试题与答案

读我国西北部内陆两地景观示意图完成下列问题。 小题1:甲地以井为中心在草原上形

题型:选择题

题目:

读我国西北部内陆两地景观示意图完成下列问题。

小题1:甲地以井为中心在草原上形成沙地,其原因可能是:       

A.由于过度开采地下水导致形成地下水漏斗区

B.由于干旱地区地下水含盐量高,使植物不能生存

C.由于风力侵蚀形成风蚀洼地

D.水井周围地区农牧业活动较频繁而导致地表植被破坏小题2:在乙地区,可能反映该地区绿洲萎缩的现象有:    

A.土壤盐碱度升高

B.土壤有机质增加,土壤紧实度下降

C.沙尘暴频度减少

D.生物生产能力提高

答案:

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题型:阅读理解

阅读理解

     Most of us lead unhealthy lives; we spend far too much sitting down. If in addition we are careless

about our diets, our bodies soon become loose and fatty and our systems slow moving. There are some

aspects(方面) of our unhealthy lives that we cannot avoid. I am thinking of such features of modern city life as pollution, noise, rushed meals and stress. But keeping fit is a way to reduce the effects of these evils.

The usual suggestion to a person who is looking for a way to keep fit is to take up some sport or other.

While it is true that every weekend you will find people playing football and hockey in the local park, they are outnumbered a hundred to one by the people who are simply watching them.

     For those who do not particularly enjoy competitive sports-and it is especially difficult to do so if you

are not good at them-there are such separate activities as cycling, walking, jogging and swimming. What often happens though is that you do them in such a leisurely way, so slowly, that it is doubtful if you are doing yourself much good, except for the fact that you have at least managed to get up out of your armchair.

     Even after you have found a way for keeping in shape, through sport or gymnastics, you are still only

half way to good health, because, according to the experts, you must also master the art of complete

mental and physical relaxation(放松). It has to do with deep breathing, emptying your mind of all thoughts, meditation, and so on. Yoga, as practiced in the West, is the most widely known and popular of the systems for achieving the necessary state of relaxation. It seems ironical (讽刺性的), though, that as our lives

have improved in a material sense we have found it increasingly necessary to go back to forms of

activity-physical effort on the one hand and relaxation on the other-which were the natural way of life of

our forefathers.

1. Pollution, noise and stress are examples of _____.

A .causes of unfitness    

B. bad features of living in towns

C. the things we can completely do away with  

D. unavoidable things in town

2.We don't get much out of separate sports because we _____.

A. don't do them very often        

B. don't do them actively enough

C. find it hard to get out of our armchairs

D. don't find them interesting

3.To be healthy we must _____.

A. keep fit and active

B. keep fit and learn to relax

C. be active and practise Yoga    

D. have a sound mind

4.Our forefathers were healthy because_____.

A. their way of life closely connected with both exercise and relaxation

B. they were careful to get plenty of fresh air

C. they spent most of the time out of doors

D. their environment was not polluted

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题型:多项选择题

关于鼻腔的血液供应,下列哪些叙述正确?()

A.利特尔区(Little’sareA.是指动脉分支血管在鼻中隔的粘膜下层形成的网状血管丛

B.克氏静脉丛(Kiesselbach’splexus)是指静脉分支血管在鼻中隔的粘膜下层形成的网状血管丛

C.伍氏鼻咽静脉丛(Woodruffsplexus)是指老年人下鼻道外侧壁后部近鼻咽处表浅扩张的静脉丛

D.鼻中隔易出血区包括利特尔区(Little’sareA.和克氏静脉丛(Kiesselbach’splexus)

E.鼻前庭易出血区包括利特尔区(Little’sareA.和克氏静脉丛(Kiesselbach’splexus)

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