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2009年11月20日，山东电网销售电价平均提价标准为每千瓦时3.28分。业内人士分析认为，工业大省山东正借此次电价调整，对产业结构调整升级形成倒逼机制。因为提高电价将会

①增加企业的生产成本                   ②调节企业的生产规模  

③促使企业依靠科技进步实现节能减排     ④有利于促使企业转变发展方式

A．①②③

B．①②④

C．①③④

D．①②③④

答案

答案：C

填空题

一部电话机需要197元，李叔叔为单位购买22部电话机，大约需要带______元．
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填空题

Harvard University, breaking with a major trend in college admissions, will eliminate its early admissions program next year, with university officials arguing that such programs put low-income and minority applicants at a distinct disadvantage in the competition to get into selective universities.
For three decades Harvard has offered a particular form of early admissions, in which students who are accepted early still have the freedom to go elsewhere. Various forms of early admissions are offered by hundreds of colleges and universities, with many requiring applicants to commit upfront(预先) to attending the university if offered early admission.
The popularity of the procedure grew significantly in the 1990s, as colleges tried to increase their competitive advantage by locking in p candidates early. But at Harvard and many other universities officials have grown concerned about that early admissions present a major obstacle to low-income and working-class students. Such students have also been hurt by steep tuition increases and competition with students from wealthy families who pour thousands of dollars into college consultants and tutoring.
Under binding early admission programs, students have to commit to a college long before they know how much aid they will be offered; whereas students who apply for admission ill the regular cycle are able to compare financial-aid offerings from various colleges before making up their minds in April. Under Harvard’s early admissions program, students do not have to decide until May 1 whether to accept an admission offer. Even so, many potential applicants did not understand the distinction between Harvard’s program and those that require an upfront commitment and were discouraged from applying.
Under Lawrence H.Summers, the Harvard president who left office in June, the university took a number of steps to make itself more accessible to poor and working-class students. The idea of abandoning early admission was developed after Derek Bok became interim president. Early admission will remain in effect in the current academic year, which is already under way.

The procedure of early admission grew popular because it helped colleges to secure the recruitment of ______.
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