4. C2B is the r________ of the traditional e-commerce model of B2C. （an exchange of positions or functions)

If A is the point (-4, 1) and B is the point (2, 1), what is the area of the circle which has AB as a diameter?

A．3π

B．6π

C．9π

D．12π

E．36π

One reason why the woman of today takes a job is that she__________ ．

A.is younger when her children are old enough to look after themselves

B.does not like children herself

C.need not worry about food for her children

D.can retire from family responsibilities

If you know exactly what you want, the best route to a job is to get specialized training. A recent survey shows that companies like graduates in such fields as business and health care who can go to work immediately with very little on-the-job training.

That' s especially true of booming fields that are challenging for workers. At Cornell' s School of HotelAdministration, for example, bachelor's degree graduates get an average of four or five job offers with salaries

ranging from the high teens to the low 20s and plenty of chances for rapid advancement. Large companies, especially, like a background of formal education coupled with work experience.

But in the long nm, too much specialization doesn't pay off. Business, which has been flooded with MBA's, no longer considers the degree an automatic stamp of approval. The MBA may open doors and command a higher salary initially, but the impact of a degree washes out after five years.

As further evidence of the erosion of corporate faith in specialized degrees, Michigan State's Scheetz cites a pattern in corporate hiring practices. Although companies tend to take on specialists as new hires, they often seek out generalists for middle and upper-level management. "They want someone who isn' t constrained by nuts and bolts to look at the big picture," says Scheetz.

This sounds suspiciously like a formal statement that you approve of the liberal-arts graduate, Time and again labor-market analysts mention a need for talents that liberal-arts majors are assumed to have: writing and communication skills, organizational skills, open-mindedness and adaptability, and the ability to analyze and solve problems. David Birch claims he does not hire anybody with an MBA or an engineering degree, "I hire only liberal-arts people because they have a less-than-canned way of doing things," says Birch. Liberal arts means an academically thorough and strict program that includes literature, history, mathematics, economies, science, human behavior--plus a computer course or two. With that under your belt, you can feel flee to specialize. "A liberal-arts degree coupled with an MBA or some other technical training is a very good combination in the marketplace." says Scheetz.

What kinds of people are in high demand on the job market?

A．Students with a bachelor' s degree in humanities.

B．People with an MBA degree from top universities.

C．People with formal schooling plus work experience.

D．People with special training in engineering.

For years, Europeans have been using "smart cards" to pay their way through the day. They use them in shops and restaurants, plug them into pubic into telephones as and parking meters. In France smart cards cover anything from a bistro bill to a swimming - pool entry fee. In American, smart cards are not nearly so common -- only about 43,000 are now circulating in the US and Canada -- but Forrester Research of Cam- bridge, Mass. , predicts that number will balloon to 4.7 million by the year 2002.

What is a smart card, exactly, and how does it work?

Also called a chip card because of the tiny mixcroprocessor embedded in it, a smart card looks like the other plastic in your wallet. To make things more confusing, some smart cards pull double duty as regular ATM bank cards. The difference is that when you swipe your ATM (or debit) card at the grocery -store checkout, you're draining cash from your bank account. Smart cards, on the other hand, are worthless un- less they are "loaded with cash value", pulled directly from your bank account or traded for currency. The chip keeps track of the amounts stored and spent. The advantage, in theory, is convenience: consumers bother less with pocket change and are able to use plastic even at traditionally cash -only vendors. The electronic transaction doesn't require a signature, a PIN number or bank approval. Downside: lose the card, lose the money.

Most people are probably more familiar with stored -value cards equipped only with a magnetic strip, such as fare card issued to riders on the Washington metro or the New York City subway. The newer chip - enhanced versions, armed with more memory and processing power, have popped up in various places in the past years or so, from college campuses to military bases to sports stadiums. Other experiments are under way. A health -care claims processor in Indianapolis, Ind. , hopes smart cards will streamline medical - bill payments. In Ohio, food - stamp recipients receive a smart card rather paper vouchers.

Smart cards issued for general commerce are rarer, unless you happen to live in a place designated for a test run, such as Manhattan's Upper West Side. But big bank and plastic - purveying kings Visa and MasterCard are hot for the idea, promising more extensive trials and more elaborate, multipurpose cards capable of rendering everything else you carry -- plastic, paper or coin-- superfluous.

Today's smart cards may not be revolutionizing the way we buy the morning paper yet, but they could turn out to be right tool spur Internet commerce and banking. For the time being, though, smart cards are just another way to buy stuff. And it could be a while before even that catches on. Remember: some people still don't trust ATMs either.

Why are smart cards not nearly so common in American?

A．Probably because American have got used to ATM bank cards or stored -value cards.

B．Probably because American is too large.

C．Probably because American like signature.

D．Probably because American like paper vouchers.

For years, Europeans have been using "smart cards" to pay their way through the day. They use them in shops and restaurants, plug them into pubic into telephones as and parking meters. In France smart cards cover anything from a bistro bill to a swimming-pool entry fee. In American, smart cards are not nearly so common -- only about 43,000 are now circulating in the US and Canada -- but Forrester Research of Caul-bridge, Mass, predicts that number will balloon to 4.7 million by the year 2002.

What is a smart card, exactly, and how does it work?

Also called a chip card because of the tiny mixcroprocessor embedded in it, a smart card looks like the other plastic in your wallet. To make things more confusing, some smart cards pull double duty as regular ATM bank cards. The difference is that when you swipe your ATM (or debit) card at the grocery- store checkout, you're draining cash from your bank account. Smart cards, on the other hand, are worthless un- less they are "loaded with cash value", pulled directly from your bank account or traded for currency. The chip keeps track of the amounts stored and spent. The advantage, in theory, is Convenience: consumers bother less with pocket change and are able to use plastic even at traditionally cash -only vendors. The electronic transaction doesn't require a signature, a PIN number or bank approval. Downside: lose the card, lose the money.

Most people are probably more familiar with stored-value cards equipped only with a magnetic strip, such as fare card issued to riders on the Washington metro or the New York City subway. The newer chipenhanced versions, armed with more memory and processing power, have popped up in various places in the past years or so, from college campuses to military bases to sports stadiums. Other experiments are under way. A health -care claims processor in Indianapolis, Ind, hopes smart cards will streamline medical-bill payments. In Ohio, food-stamp recipients receive a smart card rather paper vouchers.

Smart cards issued for general commerce are rarer, unless you happen to live in a place designated for a test run, such as Manhattan's Upper West Side. But big bank and plastic-purveying kings Visa and MasterCard are hot for the idea, promising more extensive trials and more elaborate, multipurpose cards capable of rendering everything else you carry -- plastic, paper or coin-- superfluous.

Today's smart cards may not be revolutionizing the way we buy the morning paper yet, but they could turn out to be right tool spur Internet commerce and banking. For the time being, though, smart cards are just another way to buy stuff. And it could be a while before even that catches on. Remember: some people still don't trust ATMs either.

Why are smart cards not nearly so common in American?

A．Probably because American have got used to ATM bank cards or stored -value cards.

B．Probably because American is too large.

C．Probably because American like signature.

D．Probably because American like paper vouchers.

One reason why the woman of today may take a job is that she______.

A．is younger when her children are old enough to look after themselves

B．does not like children herself

C．need not worry about food for her children

D．can retire from family responsibilities when she reaches sixty

Which of the following artists pioneered Cubist art?

A．Cezanne.

B．Picasso.

C．Michelangelo.

D．An unknown artist.

Which of the following artists pioneered Cubist art?

A．Cezanne.

B．Picasso.

C．Michelangelo.

D．An unknown artist.