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I wonder what has happened to Annie. She ______ have been here by now.
A . A. shall
B . B. can
C . C. should
D . D. need
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A switch that is to be added to the production network has been preconfigured （trunks， VLANs， VTP， and STP） and was tested in your lab. After installing the switch into the network， the entire network went down. What might explain what happened？ （）
A . The new switch happened to be running Cisco Catalyst operating system， while the other network switches were running Cisco IOS Software.
B . The configuration revision of the new switch was higher than the configuration revision of the production VTP domain.
C . The link costs on the new switch are set to a high value， causing all ports on the new switch to go into a forwarding mode and none into blocking mode， thereby causing a spanning-tree loop.
D . The ports connecting to the two switches have been configured incorrectly. One side has the command switchport mode access and the other switchport mode trunk.
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Something important has come up.This sentence means something important happens unexpectedly.
A . 正确
B . 错误
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A new Aironet 1200 series AP has been installed in the Company WLAN. What happens when this device is connected to the LAN， with a default configuration？（）
A . The access point will attempt to download an encryption key from the nearest wireless server.
B . The access point makes several attempts to get an IP address from the DHCP server. If the access point does not receive an address， it assigns itself the IP address 10.0.0.1 for 5 minutes.
C . The access point will attempt to connect to the nearest wireless server using LEAP authentication.
D . The access point requests an IP address from the DHCP server. If the access point does not receive an address， it continues to send requests indefinitely.
E . None of the other alternatives apply
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they are（）with envy and jealousy at what has happened to their sister.
A . consumed
B . overjoyed
C . hideous
D . grief-stricke
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A HACMP/XD：HAGeo cluster has been installed with four nodes， two nodes at each site. The cluster is protected from site isolation by the DBFS facility in HACMP/XD：HAGeo. In the event of a site failure，what happens？（）
A . The dominate site will always assume the non-dominate site has failed and continue processing.
B . The dominate site initiates a call to the non-dominate site to verify if any of the nodes are functional.
C . The non-dominate site initiates a call to the dominate site to verify if any of the nodes are functional.
D . The nodes are completely independent and can call each other if they detect a total failure of the ZGeo_Primary network.
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A cluster using IPAT via IP aliasing has four adapters. Normally there are several resource groups that have a total of four service IP labels. When two of the adapters fail， what happens？（）
A . The resource group containing the IP labels changes to an "offline" state.
B . The IP service labels of the failed adapters relocate the surviving adapters.
C . Nothing because the resource groups wait for the adapters to become active again.
D . The resource groups containing the IP labels of the failed adapters migrate to a backup node.
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In “The Egg”, what has happened to the young couple, when the narrator is born into the world?
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What has happened in Vermont?
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What is cause and what is effect？A cause is what ______ something happen; an effect is what happens as result of a ______.
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What happened in the conversation?
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2.What happened to Sophia?
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What happened at the hotel？
A．There was no electricity.
B．There was no water.
C．There was a fire.
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What has happened since the end of the Ice Age？
A．Many species have moved further north.
B．Many new species have come into existence.
C．Many species have developed a habit of migration.
D．Many species have become less sensitive to climate.
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What happened last month？
A．Melissa transferred from the Taiwan office to the Seattle office.
B．A coworker of Nicholas Price left the company.
C．The company won a big contract.
D．The employees celebrated Melissa"s promotion.
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What will happen after October 20？
A．Applicants will be interviewed.
B．The successful applicant will be notified.
C．Applicants will start submitting resumes.
D．Applications will no longer be accepted.
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Have you ever received____of what has happened to her？
A．the word
B．words
C．word
D．the words
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What will happen on April 22？
A．A public ceremony will take place.
B．A holiday weekend will begin.
C．A construction project will commence
D．A political committee will meet.
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you tell me what has happened？
A．May
B．Must
C．Nee
D．Could
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What is likely to happen？
A．Danielle invites Melissa to dine at her home.
B．Danielle visits Melissa at Melissa's office.
C．Melissa tells Danielle how her son behaves at school.
D．Melissa pays Danielle for her effort in the event.
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What happened in 1215？
A.It was the year of Norman Conquest in British history.
B.Forced by barons, King John signed the Magna Carta.
C.Henry IV granted the Commons the power to review money grants.
D.King Egbert united England under his rule.
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The onrush of cheap communications, powerful computers and the Internet all explain why many people feel that, nowadays, change is happening ever more rapidly as technological progress accelerates. Moore's law, that the power of microchips doubles every 18 months, has been tested and found correct. This is what gives people the sense of a world shifting beneath their feet.
2. Yet the implication that rapid change is a new phenomenon is again misleading. If you measure the time it takes for a technology to become widely diffused, today's experience does not seem unusual. Take the car. The basic patent for an internal-combustion engine capable of powering a car was fried in 1877. By the late 1920s—50 years later—over half of all American households owned a car.
3. The comparable dates for the computer axe harder to tie down, but the first big computer, based on vacuum valves, was built in 1946. The transistor—the first semiconductor device—was invented at Bell Laboratories in 1948. The first patent for an integrated circuit was filed in 1959. Now, in 1999-50 years after the first one was built—around half of American households own a computer. The pace of introduction has been similar to that of the car.
4. You have to cheat, choosing only the date for the personal computer, say(mid-1970s), or the internet (ditto) to make it seem much more rapid.
Comparing its diffusion among private users is, you might say, unfair to the computer, for that machine's main use is in businesses. On that measure, the best historical analogy is with electrification, and the spread of the electric dynamo into factories.
5. According to Paul David, a historian at Stanford University in California, the first electricity-generating stations had been installed in New York and London in 1881, but it was well into the 1920s before the dynamo became widely used and started to raise productivity. The adoption of the computer in business has also been slow, and failed to have any measurable impact on productivity until very recently.
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I can't __________ what has happened to the vegetables, for they were freshly picked this morning. A． figure out B. work out C. look out D. turn out
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I don't know what has happened, and don't know what to do next.
