单选题The most (distinctive) change in American (values) of the last twenty years (has been) an increasing emphasis (in) the pursuit of self-fulfillment.A. distinctiveB. valuesC. has beenD. in

单选题A recent report on population trend conducted by the think (1) of the World watch Institute identifies signs of slowing growth in some countries. It says populations in 32 countries—all in the industrialized world—have stabilized because of declining birthrates. But in a handful of developing countries where population is slowing, the cause isn't something to (2) , because more people are dying. This trend is called "population fatigue", and it's beginning in many of the developing countries that have experienced (3) birthrates and sharp population growth for several decades. Governments in these countries are now having trouble dealing with feeding, housing and educating an increasing number of children, (4) at the same time confronting the falling water (5) , deforestation and soil erosion that rapid population growth brings. In these countries any new threat—infectious disease, drought or famine—can become a (6) crisis. AIDS is a case (7) . WHO estimates calculate that one-quarter of the adult population of Zimbabwe and Botswana are infected with the AIDS virus, (8) , these countries stands to lose at least one-quarter of their labor force in the next decade from AIDS alone, a situation (9) since the yellow fever swept through Europe in the 14'h century. Social unrest is also increasing in these countries. One example is the (10) conflict between the Tutsis and the Hutus in Rwanda, where population pressures reduced cropland (11) where it could no longer feed those who lived on it. Demands on the world fisheries and shared water resources are likely to spark similar conflicts. Already the waters of the Nile are so heavily used that little reaches the Mediterranean, so any increase in demand or (12) in allocation will also increase tensions. The bottom line is that human population growth is (13) to slow one way or the other. Developing societies will either recognize problems (14) the horizon and act to encourage smaller families — or unchecked births will have their (15) in rising death rates.

单选题Teachers and nurses who deal with children are Uobliged/U to report cases of suspected child abuse to authorities.

单选题(Comparing) money with friends, I prefer the latter (more), (for) real friends are not easy (to come by), and we must value their real friendship.

单选题As home prices continue to decline and loan defaults mount, federal regulators are bracing for dozens of American banks to fail over the next year. But after a large mortgage lender in California collapsed late Friday, Wall Street analysts began posing two crucial questions: Just how many banks might falter? And, more urgently, which one could be next? The nation"s banks are in far less danger than they were in the late 1980s and early 1990s, when more than 1,000 federally insured institutions went under during the savings-and-loan crisis. The debacle , the greatest collapse of American financial institutions since the Depression, prompted a government bailout that cost taxpayers about $125 billion. But the troubles are growing so rapidly at some small and midsize banks that as many as 150 out of the 7,500 banks nationwide could fail over the next 12 to 18 months, analysts say. Other lenders are likely to shut branches or seek mergers. "Everybody is drawing up lists, trying to figure out who the next bank is, No. 1, and No. 2, how many of them are there," said Richard X. Bove, the banking analyst with Ladenburg Thalmann, who released a list of troubled banks over the weekend. "And No. 3, from the standpoint of Washington, how badly is it going to affect the economy?" Many investors are on edge after federal regulators seized the California lender, IndyMac Bank, one of the nation"s largest savings and loans, last week. With $32 billion in assets, IndyMac, a spinoff of the Countrywide Financial Corporation, was the biggest American lender to fail in more than two decades. Now, as the federal administration grapples with the crisis at the nation"s two largest mortgage finance companies (住宅信贷公司), Fannie Mae and Freddie Mac, a rush of earnings reports in the coming days and weeks from some of the nation"s largest financial companies are likely to provide more gloomy reminders about the sorry state of the industry. The future of Fannie Mae and Freddie Mac is vital to the banks, savings and loans and credit unions, which own $1.3 trillion of securities issued or guaranteed by the two mortgage companies. If the mortgage giants ever defaulted on those obligations, banks might be forced to raise billions of dollars in additional capital.

单选题His constant attempts to diminish his colleagues" achievements eventually caused his dismissal.

单选题The Public Broadcasting System is supported by ______from foundations and other sources.

单选题Many people, when ill, see their doctors and ask them to _____ something that will make them feelbetter.

单选题It (is) a well-known proverb to all--All (which) (glitters) is not (gold).A. isB. whichC. glittersD. gold

单选题There is no question that raising teenagers is a challenge no matter how many parents are living in the home. Particularly challenging are the ages between 12 and 16,which are marked by mood swings, defiant attitudes, and attempts to push the limits set by their parents. During this time, teens are trying their hardest to gain adult independence, which is a normal part of the natural growing process. So, we accept this as a time to help them learn lessons and find their way to adulthood, despite the fact that it sometimes makes us feel like we are raising aliens from another planet! Two parents in the household can be a definite plus during these years, especially if both are healthy and loving. In single parent homes, a healthy and loving atmosphere is also a key ingredient to raising responsible teens. Also, teens are often masters at pitting (使人相斗)their parents against one another, so when they have divorced parents living in different households, it can be extra difficult to co-parent with effectiveness. What can single parents do to make the teens in their homes more pleasant? The suggestion is to create realistic and enforceable boundaries. Let your kids know that you will negotiate boundaries every six months, for instance. Let them come up with ideas so that they will be more apt to comply. The topics to discuss may be such as how they spend their time after school, how they spend time with their friends and how should be their dress code and their hairstyles, and so on. However, when it comes to alcohol, drugs, smoking and other obvious health risks, there should be no negotiation at all. I never give them permission to drink—and that was final. Let them know they are responsible for their own behavior and should take themselves out of situations that could lead to trouble. A week before your six-month meeting with your teen, call the other parent and talk about how things have been going in each household. Most of the time, there is a wide range of healthy variations in parenting styles. Explain to your teens that when they enter the workforce, they will work with different supervisors, so operating under different household guidelines should be respected and will be good training for their future.

单选题(The age of) a geological sample can (be estimated) from the ratio of radioactive to nonradioactive carbon (present) in the object (is examined).

单选题A: I heard you've had your book published. Congratulations!B: ______

单选题______ negotiations must take place before any agreement can be reached.

单选题A: How about the food I ordered? I've been waiting for 20 minutes already. B: ______

单选题If the letter (to be mailed) was placed on the (writing) table an hour (ago), it is certain (will be) there now.A. to be mailedB. writingC. agoD. will be

单选题A few years ago, when environmentalists in Washington State began agitating to rid local dumps of toxic old computers and televisions, they found an unexpected ally: Hewlett-Packard Co. Teaming up with greens and retailers, hp took on IBM, Apple Computer, and several major TV manufacturers, which were resisting recycling programs because of the costs. Aided by hp's energetic lobbying, the greens persuaded state lawmakers to adopt a landmark program that forces electronics companies to foot the bill for recycling their old equipment. "This bill puts our market-based economy to work for the environment," said Washington Governor Christine O. Gregoire as she signed the plan into law on Mar 24. The movement to recycle electronic refuse, or "e-waste," is spreading across the nation, and so is hp's clout. The company helped the greens win a big battle in Maine, In 2004 when the state passed the nation's first e-waste "take-back" law. Washington followed suit. Now, Minnesota and New Jersey are preparing to act, and 19 other states are weighing legislation. Activists hope to banish high-tech junk from landfills and scrub the nation's air and water of lead, chromium, mercury, and other toxins prevalent in digital debris, hp's efforts have made it the darling of environmentalists. They say take-back laws are more effective at getting digital junk recycled than point-of-sale fees, which tax consumer electronics products to fund state-run recycling programs. They're also pleased because effective programs in the U. S. reduce the likelihood that the products will be shipped to less developed countries and disassembled under unsafe conditions. But hp's agenda isn't entirely altruistic. Take-back laws play to the company's strategic strengths. For decades the computer maker has invested in recycling infrastructure, a move that has lowered its production costs, given it a leg up in the secondary market for equipment, and allowed it to build a customer service out of "asset management," which includes protection of dam that might remain on discarded gear. In 2005, hp recycled more than 70 000 tons of product, the equivalent of about 10% of company sales and a 15% increase from the year before. And it collected more than 2.5 million units (in excess of 25 000 tons) of hardware to be refurbished for resale or donation. No other electronics maker has a resale business on this scale. But the others may soon wish to emulate hp. "We see legislation coming," says David Lear, hp's vice-president for corporate, social, and environmental responsibility. "A lot of companies haven't stepped up to the plate.... If we do this right, it becomes an advantage to us./

单选题 Many theories concerning the causes of juvenile delinquency (青少年犯罪) focus either on the individual or on society as the major contributing influence. Theories{{U}} (56) {{/U}}on the individual suggest that children engage in criminal behavior{{U}} (57) {{/U}}they were not sufficiently penalized for previous misdeeds or that they have learned criminal behavior through{{U}} (58) {{/U}}with others. Theories focusing on the role of society suggest that children commit crimes in response to their failure to rise above their socioeconomic status{{U}} (59) {{/U}}as a rejection of middle-class values. Most theories of juvenile delinquency have focused on children from disadvantaged families, {{U}}(60) {{/U}}the fact that children from wealthy homes also commit crimes. The latter may commit crimes for lack of adequate parental control. All theories, however, are tentative and are{{U}} (61) {{/U}}to criticism. Changes in the social structure may indirectly{{U}} (62) {{/U}}juvenile crime rates. Families have also{{U}} (63) {{/U}}changes these years. More families consist of one parent households or two working parents;{{U}} (64) {{/U}}, children are likely to have less supervision at home,{{U}} (65) {{/U}}was common in the traditional family{{U}} (66) {{/U}}. This lack of parental supervision is thought to be an influence on juvenile crime rates. Other{{U}} (67) {{/U}}causes of offensive acts include frustration or failure in school, the increased{{U}} (68) {{/U}}of drugs and alcohol, and the growing{{U}} (69) {{/U}}of child abuse and child neglect. All these conditions tend to increase the probability of a child committing a criminal act,{{U}} (70) {{/U}}a direct causal relationship (因果关系) has not yet been established.

单选题Why should I be against measures attempting to eradicate the problem altogether?

单选题Meteorologists are {{U}}at odds{{/U}} over the workings of tornadoes.