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赵女士，诊为慢性呼吸衰竭，近日因咳嗽、咳痰、气促明显，又出现神志不清、发绀、多汗，血气分析PaO₂50mmHg，PaCO₂62mmHg，应给予患者（）

A.高浓度、高流量持续吸氧

B.高浓度、高流量间歇给氧

C.低浓度、低流量持续吸氧

D.低浓度、低流量间歇吸氧

E.酒精湿化给氧

阅读理解。

     BBC News (May 11, 2008)-Edinburgh Zoo plans to bring a pair of giant pandas from China to Scotland.

Representatives from Edinburgh Zoo have recently returned from China. They signed a letter of intent (意向

书) there, making a promise to bring giant pandas to the Zoo. 

     It has been suggested that the pair of giant pandas should be on loan (暂借) to the Royal Zoological

Society of Scotland (RZSS) for 10 years. The pair of giant pandas would give birth to babies during that time.

Edinburgh Zoo would be the eighth zoo in the Western world to care for the species if the project goes ahead.

     Zoo chiefs said that looking after the endangered animals could benefit conservation. David Windmill, chief

of RZSS, said, "Working with giant pandas means so much more to us than introducing a new species to our

collection. It is an opportunity to work on a global level with other conservationists to gain a better

understanding of the giant pandas, the threats they face, and what we can do to ensure their survival."

     At present, there are only around 1,500 giant pandas in the wild. RZSS has been working on the project for

almost a year, hoping to have giant pandas at Edinburgh Zoo by 2009, the year of the society's centenary (一百

周年纪念日). Mr. Windmill said that the project has received strong support from the UK and Scottish

Governments. He also said that this must continue if the Zoo is to reach an agreement with the Chinese. As

part of the agreement with the Chinese Government, Edinburgh Zoo will work together with Chinese scientists

on research projects benefiting conservation in the wild.

     RZSS will also provide money to support giant panda conservation projects in the wild. Giant pandas live

in mountainous regions in central China and almost mainly feed on bamboo, which makes up 99% of what they

eat.

1. What do we know from the first two paragraphs? [ ]

A. China will give a pair of giant pandas to Edinburgh Zoo.

B. Representatives from Edinburgh Zoo have been to China.

C. The Scottish Government has signed a letter of intent with China.

D. Edinburgh Zoo is the first Western zoo to have giant pandas.

2. According to the text, RZSS may be _____. [ ]

A. a company that deals with international business

B. an organization that researches endangered animals

C. a government department in charge of Western issues

D. an activity having something to do with animals

3. We can know from the text that _____. [ ]

A. David Windmill is Edinburgh Zoo's chief

B. the number of giant pandas in the wild is still unknown

C. RZSS will celebrate its centenary in 2009

D. RZSS knows the threats the giant pandas face well

4. What's the main idea of the text? [ ]

A. Edinburgh Zoo expects giant pandas from China.

B. Edinburgh Zoo does research into giant pandas.

C. Scotland supports giant panda conservation.

D. Giant pandas live happily in central China.

不会引起质控结果向上或向下趋势变化的是（）。

A.分光光度计波长渐渐偏移

B.更换校准品、试剂或操作者

C.光电池逐渐老化

D.试剂的挥发、潮析、沉淀

E.贮存质控品的冰箱温度过高

韦伯最早提出了农业区位理论，主要内容是研究距离对农业土地效益的影响。

在一个查询集中，要将指定的记录设置为当前记录，应该使用的宏操作命令是______。