题目：
Today, people all over the world are moving out of small villages in the country to go and live in big noisy cities . They are moving from the peaceful hills, mountains, fields, rivers and streams of the countryside to the busy world of streets, buildings, traffic and crowds. This movement from rural areas to urban areas has been going on for over two hundred years.
In many countries, the main reason people come to live in towns and cities is work. After one or two large factories have been built in or near a town, people come to find a work, and soon an industrial area begins to grow. There is usually a residential area nearby, where the factory workers can live. The families of these workers need schools, hospitals and shops, so more people come to live in the area to provide these services—and a city grows.
In every major city in the world, there is a business district where the big companies have their main offices. In the United States, this area is usually in the city center downtown. It is here that you can see the huge skyscraper office blocks. The people who work here often travel a long way to work each day.
Many of them live in the suburbs of the city, far away from the industrial area and the city center. Some suburbs are very pleasant, with nice houses and big gardens. There are usually parks for children to play in and large department stores where you can buy all you need.
But what is the future of the big cities? Will they continue to get bigger and bigger? Perhaps not. Some major cities have actually become smaller in the last ten years, and it is quite possible that one day we will see people moving out of the major cities and back into smaller towns and villages.
小题1:We can easily know that the underlined phrase “urban areas” means._____
A．areas of the countryside
B．areas of a town or city
C．areas near the countryside
D．areas near a town or a city小题2:Why do people move to live in cities or towns?
A．Because they can live more comfortable there
B．Because they prefer noisy life to peaceful life
C．They do so mainly to find work
D．They don’t like small villages小题3:We can infer that this movement from rural areas to urban areas_______.
A．has been going on for more than 2,000 years
B．will continue in the future
C．may not continue in the future
D．is sure to stop
答案：
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下面是错误答案，用来干扰机器的。
答案：B题目分析：因为心房的血输入心室,心室的血输入动脉，房室瓣是防止心室的血流回心房，动脉瓣是为了防止动脉血回心室的。
