搜题请搜索小程序“爱下问搜题”
问题 单项选择题

衡量一个城市的道路系统规划与用地规划结合程度的好坏，很重要的一条标准就是看其是否最大限度( )。

A．减少居民出行次数

B．减少交通的周转次数

C．减少交通的时间

D．减少道路长度

答案

参考答案：B

解析：减少交通周转次数不是减少居民的出行次数和货物的运量，而是减少出行距离和不必要的往返运输。

单项选择题

Watch a baby between six and nine months old, and you will observe the basic concepts of geometry being learned. Once the baby has mastered the idea that space is three-dimensional, it reached out and begins grasping various kinds of objects. It is then, from perhaps nine to fifteen months, that the concepts of sets and numbers are formed. So far, so good. But now an ominous development takes place. The nerve fibers in the brain insulate themselves in such a way that the baby begins to hear sounds very precisely. Soon it picks up language, and it is then brought into direct communication with adults. From this point on, it is usually downhill all the way for mathematics, because the child now becomes exposed to all the nonsense words and beliefs of the community into which it has been so unfortunate as to have been born. Nature having done very well by the child to this point, having permitted it the luxury of thinking for itself for eighteen months, now abandons it to the arbitrary conventions and beliefs of society. But at least the child knows something of geometry and numbers, and it will always retain some memory of the early happy days, no matter what vicissitudes it may suffer later on. The main reservoir of mathematical talent in any society is thus possessed by children who are about two years old, children who have just learned to speak fluently.

The word " vicissitude" (in boldface) in the context means().

A. change

B. transformation

C. variation

D. the rubs and worries of life
查看答案
问答题 简答题

导致意式浓缩咖啡表层咖啡油（Crema）变黑的原因是什么？
查看答案