单选题Many theories concerning the causes of juvenile delinquency (crimes committed by young people) focus either on the individual or on society as the major contributing influence. Theories (21) on the individual suggest that children engage in criminal behavior (22) they were not sufficiently penalized for previous misdeeds or that they have learned criminal behavior through (23) with others. Theories focusing on the role of society suggest that children commit crimes in (24) to their failure to rise above their socioeconomic status, (25) as a rejection of middle-class values. Most theories of juvenile delinquency have focused on children from disadvantaged families, (26) the fact that children from wealthy homes also commit crimes. The latter may commit crimes (27) lack of adequate pa- rental control. All theories, however, are tentative and are (28) to criticism. Changes in the social structure may indirectly (29) juvenile crime rates. For example, changes in the economy that (30) to fewer job opportunities for youth and rising unemployment (31) make gainful employment increasingly difficult to obtain. The resulting discontent may in (32) lead more youths into criminal-behavior. Families have also (33) changes these years. More families consist of one-parent households or two working parents; (34) , children are likely to have less supervision at home (35) was common m the traditional family structure.

单选题The directors of a company are chosen at the company's annual general meeting.

单选题This video may be freely reproduced ______ commercial promotion or sale. A. as for B. except for C. thanks to D. up to

单选题The ______ is just around the comer and you won't miss it．A．bicycle's shopB．bicycle shopC．bicycles shopD．bicycles' shop

单选题Aging poses a serious challenge to OECD (Organization of Economic Co-operation and Development) countries, in particular, how to pay for future public pension liabilities. And early retirement places an (1) burden on pension financing. There is no easy solution, but (2) retirement could help. Early retirement may seem like a worthy individual goal, but it is a socially (3) one, and makes the present public pension system difficult to sustain for long. The (4) reason is that more people are retiring early and living longer. That means more retirees depending on the (5) of those in work for their income. The (6) is worrying. In the next 50 years, low fertility rates and (7) life expectancy in OECD countries will cause this old-age dependency rate to roughly double (8) size. Public pension payments, which afford 30% ～ 80% of total retirement incomes in OECD countries, are (9) to rise, on average, by over three percentage points in GDP and by as much as eight percentage points in some countries. (10) is the pressure on pension funds that there is a danger of today's workers not getting the pensions they expected or felt they (11) for. Action is needed, (12) simply aiming to reduce the (13) (and cost) of public pensions, or trying to (14) the role of privately funded pensions within the system, though necessary steps, may be (15) to deal with the dependency challenge. After years of (16) early retirement schemes to avoid (17) and higher unemployment, many governments are now looking (18) persuading people to stay in work until they are older. Surely, the thinking goes, if we are healthier now and jobs are physically less (19) and unemployment is down, then perhaps the (20) rate should rise anew.

单选题I remember ______ her at a party last weekend. A. to meet B. meeting C. having met D. to have

单选题Because of its potential for cutting costs, the distribution step in the marketing process is receiving more attention. Distribution involves warehousing, transporting and keeping inventory of manufactured products. Take an everyday product like fabric softener. After it comes off the assembly line, it's packed in cartons and tracked to warehouses around the country. When orders come in from retailers, the fabric softener is delivered to supermarket shelves. This is distribution. Probably the most crucial area for controlling costs is inventory. Companies don't want to overproduce and have unsold stock of their product piled up in warehouses. Wholesale companies and large retail chains employ several techniques for inventory control. This is where the computer revolution really had an impact. Computerized information systems give precise and up-to-date accounts of inventory on hand. And the field of distribution offers good entry- level jobs for persons with training in computer programming or data processing. Overseeing the whole area of distribution is the distribution manager. This job is becoming increasingly important and can lead to an executive position.

单选题Speaker A: Hello. Is that Mr. Johnson?Speaker B: ______

单选题He hated pettiness ______ he did superficial quotation． A．as many as B．as much as C．as many D．much as

单选题The young surgeon ______ his first operation successfully.

单选题More American mothers than ever are working, and more workers are mothers. Yet their march into the world of paid work continues to cause suspicion. One recent survey found that 48 percent of Americans believe that preschoolers suffer if their mothers work, while another found that 42 percent of employed parents think that working mothers care more about succeeding at work than meeting their children's needs. All mothers deserve our support--those who care for children at home and those who have joined the work force. But many working mothers continue to believe that they are shortchanging (少找钱)their children. They shouldn't. Research tells us that kids do just fine when mothers work. Suzanne Bianchi a scientist of the University of Maryland, has found that mothers today spend as much if not more time with their children than they did in 1965, even though the percentage of mothers who work rose from 35 percent to 71 percent. Then there are the obvious financial benefits. For many children, these earnings are the difference between living in poverty—or out of it. The kids are all right. Studies conducted by the University of Michigan have consistently demonstrated that a child's social or academic competence does not depend on whether a mother is employed. In my research four out of five children (nine out of ten in single parent families) told me that having a working mother was their preferred arrangement. My study found that children with working mothers are no more likely to drop out, take drugs, break the law, or experiment with sex prematurely than children with non-employed mothers. Children have taken their mothers' example to heart. Ninety percent of the young women I interviewed said they hoped to combine work with motherhood, while two-thirds of the men said they wanted to share parenting and work. Sadly, children support working mothers more than we do as a society. Parental leave and child-care benefits in the United States remain inadequate, particularly when compared to what's offered in other countries. Children thrive when their mothers have satisfying, well-paid jobs when they can count on other caretakers to share the load. The challenge facing us is thus not whether good workers can also be good mothers, but whether we can create the conditions that enable working mothers and fathers to be good parents.

单选题A: ______B: Yes. I would like the beef steak.

单选题As the details of the project were rather vague, we decided to______the proposal.

单选题She has the impression that many people ______ her.