A rapid means of long-distance transportation beca... - 搜题云问答

第1题

Which of the following statements is NOT true？A．Since the computer revolution, the express

Which of the following statements is NOT true？

A．Since the computer revolution, the expression "state of the art" has become popular.

B．State of the art means something that is the best one can buy.

C．With the rapid development of computer technology, a state of the art computer may easily become out of date.

D．All kinds of products are "state of the art" nowadays.

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第2题

Television—the most pervasive and persuasive of modern technologies, marked by rapid chang

e and growth—is moving into a new era, an era of extraordinary (1)_____ and versatility, which promises to reshape our lives and our world. It is an electronic revolution of sorts, made possible by the (2)_____ of television and computer technologies.

The word "television", derived from its Greek (tele: distant) and Latin (vision: sight) roots, can (3)_____ be interpreted as sight from distance. Very simply (4)_____, it works in this (5)_____: through a sophisticated system of electronics, television provides the capability of (6)_____ an image (focused on a special photo-conductive plate within a camera) into electronic impulses, which can be sent through a wire of cable. These impulses, when fed into a (7)_____ (television set), can then be electronically (8)_____ into that same image.

Television is (9)_____ just an electronic system, (10)_____. It is a means of expression, as well as a (11)_____ for communication, and as such becomes a powerful tool for reaching other human beings.

The field of television can be divided into two (12)_____ determined by its means of transmission. First, there is broadcast television, which reaches the masses through broad-based airwave transmission of television (13)_____. Second, there is non-broadcast television, which provides for the needs of individuals or (14)_____ interest groups through controlled transmission techniques.

Traditionally, television has been a (15)_____ of the masses. We are most familiar with broadcast television (16)_____ it has been with us for about thirty-seven years in a form. similar to what exists today. During those years, it has been controlled, for the most part, by the broadcast networks. ABC, NBC and CBS, who have been the (17)_____ purveyors of news, information, and entertainment. These giants of (18)_____ have actually shaped not only television but our perception of it as well. We have come to (19)_____ the picture tube as a source of entertainment, placing our role in this (20)_____ medium as the passive viewer.

A．sophistication

B．deformity

C．manoeuvre

D．elaboration

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第3题

For the most part, rapid economic development has been a favor. But there is a down side t

o development—health problems such as overweight are all becoming more common, as more people take taxis to work instead of riding their bicycles, and other labour-saving devices become more popular.

An increasingly fast pace of life makes it difficult for people to spend time playing sports. " I know exercise is good for your health, " a young lady said, " But after a busy work week, the only thing I want to do is watching TV and going to sleep. " That attitude may explain the results of a recent nationwide study, which suggested 15 percent of urban adults in China have heart problems.

Local researchers found that 31. 2 percent of elderly respondents were getting enough exercise, but less than 9 percent of youngsters and the middle-aged got enough physical activity.

Elderly people understand the importance of protecting their health. The young people, however, are busy working and use this as an excuse to avoid exercise. In fact, physical exercise doesn't require much time, money or a special gymnasium. People can make use of any time and any place at their convenience to take part in sports. Walking quickly, cycling, climbing the stairs and dancing are all helpful methods to improve one's health.

The benefits of adding a little more activity to your life are priceless. " There is no need to be an athlete (运动员) , however, "a local doctor said. People should walk for 30 minutes a day and take part in some other physical activities three to five times a week. He warns, however, that people in poor physical shape should start slowly, and build up over time.

By referring to rapid economic development as "a favor" at the beginning of the passage, the author means that______ .

A．it has benefited the general public greatly

B．it has done harm to people's health nationwide

C．it is going faster than anyone could have imagined

D．it has helped to establish a healthy lifestyle. of the public

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第4题

A rapid means of long-distance transportation became a necessity for the United States as

settlement(新拓居地) spread over farther westward. The early trains were impractical curiosities, and for a long time the railroad companies met with troublesome mechanical problems. The most serious ones were the construction of rails able to bear the toad, and the development of a safe, effective stopping system. Once these were solved, the railroad was established as the best means of land transportation. By 1860 there' were thousands of. miles of railroads crossing the eastern mountain ranges and reaching westward to the Mississippi. There were also regional southern and western lines.

The high point in railroad building came with the construction of the first transcontinental sys tem. In 1862 congress authorized two western railroad companies to build lines from Nebraska west ward and from California eastward to a meeting point, so as to complete a transcontinental crossing linking the Atlantic seaboard with the Pacific. The Government helped the railroads generously with money and land. Actual work on this project began four years later. The Central Pacific Company, starting from California, used Chinese labor, while the Union Pacific employed crews of Irish labourers. The two groups worked at remarkable speed, each trying to cover a greater distance than the other. In 1869 they met at a place called Promontory in what is now the state of Utah. Many visitors came there for the great occasion. There were joyous celebrations all over the country, with parades and the ringing of church bells to honour the great achievement.

The railroad was very important in encouraging westward movement. It also helped build up industry and farming by moving raw materials and by distributing products rapidly to distant markets. In linking towns and people to one another it helped unify the United States.

The major problems with America' s railroad system in the mid-19th century lay in ______.

A．poor quality rails and unreliable stopping systems

B．lack of financial support for development

C．limited railroad lines

D．lack of a transcontinental railroad

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第5题

Television—that most pervasive and persuasive of modem technologies, marked by rapid chang

e and growth—is moving into a new era, an era of extraordinary sophistication and versatility, which promises to reshape our lives and our world. It is an electronic revolution of sorts, made possibly by the marriage of television and computer technologies.

The world "television", derived from its Greek (tele: distant) and Latin (vision: sight) roots, can literally be interpreted as sight from a distance. Very simply put, it works in this way: through a sophisticated system of electronics, television provides the capacity of converting an image (focused on a special photoconductive plate within a camera) into electronic impulses, which can be sent through a wire or cable. These impulse, when fed into a receiver (television set), can then be electronically reconstituted into that same image.

Television is more than just an electronic system, however. It is a means of expression as well as a vehicle for communication, and as such becomes a powerful tool for reaching other human beings.

The field of television can be divided into two categories determined by its means of transmission. First there is broadcast television, which reaches the masses through broad-based airwave transmission of television signals. Second, there is nonbroadcast television, through which provides for the needs of individuals or specific interest groups through controlled transmission techniques.

Traditionally, television has been a medium of the masses. We are-most familiar with broadcast television because it has been with us for about forty-seven years in a form. similar to what exists today. During those years, it has been controlled, for the most part, by the broadcast networks, ABC, NBC and CBS, who have been the major purveyors of news, information, and entertainment. These giants of broadcasting have actually shaped not only television but our perception of it as well. We have come to look upon the picture tube as a source of entertainment, placing out role in this dynamic medium as the passive viewer.

With what topic is the passage primarily concerned？

A．Recent changes in modem technology.

B．The marriages of broadcasting giants.

C．The role of television in today's society.

D．The content of broadcast television programs.

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第6题

colonial/kə'lonɪəl/（）

A.殖民地的

B.侵略的

C.反抗的

D.抵抗的

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第7题

LON–NYC–LAX–SYD航线属于（)。

A.WH

B.AP

C.TS

D.FE

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第8题

Television—that most attractive modern technology, marked by rapid change and growth—is mo

ving into a new era which promises to reshape our lives and our world. It is an electronic revolution of sorts, made possible by the marriage of television and computer technologies.

The word "television" can literally be interpreted as sight from a distance. Very simply put, it works in this way: through a complete system of electronics, television provides the capability of converting an image into electronic impulses, which can be sent through a wire or cable. These impulses, when fed into a receiver (television set), can then be electronically reconstructed into that same image.

Television is more than just an electronics system, however. It is a means of expression, as well as a vehicle for communication, and as such becomes a powerful tool for reaching other human beings.

The field of television can be divided into two types. First, there is broadcast television, which reaches the masses through broad-based airwave transmission of television signals. Second, there is non-broadcast television, which provides for the needs of individuals or specific interest groups through controlled transmission techniques.

Traditionally, television has been a medium of the masses. It has been with us for about thirty- seven years in a form. similar to what exists today. During those years, it has been controlled mostly by the broadcast networks, ABC, NBC and CBS, who have been the major suppliers of news, information, and entertainment. These giants of broadcasting have actually not only shaped television as a source of entertainment, but placed our role in this active medium as the passive viewer.

What is the topic of the passage？

A．The role of television in today's society.

B．The marriage of broadcasting giants.

C．Recent changes in modern technology.

D．The content of broadcast television programs.

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第9题

研究发现，随着细胞的老化，细胞中的一种蛋白质一Lon蛋白酶的含量会下降,该发现有助于开发延缓细胞衰老过程的新药物。下列有关说法正确的是（）

A.细胞衰老受基因的控制，不利于个体的发育

B.老年人体内都是衰老的细胞，Lon蛋白酶含量下降

C.口服Lon蛋白酶可以延缓衰老

D.Lon蛋白酶在核糖体上合成时的直接模板是mRNA

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