搜题请搜索小程序“爱下问搜题”
问题 单项选择题

为使汽车在弯道顺利行驶，地下汽车停车场单向行驶车道的弯曲段回转半径有效宽度应( )。

A．大于3.0m

B．大于3.5m

C．大于5.0m

D．大于5.5m

答案

参考答案：B

单项选择题

Anthropology is the study of human beings as creatures of society. It (1) its attention upon those. physical characteristics and industrial techniques, those conventions and values, which (2) one community from all others that belong to a different tradition.

The distinguishing mark of anthropology among the social sciences is that it includes for serious study other societies (3) our own. For its purposes any social (4) of mating and reproduction is as significant as our own. To the anthropologist our customs and those of a New Guinea tribe are two possible social schemes for (5) a common problem, and in so far as he remains an anthropologist he is (6) to avoid any weighting of one (7) the other. He is interested in human behavior, not as it is shaped by one tradition, our own, but as it has been shaped by any tradition (8) He is interested in a wide (9) of custom that is found in various cultures, and his object is to understand the way in which these cultures change and (10) , the different forms through which they express themselves and the (11) in which the customs of any peoples function in the lives of the (12) .

Now custom has not been commonly regarded as a (13) of any great moment. The inner workings of our own brains we feel to be uniquely (14) of investigation, but custom, we have a way of thinking, is behavior at its most commonplace. (15) , it is the other way round. Traditional custom is a mass of detailed behavior more astonishing than (16) any one person can ever evolve in individual actions. Yet that is a rather (17) aspect of the matter. The fact (18) first rate importance is the predominant role that custom (19) in experience and belief, and the very great varieties it may (20)

18（）

A.in

B.of

C.at

D.to
查看答案
综合

（12分）图18为“济南市城市化前后水循环示意图”，图19为“济南市南部森林覆盖的河谷在暴雨中呈现的河流流量曲线及含沙量曲线”,读图后回答。

（1）城市化后较城市化前的水循环中蒸发量有何变化？分析其原因。（4分）

（2）济南市部分低洼地区经常发生洪涝灾害的原因是什么？（4分）

（3）森林砍伐前后，该河流呈现出的含沙量变化特征是什么？体现出森林的什么作用？

（4分）
查看答案