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Apart from solving the technology challenges, there are a number of other concerns that are yet to be solved such as managing risks and improving efficiency, according to Di.
Another notable achievement was Hedges' 1999 study on changes in the black-white gap in achievement test scores. Analyzing seven probability samples of national populations of adolescents from 1965 to 1996, the study found that in the top-scores distribution, black students performed poorly, indicating they had a severe disadvantage in competing for places in selective colleges and professional schools.
Any building, be it a skyscraper or something more modest, depends on solid foundations. What is not seen is as important as the steel, concrete, bricks and mortar on view. Architects, too, depend on fundamentals, the cornerstone of their philosophy. Buildings are more than just walls and roofs. They must represent and identify with the culture they belong to.
Another survey of 70,000 netizens by the team echoed those results.
Ant Financial said on Tuesday it has no timetable for an initial public offering, amid speculation that the internet financial giant is stalling a planned flotation while it tries to improve its performance and regain market share.
来源：资阳报