单选题When he died he left ______ amounting to $50,000. A. debts B. obligations C. accounts D. payments

单选题During the recession, job losses were not equitably shared; employment rates fell more for some groups than others. It is also well-known that job losses were greater among men than among women—the so-called mancession—largely because men had been more likely to work in the residential construction and manufacturing industries that were hit hardest. What I"m going to reveal is the employment rates separately for married women and unmarried women who were heads of households. Not surprisingly, the latter are somewhat more likely to work. More surprising is that employment rates fell so much more for these unmarried women who were heads of household. Employment per capita fell 4.7 percentage points among the latter, compared with 1.6 percentage points among the former. The job-loss gap associated with marital status turns out to be as large as the more widely recognized job loss gap associated with gender. Neither group of women had many members working in construction, so the decline of construction cannot explain these differences. An "added-worker effect" has been observed during a number of recessions: more married women worked during a recession than during an expansion because wives sometimes begin work to help replace the income lost by their unemployed husbands. The employment rate among nonelderly married men fell 4 percentage points, to 83 percent from 87 percent. While that is a large decline by historical standards, it still means that roughly 95 percent of wives whose husbands were employed in 2007 had husbands who continued their employment during the recession. Among the 5 percent of wives who were not so fortunate, roughly two-thirds of them had already been working before the recession and therefore could not react to their husband"s unemployment by starting work. Therefore the added-worker effect is much too small to explain the sharply different job-loss rates by marital status. What seems to be especially different between married and unmarried women is their propensity to be unemployed for long periods. The point is that married and unmarried women enter unemployment at about the same rate, but unmarried women leave it more slowly. Part of the difference in labor-market experiences has to do with the safety net. Many safety-net programs, like the Supplemental Nutrition Assistance Program, which provides food stamps, and Medicaid, base eligibility on family income. A married woman is usually ineligible for a number of safety-net programs because her family"s income is above the poverty line regardless of her employment status. Unmarried household heads, on the other hand, are usually the sole breadwinner for the family, and when their income falls to zero, the household income essentially does, too. For this reason, more unmarried women who are heads of households can expect anti-poverty programs to help them when they are out of work than married women can. An unintended but unavoidable consequence of providing someone a cushion when they are without work is that they are provided with less incentive to get back to work.

单选题Most of the young people hold the mistaken belief that goods produced in our own country are ______ to imported ones.

单选题Would you please ______ my web site just before I publish it?

单选题Passage 7 Professor Smith recently persuaded 35 people, 23 of them women, to keep a diary of all their absent-minded actions for a fortnight. When he came to analyze their embarrassing lapses(差错)in a scientific report, he was surprised to find that nearly all of them fell into a few groupings. Nor did the lapses appear to be entirely random. One of the women, for instance, on leaving her house for work one morning threw her dog her earrings and tried to fix a dog biscuit on her ear. "The explanation for this is that the brain is like a computer," explains the professor. "People program themselves to do certain activities regularly. It was the woman's custom every morning to throw her dog two biscuits and then put on her earrings. But somehow the action got reversed in the program." About one in twenty of the incidents the volunteers reported were these"program assembly failures". Altogether the volunteers logged 433 unintentional actions that they found themselves doing--an average of twelve each. There appear to be peak periods in the day when we are at our zaniest (荒谬可笑的) . These are two hours some time between eight a.m. and noon, between four and six p.m. with a smaller peak between eight and ten p.m. "Among men the peak seems to be when a changeover in brain 'programs' occurs, as for instance between going to and from work." Women on average reported slightly more lapses--12.5 compared with 10.9 for men--probably because they were more reliable reporters. A startling finding of the research is that the absent-minded activity is a hazard of doing things in which we are skilled. Normally, you would expect that skill reduces the number of errors we make. But trying to avoid silly slips by concentrating more could make things a lot worse--even dangerous.

单选题My children are looking forward to ______ a trip to Beijing next month.

单选题W: My watch is not working.______.M: It' s ten past twenty.A. What time is it?B. What' s the time?C. What is time by your watch?D. What time is it by your watch?

单选题Breast cancer is second only to skin cancer as the most common malignancy diagnosed in women in the United States. In 2001, about 192 200 new cases of invasive breast cancer were diagnosed and 40 200 women died of the disease. Only lung cancer accounts for more cancer deaths in women. The incidence of breast cancer has increased over the last 20 years. Although some of the increase can be attributed to changes in reproductive patterns, such as delayed childbearing and having fewer children, much of the rise is due to the increased detection of smaller, earlier-stage cancers with the widespread adoption of mammography screening in asymptomatic women. According to data from the Surveillance, Epidemiology, and End Results Program, incidence rates of tumors less than 2.0 cm in diameter more than doubled from 1980 to 1987, whereas rates of tumors greater than 3.0 cm decreased by 27%. In particular, incidence rates of in situ breast cancer have risen dramatically over the last 25 years. The annual increase in age-adjusted ductal carcinoma in situ incidence rates from 1983 to 1992 was 17.5%. Although the incidence of breast cancer has been increasing, there has been a decline in breast cancer mortality. Death rates decreased 1.6% annually between 1989 and 1995, then 3.4% annually between 1995 and 1998. This improvement in the mortality rate has been attributed to both mammography screening and improvements in breast cancer treatment. Breast cancer has a number of identifiable risk factors. Aside from a personal history of breast cancer, the most important risk factor in women is age. Between 1994 and 1998, 77% of new cases of breast cancer and 84% of breast cancer deaths occurred in women older than 50 years. Other non-modifiable risk factors include family history, age at birth of the woman's first child, early menarche, and late menopause. Potentially modifiable risk factors include alcohol consumption, use of postmenopausal hormones, and obesity after menopause. Although most breast cancer cases are sporadic, up to 10% are linked to genetic predisposition. Women with a family history of breast cancer, especially in a first-degree relative (i. e, mother, sister, or daughter), have an increased risk of breast cancer. In general, a "positive family history" of breast cancer confers a relative risk of 2.0 to3.0, with the degree of risk varying directly with the closeness of the relationship. Paternal and maternal relatives with breast cancer contribute similarly to the increased risk. Most women with a family history of breast cancer do not have a history striking enough to suggest the presence of an inherited breast cancer syndrome. In many cases, primary care physicians can readily distinguish between families with heritable cancers and those with several sporadic cases. Women at high risk of inherited breast cancers typically have several relatives with breast cancer diagnosed before age 45 to 50 and may also have a family history of bilateral breast cancer, ovarian cancer, or male breast cancer.

单选题In Darrah's opinion, people should

单选题1 It was a normal day in the life of the American Red Cross in Greater New York. First, part of a building on West 140th Street, in Harlem, fell down. Beds tumbled through the air, people slid out of their apartments and onto the ground, three people died, and the Red Cross was there, helping shocked residents find temporary shelter, and food and clothing. Then it was back downtown for that evening's big fund-raiser, the Eleventh An nual Red Cross Award Dinner Dance, at the Pierre. "That's why I have bad hair to night," Said Christopher Peake, a Red Cross spokesman who had spent much of the day at the Harlem scene, in the drizzling rain. He was now in a tuxedo, and actually his hair didn't look so bad, framed by a centerpiece of tulips and jonquils, and perhaps improved by subdued lighting from eight crystal chandeliers. Definitely not having a bad-hair night was Elizabeth Dole, the wife of Senator Robert Dole and the president of the American Red Cross. President Dole has chestnut-colored Re publican hair, which was softly coifed, and she was wearing a fitted burgundy velvet eve ning suit ( "Someone made it for me! I love velvet!" she exclaimed, in her enthusiastic, Northern Carolina hostess voice) and sparkling drop earrings. Of course, she hadn't been standing in the rain in Harlem; she had just flown up on the three-o'clock shuttle from Washington. Dole is extremely pretty, with round green eyes and a full mouth and a direct personality. She tilts her head attentively when she listens. She was the recipient of the evening's award; previous award winners have included Alice Tully, Princess Yasmin Aga Khan and, most recently, Brooke Astor. Not exactly a sequence at the end of which you would expect to find Elizabeth Dole, but award givers are famous for having political instincts as well as philanthropic ones. Surrounded by the deep-blue swags and golden draperies of the ballroom were more than thirty-five dinner tables set with groupings of candles and floral centerpieces and Roy al Doulton china, American Express was there. So were Bristol-Myers Squibb; Coopers Lybrand; the New York Life; ...and Price Waterhouse. The actress Arlene Dahi, with her rather red hair and her bearded husband, presided over one table. Otherwise, it was a typical, faceless, captain-of-industry fund raiser (No models! No stars! ), of which there seems to be at least one every night in New York City. It was not a society night, but still the evening raised four hundred and thirty thousand dollars.

单选题These shops normally______ in old antique items, not in modern ones.

单选题We'd like to______a table for five for dinner this evening. A. reserve B. prosperity C. sustain D. retain

单选题The boys often used to throw a stone or two at the glasshouse because ______.

单选题After a run of several thousand years, it is entirely fitting that 2000 will be marked as the year the tide turned against taxation. Clay tablets recall the taxes of Hammurabi in the Babylon of 2000BC, but the practice is certainly older. People in power have always tried to divert some of the proceeds of economic activity in their own direction. Lords took feudal dues from their vassals; landowners took tolls from merchants; gangsters took protection money from small businesses; governments took taxes from their citizens. Despite the different names, the principle has remained constant: those who do not produce take resources from those who do, and spend it on altogether different things. The tide is turning because of the convergence of several factors, in the first place, taxes are becoming harder to collect. Capital is more mobile than ever, and inclined to fly from places that tax to places that do not. Governments do not move their boundaries and jurisdictions as rapidly as companies can change locations. Attempts to establish trans-national tax powers are almost certainly, ably doomed by international competition to attract economic activity. Many businesses will choose to stay out of reach. The global economy and the Internet mean that purchases can now cross frontiers. People buy books, clothes, and cars from abroad, and any finance minister who likes to tax these items find his tax base diminishing. It is not only capital and goods which are harder to pin down. Even wages are crossing frontiers. The rise of the service sector means that many income-generating activities can take place across frontiers, causing yet more headaches for overstretched public treasuries. Furthermore, the pace of electronic, hard-to-trace activity is accelerating. No less important has been the rise of political resistance. The past quarter-century has been marked by a movement led in Britain and America itself in California's famous tax-cutting referendum Proposition 13, but saw its fullest expression in the Thatcher and Reagan tax cuts of the 1980's. Britain's Tories entered office in 1979 with the top rate of income tax at 98%, and left office 18 years later with a top rate of 40%. Indeed, their Labour opponents became electable only after a firm promise not to raise it again. The plain fact is that electorates these days will not stand for it. They recognize, correctly, that governments spend their money less carefully and less efficiently than they can spend it themselves. One of the greatest uses of tax money is to provide pensions. And here a revolution--as important and pervasive as privatization--is sweeping the world. Fully-funded personal pension plans, based on individual savings, are sweeping away the poorly funded public pensions promised by governments. The latter take taxes from the young to support the old. The former invest savings from the young to support themselves when old.

单选题A major reason for conflict in the animal world is territory. The male animal (21) an area. The size of the area is sufficient to provide food for him, his (22) and their offspring. Migrating birds, for example, (23) up the best territory in the order of "first come, first (24) ." The late arrivals may acquire (25) territories, but less food is available, or they are too close to the (26) of the enemies of the species. (27) there is really insufficient food or the danger is very great, the animal will not (28) . In this way, the members of the species which are less fit will not have offspring. When there is conflict (29) . territory, animals will commonly use force, or a (30) of force, to decide which will stay and which will go. It is interesting to note, however, that animals seem to use (31) the minimum amount of force (32) to drive away the intruder. There is usually no killing. In the (33) of those animals which are capable of doing each other great harm, (34) is a system for the losing animal to show the winning animals that he (35) to submit. When he shows this, the (36) normally stops fighting. Animals (especially birds), which can easily escape from conflict seem to have (37) obstacle against killing, and equally no mechanism (38) submission. The losing bird simply flies away. However, if two doves are (39) in a cage, and they start fighting, they will continue to fight until one kills the other. We all think of the dove as a symbol of peace and, in its natural habitat, it is peaceful. But the "peace" mechanism does not (40) in a cage.

单选题Communities in primitive areas where natural ______ is scarce must be resourceful in order to secure adequate nutrition. A. education B. competition C. sustenance D. agriculture

单选题Student journalists artaught how to be when writing in a limited space.

单选题If I had had enough time, I ______ my work.