题目内容
Passage Five
Roman soldiers in some places built long rows of signal towers. When they had a message to send, the soldiers shouted it from tower to tower. If there were enough towers and enough soldiers with loud voices, important news could be sent quickly over distance.
In Africa, people learned to send messages by beating on a series of large drums (鼓). Each drum was kept within hearing distance of the next one. The drum beats were sent out in a special way that all the drummers understood. Though the messages were simple, they could be sent at great speed for hundreds of miles.
In the eighteenth century, a French engineer found a new way to send short messages. In this way, a person held a flag in each hand and the arms were moved to various positions representing different letters of the alphabet (字母表). It was like spelling out words with flags and arms.
Over a long period of time, people sent messages by all these different ways. However, not until the telephone was invented in America in the nineteenth century could people send speech sounds over a great distance in just a few seconds.
51. According to this passage, the Roman way of communication depended very much on______.
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A. supper B. suppose C. surround D. support
Passage Four
If you are like most people, your intelligence varies from season to season. You are probably a lot sharper in the spring than you are at any other time of year. A noted scientist, Ells- worth Huntington (1876-1947) concluded from other men's work and his own among peoples in different climates that climate and: temperature have a definite effect on our mental abilities.
He found that cool weather is much more favorable for creative thinking than summer heat is. This does not mean that all people are less intelligent in the summer than they are during the rest of the year. It does mean, however, that mental, abilities of large numbers of people tend to be lowest in the summer.
Spring appears to be the best period of the year for thinking. One reason may be that in the spring man's mental abilities are affected by the same factors that bring about great changes in all nature.
Fall is the next best season, then winter. As for summer, it seems to be a good time to take a long vacation from thinking!
46. According to the passage, your mental ability ______.
Passage Three
Many visitors finds the fast pace at which American people move very troubling. One's first impression is likely to be that everyone is in a rush. City people always appear to be hurrying to get where they are going and are very impatient if they are delayed even for a short moment.
At first, this may seem unfriendly to you. People will push past you as they walk along the street. You will miss smiles, brief conversations with people as you shop or dine away from home. Do not think that because Americans are in such a hurry they are unfriendly. Often, life is much slower outside the big cities, as is true in other countries as well.
Americans who live in cities often think that everyone is equally in a hurry to get things done; just as city people do in Tokyo, Singapore or Paris, for example. But When they discover that you are a stranger, most Americans become quite kindly and will take great care to help you. If you need help and say, "I am a stranger here. Can you help me？' Most people will stop, smile at you, and help you find you way or answer your questions. Occasionally, you may find someone too busy or perhaps too rushed to give you help. If this happens, do not be discouraged (气馁); just ask someone else. Most Americans enjoy helping a stranger.
41. Many people who first visit the United States will find that______.
A. avenue B. argue C. barbecue D. clue
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