试题与答案

初产妇,孕39周,宫口开全2小时,频频用力,未见胎头拨露。检查:宫底部为臀,腹部前方

题型:单项选择题

题目:

初产妇,孕39周,宫口开全2小时,频频用力,未见胎头拨露。检查:宫底部为臀,腹部前方可触及胎儿小部分,未触及胎头。 * * 指检;胎头已达棘下2cm,矢状缝与骨盆前后径一致,大囟门在前方,诊断为()

A.骨盆入口轻度狭窄

B.骨盆入口头盆不称

C.原发性宫缩乏力

D.持续性枕后位

E.持续性枕横位

答案:

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滑轮组省力情况与承担物重的绳子段数有关.在不计动滑轮重力的情况下,使用滑轮组时,滑轮组用几段绳子吊着物体,提起物体用的力就是物体重的几分之一;绳子移动的距离就是物体移动距离的几倍.故答案为:几分之...

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题型:阅读理解

阅读理解。

     Information has always been at the center of human communication. You may ask why. Well,

communication between people contains giving and receiving information. The way we give and

receive information today has experienced a revolution in the development of the mass media in

the 20th century.

    The first truly mass communication medium was the newspaper.  For the first time in history

people could read about events in their country and from around the world every day. However,

there were two problems with newspapers of that time. Firstly, newspapers were available only in

large cities, for getting newspapers to the countryside was a difficult and timeconsuming (耗时的)

task. Secondly, newspapers weren't always reliable, as there was a limited range of opinions.

     Nowadays, we can choose from a wide variety of sources to get information. Television and the

Internet have given us the chance to be informed about everything the minute it happens. Large

numbers of radio and TV stations, satellite channels and millions of websites help people keep up

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    The media have come a long way in the last century and there is no doubt that we now live in the

information age. Whatever type of media we choose, it all comes down to the need for information.

This will always be a basic need as long as communication is part of human nature.

1. Information is considered the center of human communication because ________. 

A. human communication means information exchange

B. human communication involves people's participation

C. information is now experiencing a revolution

D. information helps people gather together

2. What was the historical contribution of the newspaper as a source of information?  

A. It made the mass communication truly develop.

B. It helped the mass communication develop in cities.

C. It kept people timely informed about home and world events.

D. It kept reliable information available in big cities.

3. The third paragraph mainly tells us that technology helps ________.

A. information easily available

B. people be part of history

C. inform everything timely

D. produce the latest news

4. It can be concluded from the last paragraph that a basic need today is ________. 

A. communication            

B. information

C. high technology           

D. media types

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