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制定企业经营战略，可以提高生产经营的( )。
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Decide which of the choices given below would best complete the passage if inserted in the corresponding blanks. Mark the best choice for each blank on your answer sheet. 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 (31) on the individual suggest that children engage in criminal behavior (32) they were not sufficiently penalized for previous misdeeds or that they have learned criminal behavior through (33) with others. Theories focusing on the role of society suggest that children commit crimes in (34) to their failure to rise above their socioeconomic status, (35) as a rejection of middleclass values. Most theories of juvenile delinquency have focused on children from disadvantaged families, (36) the fact that children from wealthy homes also commit crimes. The latter may commit crimes (37) lack of adequate parental control. All theories, however, are tentative and are (38) to criticism. Changes in the social structure may indirectly (39) juvenile crime rates. For example, changes in the economy that (40) to fewer job opportunities for youth and rising unemployment (41) make gainful employment increasingly difficult to obtain. The resulting discontent may in (42) lead more youths into criminal behavior. Families have also (43) changes these years. More families consist of one-parent households or two working parents (44) , children are likely to have less supervision at home (45) was common in the traditional family (46) This lack of parental supervision is thought to be an influence on juvenile crime rates. Other (47) causes of offensive acts include frustration or failure in school, the increased (48) of drugs and alcohol, and the growing (49) of child abuse and child neglect. All these conditions tend to increase the probability of a child committing a criminal act, (50) a direct causal relationship has not yet been established.
商业银行总的流动性需求=负债流动性需求+资产流动性需求。( )
Naturally, in a group of animals as diverse as the snakes, and with so many varied enemies, there are numerous defensive reactions and devices. There is, however, one general pattern of behavior. In the presence of suspected enemy the first reaction is to try to escape observation; if this fails, the next resort is the flight to some inaccessible retreat, but if this is not possible, or is circumvented, various kinds of intimidatory gestures and warning devices are brought into play; in the last resort the snake attacks. This pattern varies with the circumstances; some stages may be omitted or combined unpredictably whilst; some notoriously irascible species may dispense with all the preliminaries and attack almost at once, though seldom or never without some provocation. Amongst the factors that increase aggressiveness are hunger, the mating season and surprise, with the last mentioned the commonest; when hunting for food or for mate, activity and the aggressive instinct are both at their peak. Owing to their poor sense of hearing snakes are very liable to be, quite literally, caught napping and a similar situation arises during their periods of temporary blindness just before sloughing (蜕皮) begins. By far the greatest number of snake-bit accidents result from the unwitting disturbance of resting snakes, and this hazard is much increased with species that are well disguised and whose natural instinct is to trust to this concealment as their principal defense. As well as differences in aggressiveness between individuals of the same species according to the circumstances and conditions, there are also notable differences between species, even closely allied species; and the reports of those who have been attacked may understandably be lacking in objectivity. So it is impossible to forecast, even in outline, how any encounter will develop. The Hamadryad, for example, is usually credited with being amongst the most aggressive of snakes, and there are many accounts of unprovoked attacks, yet on one occasion fourteen men and seven dogs passed and returned within two yards from a nest and no snake was seen although the female, which guards the nest, could not have been far away. The author uses the example in the last paragraph to support his idea that
短边法是一种为各国广泛运用的外汇风险敞口头寸的计量方法，同时为巴塞尔委员会所采用。( )
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