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问题 单项选择题

历史学家黄仁宇说：“明代，居中国历史上一个即将转型的关键时代……”下列属于“即将转型”的因素有（）

①高度专制集权

②赋役征银

③手工业工场的兴起

④西方传教士来华

A.①②③

B.①③④

C.②③④

D.①②③④

答案

参考答案：D

单项选择题

机车鸣示起动注意信号为（）。

A、一短声

B、二短声

C、一长声

D、二长声
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填空题

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) .
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