In corporate news, Microsoft Corp. is set to unveil its first batch of Windows phone 7 smart phones.

企业新闻方面，微软公司即将发布首款Windows Phone 7智能电话。

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In corporate news, Google Inc. fell 4.5 percent after European regulators launched an antitrust probe into the online search giant.

公司的新闻，谷歌公司下跌百分之4.5，在欧洲调控者启动针对在线搜索巨人的一反托拉斯调查。

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In corporate news, Lowe's Companies Inc. reported a 19 percent rise in profit on tight cost controls, but the home improvement retailer trimmed its full-year earnings forecast.

企业新闻方面，美国家居建材类零售商洛斯公司(Lowe ' s Companies)公布利润增长19%，主要是因为严格控制运营成本，不过同时下调了全年收益预期。

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In corporate news, Best Buy was 0.7% higher after affirming its 2011 earnings guidance.

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In corporate news, retailers reported February same-store sales that were generally better than expected.

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In corporate news this week, Intel (INTC) became the latest chipmaker to lower its fourth quarter expectations.

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