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In a lab, two routers are connected directly together using serial interfaces in a back-to-back configuration. No external DCE devices are being used. What additional command is needed to bring this link up?（）
A . serialup
B . clock
C . clockrate
D . dcerate
E . dterate
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If all OSPF routers in a single area are configured with the same priority value,what value dose a router use for the ODPF router ID in the absence of a loopback interface?（）
A . the IP address of the first Fast Ethernet interface
B . the IP address of the console management interface
C . the highest IP address among its active interfaces
D . the lowest IP address among its active interfaces
E . the priority value until a loopback interface is configured
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Clients using Cisco-LEAP and EAP-FAST authentication are having no problems logging on to thewireless network， but clients using PEAP are failing to log on. Which situation would result in thistype of problem？（）
A . The AAA server is set to accept both MS-CHAP v2 and GTC for PEAP authentication.
B . Clients have been set to validate the server identity.
C . Posture validation has not been enabled.
D . Clients and server are not using certificates.
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On commonly used ships,if two A√Cgenerators are operated in parallel, the load is distributed evenly by （）.
A . varying the D-Cexciter voltage
B . varying the reluctance of the air gap
C . regulating the speed of prime mover
D . shorting out part of the armature winding
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When latitude and longitude are used，these shall be expressed in（）（and decimals of a minute if necessary），north or south of the Equator and east or west of Greenwich.
A . Fathoms and meters
B . Miles and kilometers
C . Arc and degrees
D . Degrees and minute
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Clients using cisco-leap and eap-fast authentication are having no problems logging on to The wireless network， but clients using peap are failing to log on. Which situation would result in this type of problem？（）
A . posture validation has not been enabled.
B . the aaa server is set to accept both ms-chap v2 and gtc for peap authentication.
C . clients and server are not using certificates.
D . clients have been set to validate the server identity.
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Clients using Cisco-LEAP and EAP-FAST authentication are having no problems logging on to the wirelessnetwork， but clients using PEAP are failing to log on. Which situation would result in this type of problem？（）
A . The AAA server is set to accept both MS-CHAP v2 and GTC for PEAP authentication.
B . Clients have been set to validate the server identity.
C . Posture validation has not been enabled.
D . Clients and server are not using certificates.
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You are running parallel to the coast and take a running fix using bearings of the same object.If you are making less speed than used for the running fix，in relation to the position indicated by the fix，you will be（）.
A . Closer to the coast
B . Farther from the coast
C . On the track line ahead of the fix
D . On the track line behind the fix
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Clients using Cisco-LEAP and EAP-FAST authentication are having no problems logging on to thewireless network， but clients using PEAP are failing to log on. Which situation would result in thistype ofproblem？（）
A . Posture validation has not been enabled
B . The AAA server is set to accept both MS-CHAP v2 and GTC for PEAP authentication
C . Clients and server are not using certificates
D . Clients have been set to validate the server identity
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Clients using Cisco-LEAP and EAP-FAST authentication are having no problems logging on to thewireless network，but clients using PEAP are failing to log on. Which situation would result in thistype ofproblem？（）
A . Posture validation has not been enabled.
B . The AAA server is set to accept both MS-CHAP v2 and GTC for PEAP authentication.
C . Clients and server are not using certificates.
D . Clients have been set to validate the server identity.
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You are running parallel to the coast and estimate that the current is against you.In plotting a running fix using bearings from the same object on the coast，the greatest safety margin from inshore dangers will result if what speed is used to determine（）.
A . Minimum speed estimate
B . Maximum speed estimate
C . Average speed estimate
D . A running fix should not be used under these conditio
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In MLA style, if you are likely to use a dissertation: after the title add Diss. (not italicized or enclosed in quotation marks), the university, and the year.
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Why are people not supposed to use words “No”, or “I don’t know”, as saying “no” in Mexico?
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The examples of the half-squatting, half-kneeling archers in Pit No. 2 are used to illustrate _________ .
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In MLA style, if you are likely to use a dissertation, add Diss.(not italicized or enclosed in quotation marks), the university, and the year after the title.
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In MLA style, if you are likely to use a dissertation: after the title add Diss. (not italicized or enclosed in quotation marks), the university, and the year.
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The examples of the half-squatting, half-kneeling archers in Pit No. 2 are used to illustrate what kind of suits people wore at that time.
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If you are going to give speeches on the following three topics, in which speech will you use problem-solution order?
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The present tense should be used even if the instructions are no longer applicable.
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In MLA style, the editor of a collection of essays, stories, and so on is identified before the title; ed. here means “editor,” and eds. is used if there are two or more editors.
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Directions: Read the following sentences and decide whether they are correct or proper in language use. Then write Y for yes and N for no in the brackets. 11,000 MDA-MB-231 cells were cultured in each well for 24 hours.
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In cities across the United States, old factories, warehouses, schools railroad stations and other buildings are being renovated for new uses.City planners and private investors are finding the good buildings, no matter how old, can be remodeled for new purposes.“If you’d asked someone four or five years ago whether he’d rent an apartment in an abandoned piano factory of clothing warehouse, he’d have thought you were crazy,” says a New York architect.“Today, many people are eager to do it.” The renovating may include a former city hall or courthouse changed into offices; a bank or church changed into a restaurant; or , as in Plains, Georgia, a railroad station used as a center for a presidential campaign.
Only a few decades ago, renovation was unpopular and generally far more expensive than taking down abandoned building and string from the beginning.A change began in the 1960s with a number of well-advertised projects.They included Ghirardelli Square in San Francisco, where an old chocolate factory was restored and made into shops and restaurants, Trolly Square in Salt Lake, where unused warehouses were made into artists’ studios and apartments.
What caused the change？ “One reason is nostalgia,” a San Francisco builder suggests.“Maybe old is better than new, many people are saying.Feelings about preserving attractive or historic buildings have changed a great deal.” A second cause is economy.The cost of tearing down an old building and constructing a new one from nothing now has risen to the point where it is often less expensive to fix a solid older structure.Also builders realize that fixing up an existing building often requires no new permits, sewer lines, or water connections.
Even when the costs of restoration are the same as or a bit more than the costs of putting up a new building, fixing the old building may be better.A Boston architect says The advantage comes when you can develop a final project that is more desirable than a new building – one with the right location, more space, more floor area, a special character, materials of a particular quality.” Gradually, architects and builders are developing knowledge about renovation and preservation, bringing imagination and creativity to the job.
16.In the United States, renovating old buildings_____.
A.has had a long history
B.is becoming increasingly popular
C.is still unpopular
D.has just caught the fancy of architects and builders
17.Ghirardelli Square, Trolley Square, and the Soho district are projects that_________.
A.have been given much publicity
B.are little known to the public
C.have been widely discussed among builders and city planners
D.have changed the building business
18.“Nostalgia” in the 3rd paragraph most probably means________.
A.being conservative
B.being keen on saving money
C.being fond of things new
D.being fond of things of the remote past
19.Which of the following statements is true？
A.Every old building can be renovated for new uses
B.Renovating old buildings is always less costly than putting up new ones
C.Renovation does not require imagination and creativity
D.Fixing an old building may have advantages even when it costs a little more
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听力原文：Once you have arrived in our country, beware those professional pickpockets. Here's how to protect yourself. Women whose bags are hanging in front of them are tricky for the thieves, as there isn't a blind side. If you want make it even harder, use a bag with handles rather than a strap. For men, one of the best places to keep a wallet is in the back pocket of tight trousers. You'll feel any attempts to move it. Another good place is in the buttoned-up inside pocket of a jacket. There's just no way in. Even better, keep wallets attached to a cord or chain that is fastened to a belt.
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It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in advance. You cannot make choices in this matter. You either have science or you don't, and if you have it you are obliged to accept the surprising and disturbing pieces of information, along with the neat and promptly useful hits,
The only solid piece of scientific truth abut which I feel totally confident is that we are profoundly ignorant about nature. Indeed, I regard this as the major discovery of the past hundred years of biology. It is, in its way, an illuminating piece of news. It would have amazed the brightest minds of the 18th. century Enlightenment to be told by any of us how little we know and how bewildering seems the way ahead. It is this sudden confrontation with the depth and scope of ignorance that represents the most significant contribution of the 20th century science to the human intellect. In earlier times, we either pretended to understand how things worked or ignored the problem, or simply made up stories to fill the gaps. Now that we have begun exploring in earnest, we are getting glimpses of how huge the questions are, and how far from being answered. Because of this, we are depressed. It is not so bad being ignorant if you are totally ignorant; the hard thing is knowing in some detail the reality of ignorance, the worst spots and here and there the not-so-bad spots, but no true light at the end of the tunnel nor even any tunnels that can yet be trusted.
But we are making a beginning, and there ought to be some satisfaction. There are probably no questions we can think up that can' t be answered, sooner or later, including even the matter of consciousness. To be sure, there may well be questions we can't think up and therefore limits to the reach of human intellect, but that is another matter. Within our limits, we should be able to work our way through to all our answers, if we keep at it long enough, and pay attention.
According to the author, really good science ______.
A．would surprise the brightest minds of the 18th century Enlightenment
B．will help people to make the right choice in advance
C．will produce results which cannot be foreseen
D．will bring about disturbing results
