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Over ninety percent of 18- to 25-year-olds have got their own mobile phones.
A．Y
B．N
C．NG
答案
更多“Over ninety percent of 18- to 25-year-olds have got their own mobile phones.A．YB．NC．NG”相关的问题
第1题
听力原文： The death rate from influenza rose markedly in the 1990's, federal scientists reported. The explanation, they said, is that a greater proportion of the population is elderly and thus particularly susceptible to flu. There was an average of 36,000 flu deaths a year in the 1990's as compared to 20,000 a year in previous decades, the investigators, from the Centers for Disease Control and Prevention, reported in the Journal of the American Medical Association. Ninety percent of influenza deaths were in people 65 and older, said Dr. Keiji Fukuda, the principal researcher for the study. But Dr. Fukuda and his colleagues reported that the virus was especially deadly in people over 85, who might be up to 32 times more likely than those 65 to 69 to die from a flu infection.
The researchers also concluded that there were large numbers of deaths among the elderly from another virus, respiratory syncytial virus, known as R. S. V. As many as 78 percent of the 11,000 people who died from R. S. V. each year were 65 and older, the researchers concluded.
In an editorial accompanying the paper, Dr. David M. Morens of the National Institute of Allergy and Infectious Diseases, said that many people who were particularly vulnerable to influenza did not get flu vaccines, the only method of preventing the disease. Many mistakenly believe that the vaccine, which is made from a killed virus, can give them the flu. Over the last few years, Dr. Fukuda said, just 65 percent to 67 percent of people 65 and older were immunized. Even when they do get the vaccine, he added, it is less effective in the elderly than it is in younger people. And there is no vaccine to protect against R. S. V. Dr. Morens was not optimistic about the immediate future. The best hope, he said, is for improved flu vaccines and a vaccine for R. S.V. But for now, he said, doctors must do a better job of persuading older people to be vaccinated.
(30)
A．20,000
B．26,000
C．30,000
D．36,000
第2题
A．independently
B．respectively
C．individually
D．separately
第3题
Over the past three decades, the enrollment of overseas students has increased.
A．by 2.5 million
B．by 800,000
C．at an annual rate of 3.9 percent
D．at an annual rate of 8 percent
第4题
A．Y
B．N
C．NG
第5题
Over the past three decades, the enrollment of overseas students has increased ______.
A．by 2.5 million
B．by 800,000
C．at an annual rate of 3.9 percent
D．at an annual rate of 8 percent
第6题
The term investment portfolio (证卷投资组合) conjures up visions of the truly rich--the Rockefellers, the WalMart Waltons, Bill Gates. But today, everyone--from the Philadelphia firefighter, his part-time receptionist wife and their three children, to the single Los Angeles lawyer, starting out on his own--needs a portfolio.
A portfolio is simply a collection of financial assets, it may include real estate, rare stamps and coins, precious metals and even artworks. But those are for people with expertise. What most of us need to know about arc stocks, bonds and cash (including such cash equivalents as money market funds).
How do you decide what part of your portfolio should go to each of the big three？ Begin by urulerstanding that stocks pay higher returns but are more risky; bonds and cash pay lower returns but are less risky.
Reach by Ibbotson Associates, for example, shows that large company stocks, on average, have returned 11.2 percent annually since 1926. Over the same period, by comparison, bonds have returned an annual average of 5.3 percent and cash, 3.8 percent.
But short term risk is another matter. In 1974, a one-year ＄1000 investment in the stock market would have declined to ＄735.
With bonds, there are two kinds of risk: that the borrower won't pay you back and that the money you'll get won't be worth very much. The U.S. government stands behind treasury bonds, so the credit risk is almost nil. But the inflation risk remains. Say you buy a ＄1000 bond maturing in ten years. If inflation averages about seven percent over that time, then the＄1000 you receive at maturity can only buy ＄500 worth of today's goods.
With cash, the inflation risk is lower, since over a long period you can keep rolling over your CDs every year (or more often). If inflation rises, interest rates rise to compensate.
As a result, the single most important rule in building a portfolio is this: If you don't need the money for a long time, then put it into stocks. If you need it soon, put it into bonds and cash.
This passage is intended to give 'advice on______.
A．how to avoid inflation risks
B．what kinds of bonds to buy
C．how to get rich by investing in stock market
D．how to become richer by spreading the risk
第7题
听力原文： A person's social prestige seems to be determined mainly by his or her job. Occupations are valued in terms, of the incomes associated with them, although other factors can also be relevant-particular the amount of education a given occupation requires and the degree of control over other it provides. The holders of political power also tend to have high prestige.
Unlike power and wealth, which do not seem to be becoming more equally shared, the symbols of prestige have become available to an increasing number of Americans. Tim main reason is the radical change in the nature of jobs over the course of this century. In 1900, nearly 40 percent of the labor force were farm workers and less than 20 percent held white-collar jobs. At the beginning of the 1980s, however, less than 5 percent of the labor force worked on farms and white-collar workers were the largest single occupational category. Blue-collar workers, the largest category in the mid-fifties, now constitute less than a-third of all workers. The increase in the proportion of high prestige jobs has allowed a much greater number of Americans to enjoy these statuses and the lifestyle. that go with them.
(33)
A．Education.
B．Wealth.
C．Diligence.
D．Political status.
第8题
听力原文： Americans now spend more money on fast food than they do on higher education, personal computers, software or new cars. The rapid growth of the fast-food industry has been driven by fundamental changes in the U.S. economy. The hourly wage of the average American worker peaked in 1973 and then steadily declined until last year. Women entered the work force in record numbers, often motivated less by feminism than by a need to help pay the bills. In 1975, about a third of American mothers with young children worked outside the home; today about two-thirds of such mothers are employed. As the sociologists Cameron Lynne Macdonald and Carmen Sirianni have noted, the entry of women into the nation's work force has greatly increased demand for the types of services that housewives traditionally performed: cooking, cleaning and child-care. The fast-food industry has benefited from these demographic changes, supplying at low cost the meals no longer prepared in the home and hiring at low wages millions of young women in need of extra income.
The McDonald's Corp. has become a powerful symbol of America's service economy, the rector now responsible for ninety percent of the country's new jobs. In 1968, McDonald's operated about 1,000 restaurants. Today it has about 23,000 restaurants worldwide and opens roughly 2,000 new ones each year. An estimated one of every eight Americans has worked at McDonald's. The company annually trains more new workers than the U.S. Army. McDonald's is the nation's largest purchaser of beef and potatoes. It is the second-largest purchaser of poultry.
(33)
A．Because they are motivated by feminism.
B．Because they have to own money to support their family.
C．Because they don't have to take care their babies.
D．Because their husband want them to work.
第9题
In modern times the situation was changed, thanks in large part to the profits from overseas trade and colonies, and to the settlement in new continents.Therefore, ninety percent of the world's total industrial output comes today from European origin.About two-thirds of the world's people are earning about $200 per capital every year, while the remaining one-third enjoy per capital incomes as high as $2,400 in the case of the United States.
1.In the 11th century China was___.
A.more underdeveloped than Western Europe
B.more advanced in technology than England
C.as developed as Western Europe
D.producing as much iron as Western Europe
2.Constantinople was_______.
A.a part of Western Europe
B.part of China
C.quite rich and prosperous
D.was a city with a population of 1.3 million
3.Europe became much more developed in modern times mainly by().
A.attacking Constantinople
B.making profits from foreign trade and their colonies
C.learned from the developed parts of the world and improved its technology
D.having its people form. the idea of working hard
4.It can NOT be concluded from the passage that().
A.several Chinese cities altogether had a total population of 1.3 million
B.westerners admired Constantinople for its marvelous buildings
C.Constantinople was much more developed than the invaders 'hometown
D.Americans have much higher salaries than two-thirds of the world' s people
5.Which of the following is true according to the passage？()
A.Four fifths of the world's products come from Europe
B.Ninety percent of the world's industrial output is from Europe
C.Europe began to develop when they attacked Constantinople
D.Westerners set up colonies after they became rich
