脑神经中传导来自皮肤、肌、肌腱、关节等处的冲动的是（） A.一般躯体传出纤维 B.一

Today’s lecture is about the mass (1) of the world’s population. There are two major (2) why people are moving to cities. The first reason is (3) . People are moving to the cities because that’s where they can find (4) and earn money. The second reason for the move to cities has to do with (5) of life issues: comfort and (6) . Cities often offer better (7) . And then for many, city life is just more (8) . An interesting consequence of urbanization is that the average (9) of people in the countryside is increasing, while that of the cities is (10) .
Three key (11) can be identified in our cities. First of all, they’re getting bigger. Most cities are bigger now than ever before. Cities are also changing shape. They’re getting (12) , because land is getting more and more expensive. (13) have become a symbol of modern cities.
Cities are also changing shape in other ways. The (14) Model and the (15) Nuclei Model are probably more typical of the cities we know today. They show the urban (16) that’s occurring in contemporary cities.
The third change is that our cities are breaking up into (17) communities, often by (18) group or (19) level. This often means that people stay within their community and do not come into contact with others from different (20) .

土地与一般商品均可通过市场进行交易，因而土地估价的原理与方法和商品价格评估的原理与方法基本相同。()

石墙要分层砌筑，每层高300～400mm，每层中间隔( )m左右砌与墙同宽的拉结石。

A．0.5
B．1.0
C．1.5
D．2.0

电工特种作业人员应当具备高中或相当于高中以上文化程度。

下列哪些措施能确保档案原件安全（）

A、加强馆库建设

B、尽快封存档案原件

C、及时对档案进行抢救修复

D、加速开展纸质档案数字化工作

E、采用先进的技术防范手段