题目内容
基本分析法的优点是能够比较全面把握证券价格的基本走势，应用起来简单，缺点主要是对短线投资者的指导作用比较弱，预测的精确度相对较低。因此，主要适用于周期性相对比较长的证券价格预测以及相对成熟的证券市场和预测精确度要求不高的领域。 ()
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But the question of who actually left the South has never been investigated in detail. Although numerous investigations document a flight from rural southern areas to southern cities prior to the Great Migration, no one has considered whether the same migrants then moved on to northern cities. In 1910 over 600,000 Black workers, or ten percent of the Black work force reported themselves to be engaged in "manufacturing and mechanical pursuits", the federal census category roughly including the entire industrial sector. The Great Migration could easily have been made up entirely of this group and their families. It is perhaps surprising to argue that an employed population could be tempted to move, but an explanation lies in the labor conditions then prevalent in the South.
About thirty-five percent of the urban Black population in the South was engaged in skilled trades. Some were from the old artisan class of slavery—blacksmiths, masons, carpenters—which had a monopoly of certain trades, but they were gradually being pushed out by competition, mechanization, and obsolescence. The remaining sixty-five percent, more recently urbanized, worked in newly developed industries—tobacco, lumber, coal and iron manufacture, and railroads. Wages in the South, however, were low, and Black workers were aware, through labor recruiters and the Black press, that they could earn more even as unskilled workers in the North than they could as artisans in the South. After the boll weevil infestation, urban Black workers faced competition from the continuing influx of both Black and White rural workers, who were driven to undercut the wages formerly paid for industrial jobs. Thus, a move north would be seen as advantageous to a group that was already urbanized and steadily employed, and the easy conclusion tying their subsequent economic problems in the North to their rural backgrounds comes into question.
Notes:
boll weevil infestation 棉铃虫蔓延。cessation中止，停止。mason 泥瓦匠。recruiter 招募者。influx流入，涌入。
The author indicates explicitly that which of the following records has been a source of information in her investigation？
某投资者按1000元的价格购人年利率为8%的债券，持有2年后以1060元的价格卖出，那么该投资者的持有期收益率为()。
在岗职工工资总额与在岗职工平均工资排名没有变化的省、市有()个
2006年全国在岗职工平均工资为()元
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