题干

下列各句中没有语病的一句是(  )

A:像《中国达人秀》这类“零门槛”的选秀节目,让拥有才华和梦想的任何一个普通人,都可以展示天赋和潜能.也让我们懂得平凡人成就自我的关键在于是否相信梦想,相信奇迹。

B:这次来访的外国俱乐部足球队让我们青年队员上了很好的一课,恐怕他们终生难忘这次比赛。

C:宋代以来,欧阳修的《醉翁亭记》、苏轼的《石钟山记》、刘基的《卖柑者言》等作品有积极的思想倾向,因而文笔清新,耐人寻味。

D:报告指出,中国及印度的一些跨国公司眼下正不遗余力地开拓国际市场,新加坡、俄罗斯等则紧随其后,国际市场的竞争格局在发生变化。

上一题 下一题 0.0难度 选择题 更新时间:2012-11-06 07:13:23

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D

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    CHICAGO- Have you ever worked on your laptop computer with it sitting on your lap, heating up your legs? If so, you might want to rethink that habit from now on. Doing it a lot can lead to “toasted skin syndrome (症状)”, an unusual-looking spotted skin condition caused by long-term heat exposure (暴露), according to medical reports.
    In one recent case, a 12-year-old boy from California developed a skin discoloration on his left lap after playing computer games a few hours every day for several months. “He recognized that the laptop got hot on the left side; however, he did not change its position, ” Swiss researches reported in an article published Monday in the journal Pediatrics.
    Another similar case is a Virginia law student who needed treatment for the spotted darkening on her leg. Dr. Kimberley Salkey, who treated the young woman, learned the student spent about six hours a day working with her computer placed on her lap. As Dr. Salkey later learnt, the temperature under the laptop could reach 51 degrees. That case, from 2007, is one of 10 laptop-related cases reported in medical journals in the past six years.
    The condition can also be caused by overuse of heating pads (垫子) and other heat sources that usually aren't hot enough to cause burns. It's generally harmless but can also cause such permanent (永久的) skin darkening. In very rare cases, it can cause damage leading to skin cancers, said the Swiss researchers, Drs. Andreas Arnold and Peter Itin from University Hospital Basel. They do not mention any skin cancer cases linked to laptop use, but suggest, to be safe, placing a carrying case under the laptop if you have to hold it on your lap.
    Dr. Kimberley Salkey said that under the microscope, the affected skin is similar to skin damaged by long-term sun exposure.
    Major producers including Apple and Dell warn against placing laptops on laps or exposed skin for long periods of time because of the risks for burns. In the past, “toasted skin syndrome” has happened to workers whose jobs require being close to a heat source, including bakers and glass blowers, and in people who gathered near hot stoves to stay warm.
    Dr. Anthony J. Mancini, chief at Children's Memorial Hospital in Chicago, said that it's unlikely that computer use would lead to cancer since it's so easy to avoid close skin contact (接触) with laptops.