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以平价购买到期一次还本付息的债券，其到期收益率和票面利率相等。（）
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患者于体位改变时咳嗽加剧，痰量增多，可能的诊断是( )
某公司准备投资购买一种股票。现有A公司股票和B公司股票可供选择。已知A公司股票现行市价为每股28元，上年每股股利为0.50元，预计以后每年以6%的增长率增长。B公司股票现行市价为每股1.8元，上年每股股利为0.15元，股利分配政策将一贯坚持固定股利政策。某公司所要求的投资必要报酬率为8%。[要求]（1）利用股票估价模型，分别计算A、B公司股票价值。（2）代甲企业作出股票投资决策。
Some people ought to defend the workaholic.These people are unjustly accused, abused, and defamed -- often termed sick or morbid or on the border of pathology. About 30% of American business and commerce is carried on the shoulders of workaholics. The ratio might exist in art and science too.Workaholics are the achievers, the excelers. There is a national conspiracy against excellence and undue admiration of commonness and mediocrity. It is as if we are against those who make uncommon sacrifices because they enjoy doing something.Some famous psychologists say that the workaholic has an inferiority complex which leads to overcompensation. This is certainly not the case. Inferiority, or low esteem, describes laziness more accurately than it describes dedication.We do not seem to realize that very little excellence is achieved by living a well-balanced life. Edison, Ford, Einstein, Freud all had single-minded devotion to work whereby they sacrificed many things, including family and friendship. The accusation is made that workaholics bear guilt by not being good parents or spouses. But guilt can exist in the balanced life also. Think how many "normal" people and middle-ages who have never done anything well -- they are going to settle for less than what they could have become. According to this passage,().
In an interview last month, Frank Church, chairman of the Senate committee which is investigating the CIA, issued an oblique but impassioned warning, that the technology of eavesdropping had become so highly developed that Americans might soon be left with "no place to hide". That day may have arrived. Newsweek has learned that the country’s most secret intelligence operation, the National Security Agency, already possesses the computerized equipment to monitor nearly all overseas telephone calls and most domestic and international printed messages.The agency’s devices monitor a great deal of telephone circuits, cable lines and the microwave transmissions that carry an increasing share of both spoken and written communications. Computers are programed to watch for "trigger" words or phrases indicating that a message might interest intelligence analysis, when the trigger is pulled, entire messages are tape-recorded or printed out.That kind of eavesdropping is, however, relatively simple compared with the breakthroughs that lie ahead in the field of snoopery. Already it is technically feasible to "bug" an electric typewriter by picking up its feeble electronic emissions from a remote location and then change them into words. And some scientists believe that it may be possible in the future for remote electronic equipment to intercept and "read" human brain waves.Where such capabilities exist, so too does the potential for abuse. It is the old story of technology rushing forward with some new wonder, before the men who supposedly control the machines have found how to prevent the machines from controlling them. Which is the best title for the passage()
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