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2．语言不是一种孤立的现象，语言是一种社会现象，它的使用、变化和发展受到种种社会因素的制约。语言和社会之间的关系是社会语言学研究的主要内容。语言又是一种人类的心智活动，人是怎样习得母语的，语言信息是如何在人的头脑中被加工、被记忆的，对诸如此类问题的研究构成了心理语言学这一分支。语言学的研究与发展又和语言教学，尤其是外语教学有着密切的关系，语言学理论及研究成果在语言教学中的运用是应用语言学的重要内容。
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Our theory and practice in the area of sentencing have undergone a gradual but dramatic metamorphosis through the years. Primitive man believed that a crime created an imbalance, which could be rectified only by punishing the wrongdoer. Thus, sentencing was initially vengeance-oriented. Gradually, emphasis began to be placed on the deterrent value of a sentence upon future wrongdoing. Though deterrence is still an important consideration, increased emphasis on the possibility of reforming the offender--of returning him to the community a useful citizen--bars the harsh penalties once imposed and brings into play a new set of sentencing criteria. Today, each offender is viewed as a unique individual, and the sentencing judge seeks to know why he has committed the crime and what are the chances of a repetition of the offense. The judge’s prime objective is not to punish but to treat. This emphasis on treatment of the individual has created a host of new problems. In seeking to arrive at the best treatment for individual prisoners, judges must weigh an imposing array of factors. I believe that the primary aim of every sentence is the prevention of future crime. Little can be done to correct past damage, and a sentence will achieve its objective to the extent that it upholds general respect for the law, discourages those tempted to commit similar crimes, and leads to the rehabilitation of the offender, so that he will not run afoul of the law again. Where the offender is so hardened that rehabilitation is plainly impossible, the sentence may be designed to segregate the offender from society so that he will be unable to do any future harm. The balancing of these interacting, and often mutually antagonistic, factors requires more than a good heart and a sense of fair play on the judge’s part, although these are certainly prerequisites. It requires the judge to know as much as he can about the prisoner before him. He should know the probable effects of sentences upon those who might commit similar crimes and how the prisoner is likely to react to imprisonment or probation. Because evaluation of these various factors may differ from judge to judge, the same offense will be treated differently by different judges. The task of improving our sentencing techniques is so important to the nation’s moral health that it deserves far more careful attention than it now receives from the bar and many civic-minded individuals who usually lead even the judges in the fight for legal reform approach this subject with apathy or with erroneous preconceptions. For example, I have observed the sentiment shared by many that, after a judge has sentenced several hundred defendants, the whole process becomes one of callous routine. I have heard this feeling expressed even by attorneys who should know better. Ancient sentences were motivated by ______.
在双代号网络计划中，工作H的持续时间是5天，最早完成时间是第13天，总时差是9天，则工作H的最迟开始时间为第( )天。
The average population density of the world is 47 persons per square mile. Continental densities range from no permanent inhabitants in Antarctica to 211 per square mile in Europe. In the western hemisphere, population densities range from about 4 per square mile in Canada to 675 per square mile in Puerto Rico. In Europe the range is from 4 per square mile in Iceland to 831 per square mile in the Netherlands. Within countries there are wide variations of population densities. For example, in Egypt, the average is 55 persons per square mile, but 1,300 persons inhabit each square mile in settled portions where the land is arable. High population densities generally occur in regions of developed industrialization, such as the Netherlands, Belgium, and Great Britain, or where lands are intensively used for agriculture, as in Puerto Rico and Java. Low average population densities are characteristic of most underdeveloped countries. Low density of population is generally associated with a relatively low percentage of cultivated land. This generally results from poor-quality lands. It may also be due to natural obstacles to cultivation, such as deserts, mountains or malaria-infested jungles, to land uses other than cultivation, as pasture and forested land, to primitive methods that limit cultivation, to social obstacles, and to land ownership systems which keep land out of production. More economically advanced countries of low population density have, as a rule, large proportions of their populations living in urban areas. Their rural population densities are usually very low. Poorer developed countries of correspondingly low general population density, on the other hand, often have a concentration of rural population living on arable land, which is as great as the rural concentration found in the most densely populated industrial countries. The title below that best expresses the main idea of this passage is ______.
某公司资产总额为5 600万元，负债总额2 800万元，其中，本期到期的长期债务和应付票据为2000万元，流动负债800万元，股东权益中股本总额为1 600万元，全部为普通股，每股面值l元，每股现行市价5元。当年实现净利润1 000万元，留存盈利比率为 60%，股利发放均以现金股利支付。公司当年经营现金流量净额为3 000万元，销售收入 (含税)12 000万元。 要求：根据上述资料计算下列指标： (1)产权比率、权益乘数、权益净利率； (2)每股收益、每股股利、每股净资产； (3)股票获利率、股利支付率、股利保障倍数； (4)市盈率、市净率； (5)现金到期债务比、现金流动负债比、现金债务总额比； (6)销售现金比率、每经营现金流量净额、全部资产现金回收率； (7)现金股利保障倍数； (8)若目前市场利率为15%，则公司在理论上还可借入多少资金
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