单选题The other problem that arises from the employment of women is that of the working wife. It has two aspects: that of the wife who is more of a success than her husband and that of the wife who must rely heavily on her husband for help with domestic tasks. There are various ways in which the impact of the first difficulty can be reduced. Provided that husband and wife are not in the same or directly comparable lines of work, the harsh fact of her greater success can be obscured by a genial conspiracy to reject a purely monetary measure of achievement as intolerably crude. Where there are ranks, it is best if the couple work in different fields so that the husband can find some special reason for the superiority of the lowest figure in his to the most elevated in his wife"s. A problem that affects a much larger number of working wives is the need to reallocate domestic tasks if there are children. In The Road to Wigan Pier George Orwell wrote of the unemployed of the Lancashire coalfields. "Practically never.., in a working- class home, will you see the man doing a stroke of the housework. Unemployment has not changed this convention, which on the face of it seems a little unfair. The man is idle from morning to night but the woman is as busy as ever—more so, indeed, because she has to manage with less money. Yet so far as my experience goes the women do not protest. They feel that a man would lose his manhood if, merely because he was out of work, he developed in a "Mary Ann". " It is over the care of young children that this re-allocation of duties becomes really significant. For this, unlike the cooking of fish fingers or the making of beds, is an inescapably time-consuming occupation, and time is what the fully employed wife has no more to spare of than her husband. The male initiative in courtship is a pretty indiscriminate affair, something that is tried on with any remotely plausible woman who comes within range and, of course, with all degrees of tentativeness. What decides the issue of whether a genuine courtship is going to get under way is the woman"s response. If she shows interest the engines of persuasion are set in movement. The truth is that in courtship society gives women the real power while pretending to give it to men. What does seem clear is that the more men and women are together, at work and away from it, the more the comprehensive amorousness of men towards women will have to go, despite all its past evolutionary services. For it is this that makes inferiority at work abrasive and, more indirectly, makes domestic work seem unmanly, if there is to be an equalizing redistribution of economic and domestic tasks between men and women there must be a compensating redistribution of the erotic initiative. If women will no longer let us beat them, they must allow us to join them as the blushing recipients of flowers and chocolates.

单选题One of the main ways to stay out of trouble with government agents is to keep a low______, i. e. stay away from those situations wherein you call attention to yourself.(2007年中国科学院考博试题)

单选题The press demands that politicians______the sources of their income.

单选题It seems that he never knows how to speak in a ______ way.

单选题This ______ was conducted to find out how many people prefer rice.

单选题Violin prodigies, I learned, have come in distinct waves from distinct regions. Most of the great performers in the late 19th and early 20th centuries were born and brought up in Russia and Eastern Europe, I asked Isaac Stern, one of the world's greatest violinists the reason for this phenomenon. "It is very clear," he told me, "They were all Jews (犹太人) and Jews at the time were severely oppressed and ill-treated in that part of the world. They were not allowed into the professional fields, but they were allowed to achieve excellence on a concert stage." As a result, every Jewish parent's dream was to have a child in the music school because it was a passport to the West. Another element in the emergence of prodigies, I found, is a society that values excellence in a certain field to nurture (培育) talent. Nowadays, the most nurturing societies seem to be in the Far East. "In Japan, a most competitive society, with stronger discipline than ours." says Isaac Stem, children are ready to test their limits every day in many fields, including music. When Western music came to Japan after World War Ⅱ, that music not only became part of their daily lives, but it became a discipline as well. The Koreans and Chinese as we know, are just as highly motivated as the Japanese. That's a good thing, because even prodigies must work hard. Next to hard work, biological inheritance plays an important role in the making of a prodigy. J. S. Bach, for example, was the top of several generations of musicians, and four of his sons had significant careers in music.

单选题Walking is Britain's most popular outdoor ______ and is the most pleasant and satisfying way of discovering the countryside. A. pastime B. recreation C. entertainment D. pursuit

单选题Some scientists are dubious of the claim mat organisms______with age as an inevitable outcome of living.

单选题An embarrassing blunder nearly ______ his career before it got off the ground.

单选题We were______whether to buy a new motor-car.

单选题Formulated in 1823, the Monroe Doctrine______that the Americas were no longer open to European colonization.

单选题They moved to Portland in 1998 and lived in a big house,______to the south. (北京大学2006年试题)

单选题By far the most common difficulty in study is simple failure to get down to regular concentrated work. This difficulty is much greater for those who do not work to a plan and have no regular routine of study. Many students muddle along, doing a hit of this subject or that, as the mood takes them, or letting their set work pile up until the last possible moment. Few students work to a set time-table. They say that if they did construct a timetable for themselves they would not keep to it, or would have to alter it constantly, since they can never predict from one day to the next what their activities will be. No doubt some temperaments take much more kindly to a regular routine than others. There are many who shy away from the self-regimentatign of a weekly time-table, and dislike being tied clown to a definite programme of work. Many able students claim that they work in cycles. When they become interested in a topic they work on it intensively for three or four days at a time. On other days they avoid work completely. It has to be confessed that we do not fully understand the complexities of the motivation to work. Most people over 25 years of age have become conditioned to a work routine, and the majority of really productive workers set aside regular hours for the more important aspects of their work. The "tough-minded" school of workers is usually very contemptuous of the idea that good work can only be done spontaneously, under the influence of inspiration. Those who believe that they need only work and study as the fit takes them have a mistaken belief either in their own talent or in the value of "freedom". Freedom from restraint and discipline leads to unhappiness rather than to "self-expression" or "personality development". Our society insists on regular habits, timekeeping and punctuality, and whether we like it or not, if we mean to make our way in society we have to comply with its demands.

单选题 The fitness movement that began in the late 1960s and early 1970s centered around aerobic exercise. Millions of individuals became {{U}}(1) {{/U}} in a variety of aerobic activities, and {{U}}(2) {{/U}} thousands of health spas {{U}}(3) {{/U}} around the country to capitalize on this {{U}}(4) {{/U}} interest in fitness, particularly aerobic dancing for females. A number of fitness spas existed {{U}}(5) {{/U}} to this aerobic fitness movement, even a national chain with spas in most major cities. However, their {{U}}(6) {{/U}} was not on aerobics, {{U}}(7) {{/U}} on weight-training programs designed to develop muscular mass, {{U}}(8) {{/U}}, and endurance in their primarily male {{U}}(9) {{/U}}. These fitness spas did not seem to benefit {{U}}(10) {{/U}} from the aerobic fitness movement to better health, since medical opinion suggested that weight-training programs {{U}}(11) {{/U}} few, if {{U}}(12) {{/U}}, health benefits. In recent years, however, weight training has again become increasingly {{U}}(13) {{/U}} for males and for females. Many {{U}}(14) {{/U}} programs focus not only on developing muscular strength and endurance but on aerobic fitness as well. {{U}}(15) {{/U}}, most physical-fitness tests have usually included measures of muscular strength and endurance, not for health-related reasons, but primarily {{U}}(16) {{/U}} such fitness components have been related to {{U}}(17) {{/U}} in athletics. {{U}}(18) {{/U}}, in recent years, evidence has shown that training programs designed primarily to improve muscular strength and endurance might also offer some health {{U}}(19) {{/U}} as well. The American College of Sports Medicine now {{U}}(20) {{/U}} that weight training be part of a total fitness program for healthy Americans.

单选题The result of deserved-punishment justice is ______.

单选题He saw writers and artists as being important to the state for they could ______ credibility on the regime.

单选题Doctors can easily tell when someone is having a heart attack, but one thing they can't do is to predict an attack before it happens. Even patients who come in for stress tests and get a clean bill of health often end up back in the hospital with a heart attack just days later. But researchers say that may soon change, thanks to a study that used a blood test to detect certain cells that are sloughed off from weakened blood vessel walls. The cells are called circulating endothelial ceils (CECs) and they herald the first stages of a heart attack, according to Dr. Eric Topol, chief academic officer for Scripps Health and lead author of the study published in the journal Science Translational Medicine. Heart experts currently believe that heart attacks start days before a clot actually forms and blocks the flow of blood to the heart, says Topol. The first stages of a heart attack involve a weakening or erosion of the blood vessel walls, which then attracts inflammatory cells that damage the endothelial cells lining the inside of the blood vessels. Eventually, under the immense inflammatory pressure, these cells undergo mutations and start to clump together before sloughing off to float around in the blood. In the study, involving 50 patients who had a heart attack and 44 healthy controls, the heart attack patients had more than four times the concentration of CECs in their blood than the controls. The CECs in the heart patients also looked different from those in the healthy people, often appearing misshapen and large, with multiple nuclei. Researchers first connected CECs to impending heart attacks back in 1999, but Topol's work takes that early investigation further, with a more sophisticated way of identifying CECs in the blood. The current research is also the most indepth study to date of the structural changes that distinguish these cells. "For the first time, we can isolate these cells through techniques that were not available in 1999," says Topol. "They are like a window into the process that underlies an imminent heart attack." The researchers were able to draw on work from the cancer field, where efforts to identify tumor cells that break off from growths and enter the bloodstream are helping to diagnose cancers earlier. Using specific proteins or cell markers that appear exclusively on the surface of blood vessel cells, Topol and his colleagues came up with a molecular profile for CECs that he hopes will form the basis of a more user-friendly test in coming years. They are also in the process of doing extensive genetic tests on the cells in order to construct a dossier on its gene activity. Already, he says, they know that the cells are abnormal, and have more than one nucleus, compared to the single nucleus in normal cells. "These cells are sick," he says. "They are much multinucleated, and have undergone many somatic mutations and have altered cell structure." It's also becoming clear that the CECs start sloughing off the vessel walls a few days to a week or so before fatty plaques rupture and form blood clots, causing a heart attack. That means that testing for CECs can help doctors predict who is on the verge of having an event. This could be especially helpful for the many patients who come into emergency rooms every day, complaining of vague chest-tightening or tingling sensations, but show no signs of the elevated heart enzymes that would indicate a heart attack. These people are often sent home, only to come back several days later with a heart attack—and by that time it's too late, the heart muscle may already be damaged. "It's one of the most common misdiagnoses in American medicine," says Topol, "of the missed signs of heart attack." If the test is validated, it might immediately be used to triage such patients, helping to predict who will have a heart attack in coming days and who is likely suffering from some other ailment, such as severe indigestion or heartburn. But ultimately, Topol hopes to see the technology embedded into a more permanent surveillance device that could keep track of CEC concentrations on a continuous basis. "In the long term, now that we have the molecular signature of the CECs, we could put it in a nanosensor that is embedded into a tiny vein in high risk people who are most vulnerable to having a heart attack, and have that sensor talk to their cell phone, so they get an alert that they might have a heart attack in a few days." That's still a long way away, but the results suggest that the more immediate benefits of checking for CECs might help thousands of people predict, and possibly avoid, their next heart attack.

单选题The BBC dictionary differs from Oxford and Longman in that ______.

单选题Except for {{U}}coarse{{/U}} earthen-wares, which can be made from clay as it is found in the earth, pottery is made from special clays plus other materials mixed to achieve the desired results. A. conventional B. unique C. genuine D. crude