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问题 单项选择题

女性，59岁。慢性咳喘20年。近5年来动则气急，并常有尿少、下肢浮肿。3天前感冒自服感冒通后热退，但气急、咳嗽加重，昨夜因失眠服地西泮（安定）后入睡，今晨家人见其呼之不应，送来急诊。体检见神志恍惚，呼吸浅速，频率28次/min，紫绀明显。两肺散在干湿啰音。呼吸空气条件下动脉血气分析示pH7.29，PaCO210.5kPa（80mmHg），PaO26.1kPa（46mmHg）。该患者应用以上处理的同时，为降低呼吸功，重点需要解决的问题是（）

A.舒张支气管，降低气道阻力

B.利尿，减轻肺间质可能存在的水肿

C.唤醒神志，改善咳嗽排痰功能

D.改善缺氧，降低肺动脉压和肺血管阻力

E.纠正电解质紊乱和酸中毒，改善呼吸肌力

答案

参考答案：A

解答题
先化简，再求值：a（a-2b）+2（a+b）（a-b）+（a+b）2，其中a=-
2
2
，b=2．
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填空题
     Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need
A. occurred    B. extended      C. tragedy       D. fined       E. ignore
F.  concerns   G. suspension     H. inevitably     I. illegal        J. must-have
     The launch of Apple's iPhone 4s tempted thousands of buyers to its two outlets in Beijing on the cold winter night of Jan 12th. But the size of the crowds brought a sudden __(1)__ of sales of the iPhone 4s on the morning of Jan 13th and one store in Beijing didn't open at all, because the growing crowd of eager Apple followers created safety__(2)__.
     This is not the first time Apple's marketing strategy(策略) has caused such trouble among the buying public, for similar trouble __(3)__  in January last year when the first release launch of the iPhone 4 was made.
Apple's clever marketing has made the company's products __(4)__lifestyle accessories(附件) for many, but this strategy will __(5)__ result in mass rushes and disturbances and if it continues with this marketing strategy, it is only a matter of time before one of its product launches ends in __(6)__.
     Intentionally fuelling demand by limiting a product release to create a state of panic among consumers, who fear they may not get their hands on their objects of desire, is not only immoral but also__(7)__.
    Apple should take the lessons from the experience of Unilever(联合利华). The giant consumer goods company was __(8)__  2 million yuan in May 2011 by the Chinese government for repeatedly spreading rumors(谣言) of price rises.
    Apple has the ability to make it easier for consumers to order new products online or by telephone. Apple cannot afford to__(9)__the Chinese market, so it has no excuse for not changing its strategy so as to avoid such incidents in the future.
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