问题 单项选择题 A1/A2型题

可引起脑血管扩张、出血的是()

A.低渗性脱水

B.等渗性脱水

C.高渗性脱水

D.水中毒

E.水肿

答案

参考答案:C

解析:高渗性脱水由于脑细胞脱水和脑体积缩小,造成颅骨与脑皮质之间空隙增大,引起脑血管扩张或出血,而导致中枢神经系统功能障碍。

阅读理解

When Mrs.Joseph Groeger died recently in Vienna,Austria,people asked the obvious question,“Why did she live to be 107?” .Answers were provided by a survey conducted among 148 Viennese men and women who had reached the age of 100.Somewhat surprising was the fact that the majority had lived most of their lives in cities.In spite of the city’s image as an unhealthy place,city living often provides benefits that country living can lack.One factor seems to be important to the longevity(长寿)of those interviewed.

This factor is exercise.In the cities it is often faster to walk short distances than to wait for a bus.Even taking public transportation often requires some walking.Smaller apartment houses have no elevators(电梯),and so people must climb stairs.City people can usually walk to local supermarkets.  Since parking spaces are hard to find,there is often no alternative to walking.

On the other hand,those who live in the country and suburbs do not have to walk every day.In fact,the opposite is often true.To go to school,work,or almost anywhere else,they must ride in cars.

小题1:The Vienna survey may help to explain _____

A.the complaints of people in apartment houses

B.the cause of Mrs Groeger’s death

C.the longevity of people like Mrs.Groeger

D.the image of cities in general小题2:The purpose of the second paragraph is to list some _____

A.benefits of walking

B.occasions for walking in city life

C.comments made by city people

D.problems of city living小题3:To reach the third floor of a building, it would probably be most healthful __

A.to take the elevator

B.to walk up the stairs

C.to ride in a car

D.to find an alternative to walking小题4:People who live in the country probably do more driving than walking because __

A.they don’t live near business areas

B.they don’t need the exercise

C.they never have parking problems

D.they can’t afford to take the bus小题5:A conclusion that can be drawn from this passage is that__________   

A.air pollution is not serious

B.anyone can live to be 107

C.country people should move to the city

D.walking is a healthful exercise

单项选择题