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【单选题】

The scourge that’s plaguing cruise lines--and causing thousands of tourists to rethink their holiday travel plans--didn’t start this year, nor did it even start on a ship. It began, as far as the Centers for Disease Control (CDC) can tell, in Norwalk, U. S., in October 1968, when 116 elementary school children and teachers suddenly became iii. The CDC investigated, and the cause was discovered to be a small, spherical, previously unclassified virus that scientists named, appropriately enough, the Norwalk virus.
Flash forward 34 years, and Norwalk-like viruses ( there’s a whole family of them) are all over the news as one ocean liner after another limps into port with passengers complaining of nausea and vomiting. The CDC, which gets called in whenever more than 2% of a vessel’s passengers come down with the same disease, identified Norwalk as the infectious agent and oversaw thorough ship cleaning--which, to the dismay of the owners of the cruise lines, haven’t made the problem go away.
So are we in the middle of an oceangoing epidemic Not according to Dave Forney, chief of the CDC’s vessel-sanitation program. He sees this kind of thing all the time; a similar outbreak on sever al ships in Alaska last year got almost no press. In fact, he says, as far as gastrointestinal illness goes, fewer people may be getting sick this year than last.
Norwalk-like viruses, it turns out, are extremely common--perhaps second only to cold viruses-and they tend to break out whenever people congregate in close quarters for more than two or three days. Oceangoing pleasure ships provide excellent breeding grounds, but so do schools, hotels, camps, nursing homes and hospitals. "Whenever we look for this virus," says Dr. Marc Widdowson, a CDC epidemiologist, "we find it." Just last week 100 students (of 500) at the Varsity Acres Elementary School in Calgary, Canada, stayed home sick. School trick Hardly. The Norwalk virus had struck again.
If ocean cruises are your idea of fun, don’t despair. This might even be a great time to go shipping for a bargain. The ships have been cleaned. The food and water have been examined and found virus free. According to the CDC, it was probably the passengers who brought the virus aboard.
Of course, if you are iii or recovering from a stomach bug, you might do everybody a favor and put off your travel until the infectious period has passed (it can take a couple of weeks). To reduce your chances of getting sick, the best thing to do is wash your hands--frequently and thoroughly-- and keep them out of’ your mouth.
One more thing: if, like me, you are prone to motion sickness, don’t forget to pack your Drama mine.
We can learn from the fourth paragraph that

A.
students are easily attacked by the Norwalk-like virus.
B.
Norwalk-like viruses tend to break out in closed crowded place.
C.
Norwalk-like viruses might cause flu.
D.
Norwalk-like viruses are not widespread.
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【单选题】Six years later, in an about-face, the FBI admits that federal agents fired tear gas canisters capable of causing a fire at the Branch Davidian compound near Waco, Texas in 1993. But the official said...

A.
About 51 people lived in the compound at the time of the event in 1993.
B.
It consisted of a main structure and a bunker.
C.
It was built of stone.
D.
It was a schoolhouse.

【单选题】4() A.manufacturing B.selling C.allotting D.purchasing

A.
Advances in computers and data networks inspire visions of a future " information economy" in which everyone will have (1) to gigabytes of all kinds of information anywhere and anytime. (2) information has always been a (3) difficult commodity to deal with, and, in some ways, computers and high-speed networks make the problems of buying, (4) , and distributing information goods worse (5) better. The evolution of the Internet itself (6) serious problems. (7) the Internet has been privatized, several companies are (8) to provide the backbones that will carry traffic (9) local networks, but (10) business models for interconnection--who pays how much for each packet (11) , for example--have (12) to be developed. (13) interconnection standards are developed that make (14) cheap and easy to transmit information across independent networks, competition will (15) . If technical or economic (16) make interconnection difficult, (17) transmitting data across multiple networks is expensive or too slow, the (18) suppliers can offer a significant performance (19) ; they may be able to use this edge to drive out competitors and (20) the market.

【单选题】How can a company successfully register a name with the Internet() A. It must pay up to $10,000 or a nonrefundable deposit. B. Its application must be the first one at the top of the registration queu...

A.
The Net Cost of Making a Name for Yourself
B.
Companies are paying up to $10,000 to register a domain name on the Internet even though there is no guarantee that they will get the name they want.
C.
The task of registering domains ending in. com, org, .edu and. net is at present contracted out by the US government to the Virginia-based company Network Solutions. The contract runs out this year, and the government wants to bring in a different scheme.
D.
But last year, an ad hoc committee of the Internet’s great and good revealed its own plan. This involved setting up seven new domains, each indicating the kind of business or organisation using that name. The committee recruited 88 companies around the world to act as registrars for its firm, . shop, . web, . arts, . rec, . info and. nom domains. The US government has still to give the system its blessing, and may yet push ahead with its original scheme. Despite this, the 88 registrars have been taking applications for several months. They are due to start registering names this month with the Internet Council of Registrars, which grew out of the ad hoc committee.
E.
To prevent conflicting names from being registered, the council will take one name from each registrar in mm before going back for the second name in their queues, and so on. This has led to a flourishing trade, with companies trying to buy a place near the head of the queue. Global Names of Singapore is charging $10,000 to make sure a request for a name is the first one it sends off to the central database. Other registrars are charging nonrefundable deposits for places at the top of the queue. David Maher, chairman of the Policy Oversight Committee that is helping to set up and oversee the system, says that all registrars are subject to local laws regarding consumer protection and competition. But he says that the committee "will not act as an enforcement body in this area.\

【单选题】18() A.biggest B.vastest C.largest D.greatest

A.
Advances in computers and data networks inspire visions of a future " information economy" in which everyone will have (1) to gigabytes of all kinds of information anywhere and anytime. (2) information has always been a (3) difficult commodity to deal with, and, in some ways, computers and high-speed networks make the problems of buying, (4) , and distributing information goods worse (5) better. The evolution of the Internet itself (6) serious problems. (7) the Internet has been privatized, several companies are (8) to provide the backbones that will carry traffic (9) local networks, but (10) business models for interconnection--who pays how much for each packet (11) , for example--have (12) to be developed. (13) interconnection standards are developed that make (14) cheap and easy to transmit information across independent networks, competition will (15) . If technical or economic (16) make interconnection difficult, (17) transmitting data across multiple networks is expensive or too slow, the (18) suppliers can offer a significant performance (19) ; they may be able to use this edge to drive out competitors and (20) the market.
相关题目:
【单选题】Six years later, in an about-face, the FBI admits that federal agents fired tear gas canisters capable of causing a fire at the Branch Davidian compound near Waco, Texas in 1993. But the official said...
A.
About 51 people lived in the compound at the time of the event in 1993.
B.
It consisted of a main structure and a bunker.
C.
It was built of stone.
D.
It was a schoolhouse.
【单选题】4() A.manufacturing B.selling C.allotting D.purchasing
A.
Advances in computers and data networks inspire visions of a future " information economy" in which everyone will have (1) to gigabytes of all kinds of information anywhere and anytime. (2) information has always been a (3) difficult commodity to deal with, and, in some ways, computers and high-speed networks make the problems of buying, (4) , and distributing information goods worse (5) better. The evolution of the Internet itself (6) serious problems. (7) the Internet has been privatized, several companies are (8) to provide the backbones that will carry traffic (9) local networks, but (10) business models for interconnection--who pays how much for each packet (11) , for example--have (12) to be developed. (13) interconnection standards are developed that make (14) cheap and easy to transmit information across independent networks, competition will (15) . If technical or economic (16) make interconnection difficult, (17) transmitting data across multiple networks is expensive or too slow, the (18) suppliers can offer a significant performance (19) ; they may be able to use this edge to drive out competitors and (20) the market.
【单选题】How can a company successfully register a name with the Internet() A. It must pay up to $10,000 or a nonrefundable deposit. B. Its application must be the first one at the top of the registration queu...
A.
The Net Cost of Making a Name for Yourself
B.
Companies are paying up to $10,000 to register a domain name on the Internet even though there is no guarantee that they will get the name they want.
C.
The task of registering domains ending in. com, org, .edu and. net is at present contracted out by the US government to the Virginia-based company Network Solutions. The contract runs out this year, and the government wants to bring in a different scheme.
D.
But last year, an ad hoc committee of the Internet’s great and good revealed its own plan. This involved setting up seven new domains, each indicating the kind of business or organisation using that name. The committee recruited 88 companies around the world to act as registrars for its firm, . shop, . web, . arts, . rec, . info and. nom domains. The US government has still to give the system its blessing, and may yet push ahead with its original scheme. Despite this, the 88 registrars have been taking applications for several months. They are due to start registering names this month with the Internet Council of Registrars, which grew out of the ad hoc committee.
E.
To prevent conflicting names from being registered, the council will take one name from each registrar in mm before going back for the second name in their queues, and so on. This has led to a flourishing trade, with companies trying to buy a place near the head of the queue. Global Names of Singapore is charging $10,000 to make sure a request for a name is the first one it sends off to the central database. Other registrars are charging nonrefundable deposits for places at the top of the queue. David Maher, chairman of the Policy Oversight Committee that is helping to set up and oversee the system, says that all registrars are subject to local laws regarding consumer protection and competition. But he says that the committee "will not act as an enforcement body in this area.\
【单选题】18() A.biggest B.vastest C.largest D.greatest
A.
Advances in computers and data networks inspire visions of a future " information economy" in which everyone will have (1) to gigabytes of all kinds of information anywhere and anytime. (2) information has always been a (3) difficult commodity to deal with, and, in some ways, computers and high-speed networks make the problems of buying, (4) , and distributing information goods worse (5) better. The evolution of the Internet itself (6) serious problems. (7) the Internet has been privatized, several companies are (8) to provide the backbones that will carry traffic (9) local networks, but (10) business models for interconnection--who pays how much for each packet (11) , for example--have (12) to be developed. (13) interconnection standards are developed that make (14) cheap and easy to transmit information across independent networks, competition will (15) . If technical or economic (16) make interconnection difficult, (17) transmitting data across multiple networks is expensive or too slow, the (18) suppliers can offer a significant performance (19) ; they may be able to use this edge to drive out competitors and (20) the market.
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