问题 单项选择题 A3/A4型题

硫喷妥钠静脉麻醉时较常见的并发症是()

A.低血压

B.心律失常

C.喉痉挛

D.尿潴留

E.惊厥

答案

参考答案:C

解析:硫喷妥钠为超短时作用的巴比妥类药物。静注后很快产生麻醉,故称静脉麻醉药。其主要优点是作用快、诱导期短、无兴奋现象、呼吸道并发症少,一次静注后可维持麻醉20~30分钟,麻醉后恶心、呕吐少见。但麻醉时间短,痛觉消失和肌肉松弛也不够完全。适用于短小手术、诱导麻醉与抗惊厥。硫喷妥钠容易引起呼吸抑制及喉痉挛,故注射宜缓慢。如出现呼吸微弱,乃至呼吸停止,应即停止注射。使用时必须备以气管插管、人工呼吸机及氧气。故答案应选C。

阅读理解

阅读理解。

     These days, if you still think the cell phone is just for talking, you'll get laughed at. Yes, it's true, voice-

only handsets have become out of date. Today's do-it-all mobiles have a lot in common with the computer.

The only difference may be that they fit in your pocket and you pay by the minute to use them. Some of the

things a cell phone can do for you will be available this year:

      Surf at speed

      Cell phones that let you use the Web have been around for years. So, what's new? Well, faster third-

generation (3G) networks that let you surf at anywhere. This then allows a carrier to send video, music, and

games to your phone. Possible choices are from LG Electronics VX 8000 and Motorola V1150.

      Listen as you go

      The problem with most cell phone MP3 players is that they hold only a handful of songs. But, that's about

to change. Sony Ericsson's new W800i can hold around 150 songs in its 500 MB memory. And Samsung's

SPH-V5400 even comes with a 1.5 GB hard drive. Mobile phones may eventually replace mini-MP3 players,

especially for teens.

      Say cheese

      Camera cell phones are not new either. But, most of them have limitations: around 1-megapixel (百万像

素). But new technology has made 2-megapixel units more common, and 3-megapixel units are showing up

soon. Some 2-megapixel models, like Sony Ericsson's K750i, offer limited zoom and focus controls. Others,

like LG's recent A7110, can even capture 30 minutes of full-motion video.

      Portable TV

      You say you like"watching TV"? That's what Samsung MM-A700 wants to give you. The new model lets

users watch popular TV programmes-for a fee. Other choices are Nokia's 6620, Sanyo's MM7400 and NEC's

N940. The NEC model lets you watch public TV-no fee. 

      The above are just a handful of what you'll see in the coming months. Further down the road, your mobile

phone may play a host of other roles, such as mobile credit card, position locator... So what is there that a cell

phone can't do?

1. Which of the following models should you choose to listen to the music? [ ]

A. Samsung's SPH-V5400 and Nokia's 6620.

B. Sony Ericsson's W800i and Samsung's SPH-V5400.

C. Sony Ericsson's W800i and NEC's N940.

D. Sanyo's MM7400 and NEC's N940.

2. What's the difference between NEC's N940 and other models? [ ]

A. It allows you to surf the Internet at a high speed.

B. It can capture 30 minutes of full-motion video.

C. It can hold as many as 150 songs.

D. It lets you watch public TV for free.

3. Which of the following statements is TRUE according to the passage? [ ]

A. All the functions of the models mentioned in the passage are completely new.

B. Camera cellphones of 3-megapixel units will appear soon.

C. It is certain that a cellphone can do anything in the near future.

D. Today's do-it-all mobiles have nothing in common with the computer.

4. This passage may be _____. [ ]

A. an introduction to some new models of cellphones

B. an advertisement trying to persuade you to buy new cellphones

C. a science fiction trying to attract readers' attention

D. a survey to find the development of cellphones

单项选择题