单选题Last month, Mars and Earth were at the closest points in their ______ orbits. The distance between the two worlds was 68 million kilometers.

单选题The explorer lost his way so he climbed to the top of the hill to ______ himself.

单选题The town ______ a monument to the memory of its heroes who had lost their lives during the war.

单选题Newborn calves had eye infections and ______ their heads blindly on the bum wails.

单选题After a few short but interminable seconds, U. S. Astronaut Neil Armstrong placed his foot firmly on the fine-grained surface of the moon. The time was 10.. 56 pm, July 20,1969. A. inseparable B. fast C. indelible D. long

单选题Which of the following is NOT among the four possibilities of why we haven' t been visited?

单选题In the absence of optimism, we are left with nothing but critics, naysayers, and prophets of doom. When a nation expects the worst from its people and institutions, and its experts focus exclusively on faults, hope dies. Too many people spend too much tie looking down rather than up, finding fault with their country's political institutions, economic system, edncational establishment, religious organizations, and—worst of all—with each other. Faultfinding expends so much negative energy that nothing is left over for positive action. It takes courage and strength to solve the genuine problems that afflict every society. Sure, there well always be things that need fixing. But the question is, Do you want to spend your time and energy tearing things down or building them up? The staging of a Broadway show could illustrate my point. Let's say a new production is about to open. A playwright has polished the script, investor have put up the money, and the theater ahs been rented. A director alas been chosen, actors have been auditioned and selected, and the cast has been rehearsing for weeks. Set, lighting, and sound engineers have been hard at work. By the time opening night arrives, nearly a hundred people have labored tirelessly—all working long hours to make magic for their audience. On opening night, four or five critics sit in the audience. If they pan it, the play will probably close in a matter lf days or weeks. If they praise it, the production could go on for a long and successful run. In the end, success or failure might hinge on the opinion of a single person—someone who might be in a bad mood on opening night! What's wrong with this scene? In one sense, nothing. Critics have a legitimate role. The problem arises when we make critics our heroes or put them in control of our fate. When we empower the critic more than the playwright, something is wrong. It is much easier to criticize than to create. When we revere the critics of society, we eventually become a society of critics, and when that happens, there is no mom left for constructive optimism.

单选题Want a glimpse of the future of health care? Take a look at the way the various networks of people involved in patient care are being connected to one another, and how this new connectivity is being exploited to deliver medicine to the patient—no matter where he or she may be. Online doctors offering advice based on standardized symptoms are the most obvious example. Increasingly, however, remote diagnosis (telemedicine) will be based on real physiological data from the actual patient. A group from the University of Kentucky has shown that by using an off-the-shelf PDA (personal data assistance) such as a Palm Pilot plus a mobile phone, it is perfectly feasible to transmit a patient"s vital signs over the telephone. With this kind of equipment in a firs aid kit (急救包), the cry asking whether there was a doctor in the house could well be a thing of the past. Other medical technology groups are working on applying telemedicine to rural care. And at least one team wants to use telemedicine as a tool for disaster response-especially after earthquakes. Overall, the trend is towards providing global access to medical data and expertise. But there is one problem. Bandwidth is the limiting factor for transmitting complex medical images around the world—CT scans being one of the biggest bandwidth consumers. Communications satellites may be able to cope with the short-term needs during disasters such as earthquakes, wars or famines. But medicine is looking towards both the second-generation Internet and third-generation mobile phones for the future of distributed medical intelligence. Doctors have met to discuss computer-based tools for medical diagnosis, training and telemedicine. With the falling price of broadband communications, the new technologies should usher in (迎来) an era when telemedicine and the sharing of medical information, expert opinion. and diagnosis are common.

单选题How did it come ______ that you made a lot of mistakes in your homework?

单选题Self-esteem is what people think about themselves- whether or not they feel valued and when family members have self-respect, pride, and belief in themselves, this high self-esteem makes it possible to cope with the everyday problems of growing up. Successful parent begins by communicating to children that they are loved for no other reasons than just because they exist. Through touch and tone of voice parents tell their infants whether or not they are valued, special, and loved, and it is these messages that form the basis of the child"s self-esteem. When children grow up with love and are made to feel lovable despite their mistakes and failures, they are able to interact with others in a responsible, honest, and loving way. A healthy self-esteem is a resource for coping when difficulties arise, making it easier to see a problem as temporary, manageable, and something from which the individual can emerge. If, however, children grow up without love and without feelings of self-worth, they feel unlovable and worthless and expect to be cheated, taken advantage of, and looked down upon by others. Ultimately their actions invite this treatment, and their self-defeating behavior turns expectations into reality. They do not have the personal resources to handle everyday problems in a healthy way, and life maybe viewed as just one crisis after another. Without a healthy self-esteem they may cope by acting out problems rather than talking them out or by withdrawing and remaining indifferent towards themselves and others. These individuals grow up to live isolated, lonely live, lacking the ability to give the love that they have never received. Self-esteem is a kind of energy, and when it is high, people feel like they can handle anything. It is what one feels when special things are happening or everything is going great. A word of praise, a smile, a good grade on a report card, or doing something that creates pride within oneself can create the energy. When feelings about the self have been threatened and self-esteem is low, everything becomes more of an effort. It is difficult to hear, see, or think clearly, and others seem rude, inconsiderate, and rough. The problem is not with others, it is with the self, but often it is not until energies are back to normal that the real problem is recognized. Children need help understanding that their self-esteem and the self-esteem of those they interact with have a direct effect on each other. For example, a little girl comes home from school and says, "I need loving because my feelings got hurt today." The mother responds to child"s need to be held and loved. If instead the mother said she was too busy to hold the little girl, the outcome would have been different. The infant"s self-esteem is totally dependent on family members, and it is not until about the time the child enters school that outside forces contribute to feelings about the self. A child must also learn that a major resource for a healthy self-esteem comes from within. Some parents raise their children to depend on external rather than internal reinforcement through practices such as paying for good grades on report cards or exchanging special privileges for good behavior. The child learns to rely on others to maintain a high self-esteem and is not prepared to live in a world in which desirable behavior does not automatically produce a tangible reward such as a smile, money, or special privileges. Maintaining a healthy self-esteem is a challenge that continues throughout life. One family found that they could help each other identify positive attitudes. One evening during an electric storm the family gathered around the kitchen table, and each person wrote down two things that they liked about each family member. These pieces of paper were folded and given to the appropriate person, who one by one opened their special messages. The father later commented, "It was quite an experience, opening each little piece of paper and reading the message. I still have those gifts, and when I"ve had a really bad day, I read through them and ! always come away feeling better." The foundation of a healthy family depends on the ability of the parents to communicate message of love, trust, and self-worth to each child. This is the basis on which self-esteem is built, and as the child grows, self-esteem is reflected in the way he or she interacts with others.

单选题The opposition leader accused government ministers of ______ the statistics to suit themselves.

单选题Why are great TV networks, ABS, CBS and NBC mentioned in the passage?

单选题People thought: Hey, eat a carp and you will be taking in A what it is that gives you these B fish their long C life-span . Of course, it D hasn't done a lot of good for these carp.

单选题Her own interests as a mother (brought into) play by her (concern over) the education and welfare of her children, the city (in which) they lived, (and such) municipal facilities as playgrounds, schools and parks.

单选题Americans are people obsessed with child-rearing. In their books, magazines, talk shows, parent training courses, White House conferences, and chats over the back fence, they endlessly debate the best ways to raise children. Moreover, Americans do more than debate their theories; they translate them into action. They erect playgrounds for the youngsters' pleasure, equip large schools for their education, and train skilled specialists for their welfare. Whole industries in America are devoted to making children happy, healthy and wise. But this interest in childhood is relatively new. In fact, until very recently people considered childhood just a brief, unimportant prelude to adulthood and the real business of living. By and large they either ignored children, beat them, or fondled them carelessly, much as we would amuse ourselves with a litter of puppies. When they gave serious thought to children at all, people either conceived of them as miniature adults or as peculiar, unformed animals. Down through the ages the experiences of childhood have been as varied as its duration. Actions that would have provoked a beating in one era elicit extra loving care in another. Babies who have been nurtured exclusively by their mothers in one epoch are left with day-care workers in another. In some places children have been trained to straddle unsteady canoes, negotiate treacherous mountain passes, and carry heavy bundles on their heads. In other places they have been taught complicated piano concerti and long multiplication tables. But diverse as it has been, childhood has one common experience at its core and that is the social aspect of nurture. All children need adults to bring them up. Because human young take so long to become independent, we think that civilization may have grown up around the need to feed and protect them. Certainly, from the earliest days of man, adults have made provision for the children in their midst.

单选题The people were tired of reform crusades; they wanted no part of an idea that might ttirn into a______. A. respite B. reality C. mistake D. cause

单选题Professor Wu traveled and lectured throughout the country to ______ education and professional skills so that women could enter the public world.

单选题Taken together, income, occupation, and education are good measures of people's social standing. Using a layered model of stratification, most sociologists describe the class system in the United States as divided into several classes: upper, upper middle, middle, lower middle, and lower class. Each class is defined by characteristics such as income, occupational prestige, and educational attainment. The different groups are arrayed along a continuum with those with the most money, education, and prestige at the top and those with the least at the bottom. In the United States, the upper class owns the major share of corporate and personal wealth; it includes those who have held wealth for generations as well as those who have recently become rich. Only a very small proportion of people actually constitute the upper class, but they control vast amounts of wealth and power in the United States. They exercise enormous control throughout society. Most of their wealth is inherited. Despite social myths to me contrary, the best predictor of future wealth is the family into which you are born. Each year, the business magazine Forbes publishes a list of the "Forbes 400" — the four hundred wealthiest families and individuals in the country. Of all the wealth represented on the Forbes 400 list, more than half is inherited. Those on the list who could be called " self-made" were not typically of modest origins; most inherited significant assets(Forbes, 1997; Sklar and Collins, 1997). Those in the upper class with newly acquired wealth are known as the nouveau niche. Although they may have vast amounts of money, they are often not accepted into "old rich" circles. The upper middle class includes those with high incomes and high social prestige. They tend to be well-educated professionals or business executives. Their earnings can be quite high indeed—successful business executives can earn millions of dollars a year. It is difficult to estimate exactly how many people fall into this group because of the difficulty of drawing lines between the upper, upper middle, and middle class. Indeed, the upper middle class is often thought of as "middle class" because their lifestyle sets the standard to which many aspire, but this lifestyle is simply beyond the means of a majority of people in the United States. The middle class is hard to define; in part, being "middle class" is more than just economic position. By far the majority of Americans identity themselves as middle class even though they vary widely in lifestyle and in resources at their disposal. But the idea that the United States is an open-class system leads many to think that the majority have a middle-class lifestyle because, in general, people tend not to want to recognize class distinctions in the United States. Thus, the middle class becomes the ubiquitous norm even though many who call themselves middle class have a tenuous hold on this class position. In the hierarchy of social class, the lower middle class includes workers in the skilled trades and low-income bureaucratic workers, many of whom may actually define themselves as middle class. Examples are blue-collar workers(those in skilled trades who do manual labor)and many service workers, such as secretaries, hairdressers, waitresses, police, and firefighters. Medium to low income, education, and occupational prestige define the lower middle class relative to the class groups above it. The term " lower" in this class designation refers to the relative position of the group in the stratification system, but it has a pejorative sound to many people, especially to people who are members of this class. The lower class is composed primarily of the displaced and poor. People in this class have little formal education and are often unemployed or working in minimum-wage jobs. Forty percent of the poor work; 10 percent work year-round and full time—a proportion that has generally increased over time. Recently, the concept of the underclass has been added to the lower class. The underclass includes those who have been left behind by contemporary economic developments. Rejected from the economic system, those in the underclass may become dependent on public assistance or illegal activities.

单选题The concept of a loyal opposition—the ______ of modern democracy—rarely prevails and, much more frequently, opposition is equated with treason and ruthlessly suppressed.