggest fans," Wendy Kopp, TFA's president, says proudly. So why not scrap the cumbersome teacher-licensing laws? Frederick Hess, a professor at the University of Virginia, has written a paper for the Progressive Policy Institute arguing that teacher-licensing ought to be stripped to the bare essentials. Prospective teachers should be required only to hold a college degree, pass a test of essential skills, and be checked to make sure they do not have a criminal background. Other training is important, argues Mr. Hess, but the market, not state legislators, should decide what that training looks like. This notion of "competitive certification" has drawn favorable attention from the Bush administration.
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单选题In paragraph one, the phrase "hang back" stands for" ______ ".
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The media can impact current events. As
a graduate student at Berkeley in the 1960s,I remember experiencing the events
related to the People's Park that were occurring on campus. Some of these events
were given national media coverage in the press and on TV. I found it
interesting to compare my impressions of what was going on with perceptions
obtained from the news media. I could begin to see events of that time feed on
news coverage. This also provided me with some healthy insights into the
distinctions between these realities. Electronic media are
having a greater impact on the people's lives every day. People gather more and
more of their impressions from representations. Television and telephone
communications are linking people to a global village, or what one writer calls
the electronic city. Consider the information that television brings into your
home every day. Consider also the contract you have with others simply by using
telephone. These media extend your consciousness and your contact. For example,
the video coverage of the 1989 San Francisco earthquake focused on "live action"
such as the fires or the rescue efforts. This gave the viewer the impression of
total disaster. Television coverage of the Iraqi War also developed an
immediacy. CNN reported events as they happened. This coverage was distributed
worldwide. Although most people were far away from these events, they developed
some perception of these realities. In 1992, many people watched
in horror as riots broke out on a sad Wednesday evening in Los Angeles,
seemingly fed by video coverage from helicopters. This event was triggered by
the verdict in the Rodney King beating. We are now in an age where the public
can have access to information that enables it to make its own judgements, and
most people, who had seen the video of this beating, could not understand how
the jury was able to acquit the policemen involved. Media coverage of events as
they occur also provides powerful feedback that influences events. This can have
harmful results, as it seemed on that Wednesday night in Los Angeles. By Friday
night the public got to see Rodney King on television pleading, "Can we all get
along?" By Saturday, television seemed to provide positive feedback as the Los
Angeles riot turned out into a rally for peace. The television showed thousands
of people marching with banners and cleaning tools. Because of that, many more
people turned out to join the peaceful event they saw unfolding on television.
The real healing, of course, will take much longer, but electronic media will
continue to be a part of that process.
单选题The author begins his article with George Bush's father's words
单选题The passage functions as an
单选题What does the author mean by saying the "recent discoveries are modest"?
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单选题According to the author, what is one example of our loss of morality?
单选题What is the best title of this passage?______
单选题The word "tunnel-visioned" most probably means ______.
单选题Which of the following is the most desirable site where cosmic neutrinos can be easily detected?
单选题Which of the following is NOT TRUE according to the text?
