Telecommunications allows people around the World to contact one another, to access information instantly, and to communicate from remote areas. Telecommunications usually involves a sender of information and one or more recipients(收件人) linked by a technology, such as a telephone system, that transmits information from one place to another. Telecommunications devices convert different types of information, such as sound and video, into electronic signals. The signals can then be transmitted by means of media such as telephone wires or radio waves. When a signal reaches its destination, the device on the receiving end converts the electronic signal back into an understandable message, such as sound over a telephone, moving images on a television, or words and pictures on a computer screen. Telecommunications enables people to send and receive personal messages across town, between countries, and to and from outer space. It also provides the key medium for news, data, information&r
A. Telecommunications are devices and systems that transmit electronic signals across long distances.
B. Telecommunications allows people around the world to contact one another, to access information instantly, and to communicate from remote areas.
C. Telecommunications usually involves a sender of information and one or more recipients(收件人) linked by a technology.
D. Telecommunications are devices and systems that carry, electronic signals across short distances.
| People use money to buy food, books,
bicycles and hundreds of other things they need. When they work, they usually
get paid in money. Most of the money used today is made of metal or paper. But in ancient times people used to use all kinds of things as money. One of the first kinds of money was shells. In China, cloth and knives were used as money. Elephant tusks, monkey tails and salt were used in some parts of Africa. Rice was also a kind of money used by the ancient people in some islands. Cows and other animals were used as money, too. The first copper coins were made in China. They were round and had a square hole in the centre. Different counties had used different metals for their money. Later some countries began to make Coins of gold and silver. But gold and silver were heavy to carry when people need a lot of A. they were too heavy B. they would be for future use C. they were easy to slip off D. they were useless [单项选择]Questions 11-15
People value money desperately because they value one another desperately; thus the cause of panic in the stock-market plunge is not that people will lose their dollars but that they will lose their sense of community. For the past couple of weeks, the nation has watched itself roll toward ruin because people were losing their money in bales. If one were tasteless enough to ask a big loser what exactly he was losing, he would sputter, "What am I losing My car! My beautiful home! My children’s educations! My clothes! My dinner! My dollars!" They are all true. People have been mourning the passing of their money for all the things that money can do, and what money can do is impressive. Money can build cities, cure diseases, and win wars. The sudden acquisition of the stuff can toss our spirits into the air like a hat.
Money can do considerably more. It offers power, an almost unique form of power, not simply because it allows us to acquire and possess things but becaus
A. the functions of money B. the stock-market plunge C. a new theory of investment D. a cold characteristic of cash [填空题]
Why can people save money if they buy clothes that can be washed Because ______ is expensive. [单项选择]People use money to buy food, books, bicycles and hundreds of other things they need. When they work, they usually get paid in money.
Most of the money used today is made of metal or paper. But in ancient times people used to use all kinds of things as money. One of the first kinds of money was shells. In China, cloth and knives were used as money. Elephant tusks, monkey tails and salt were used in some parts of Africa. Rice was also a kind of money used by the ancient people in some islands. Cows and other animals were used as money, too. The first copper coins were made in China. They were round and had a square hole in the centre. Different counties had used different metals for their money. Later some countries began to make Coins of gold and silver. But gold and silver were heavy to carry when people need a lot of coins to buy something expensive. The Chinese were the first to use paper money. The first paper money looked more like a note from one paper to another t A. India B. America C. France D. China 我来回答: 提交
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