下列哪种情况不可能造成泥包卡钻（）。A、软地层钻井，加大钻压 B、粘土层采用粘度大的泥

偏头痛发病的特点不包括（）

A.男性为多见

B.发病多始于青春期

C.大多数有偏头痛的家族史

D.头痛呈搏动性

E.伴恶心、呕吐

In the eighteenth century one of the first modern economists, Adam Smith, thought that “ the whole annual produce of the land and labour of every country” provided revenue to “three different orders of people: those who live by rent, those who live by wages, and those who live by profit”. Each successive stage of the industrial revolution, however, made the social structure more complicated.

Many intermediate groups grew up during the nineteenth century between the upper middle class and the working class. There were small-scale industrialists as well as large ones, small shopkeepers and tradesmen, officials and salaried employees, skilled and unskilled workers, and professional men such as doctors and teachers. Farmers and peasants continued in all countries as independent groups.

During the nineteenth and early twentieth centuries the possession of wealth inevitably affected a person’s social position. Intelligent industrialists with initiative made fortunes by their wits which lifted them into an economic group far higher than that of their working-class parents. But they lacked social training of the upper class, who despised them as the “new rich.”

They often sent their sons and daughters to special schools to acquire social training. Here their children, mixed with the children of the upper classes, were accepted by them, and very often found marriage partners from among them. In the same way, a thrifty, hardworking labourer, though not clever himself, might save for his son enough to pay for an extended secondary school education in the hope that he would move in a “white-collar” occupation, carrying with it a higher salary and a move up in the social scale.

In the twentieth century the increased taxation of higher incomes, the growth of the social services, and the wider development of educational opportunity have considerably altered the social outlook. The upper classes no longer are the sole, or even the main possessors of wealth, power and education, though inherited social position still carries considerable prestige.

小题1:What criterion did Adam Smith seem to go by in his classification of social groups?

A．The amount of wealth

B．The amount of money

C．The social status

D．The way of getting money小题2:If you compare the first and second paragraph, what groups of people did Adam Smith leave out in his classification?

A．Officials and employees.

B．Peasants and farmers.

C．Doctors and teachers.

D．Tradesmen and landlords.小题3:Who were the ‘new rich’ during the nineteenth and early twentieth centuries?

A．They were still the upper class people.

B．They were owners of large factories.

C．They were intelligent industrialists.

D．They were skilled workers who made their fortune.小题4:According to the passage, what did those people do who intended to make their children move up in the social ladder?

A．They saved a lot of money for their children to receive higher education.

B．They tried to find marriage partners from the children of the upper class.

C．They made greater fortunes by their wits.

D．They worked even harder to acquire social training.小题5: In the twentieth century class differences have been partly smoothed out by ____.

A．increased income and decreased taxation

B．taxation, social services and educational opportunities

C．education, the increase of income and industrial development

D．the decrease of the upper class population

"上消化道"指的是（）

A.食管全程

B.食管+胃

C.食管+胃+十二指肠

D.食管+胃+十二指肠+空肠

E.食管+胃+十二指肠+空肠+回肠

宋朝的朱熹，曾经给《论语》做过注释，可是假如当孔子正在跟颜回、子路他们谈话的时候，朱熹闯了进去，管保他们在讲什么，他是一句也听不懂的。不光是古代的话后世人听不懂，同一种语言在不同的地方也经历着不同的变化，久而久之也会使这个地方的人听不懂那个地方的话，形成许许多多方言。
这段话主要支持了这样一种观点，即( )。

A．由于语言不通，朱熹对《论语》的注释不可能是完全正确的
B．不同的语言、方言在很大程度上影响了人们的沟通和交流
C．在不同的历史时期或不同的地区，语义语音的变化是非常显著的
D．孔子、颜回和子路讲的方言和朱熹讲的方言是完全不同的

简述地方性氟中毒的发病机制。