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更多“听力原文：Although some airlines prevent passengers from using portable electrical devices”相关的问题
第1题
The speaker is comparing two______.
A．research projects.
B．political declarations.
C．kinds of candies.
D．political events.
第2题
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第3题
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A．Jack wears a tight shirt.
B．We can grasp English culture before graduation with the help of Jack.
C．Jack hasn't got enough time to help us with English culture.
D．Jack manages to teach us in spite of being busy.
第4题
听力原文： We are now living in a world in which robots are taking over much of the work.Robots make our cars, fly our planes and work out wages.
But these robots are not mechanical men and women.They do not look like us.They are machines specially built to do some of the things that human beings can.
Although they may not look like us,robots need some human features in order to be able to do human work.First of all they need some kind of brain.Their "brain" is a computer,which has a memory to human member instructions and ability to control other equipment.Another essential feature of many robots is an arm that can do the kind of things that human beings can with their arms.One-armed robots are now coming into widespread use in industry.They are being used,for example,on car assembly lines.
The great advantage of robots over human workers is that they can work non-stop for long periods. They never get tired,and always work with the same accuracy.They can also work in conditions that humans could not bear.Last but not least,as more robots are built,their cost will come down.
Although robots are rapidly taking over many jobs in industry, they seem a long way from taking over in the home. The problem is that it would take a very complex and costly robot to perform. half the tasks involved in housework.
According to the speaker,what can the present-day robots do？
A．Drive cars.
B．Fly planes.
C．Pay wages.
D．Repair machines.
第5题
听力原文： The very success of satellite communications systems has raised widespread concern about their future. Some countries are already using satellites for domestic communications in place of conventional telephone lines on land. Although this technique is extremely useful for linking widely scattered villages in remote or mountainous regions, in heavily built-up areas where extensive telephone and telegraph systems already exist, domestic satellites are seen by the land-line networks as unfair competition. Despite such opposition, domestic satellites are gaining support from many businesses and public interest groups in the United States and seem likely to be more widely utilized in the future.
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A．They can be built to be very light.
B．They are inexpensive to operate.
C．They can be directed by remote control.
D．They easily connect distant points.
第6题
听力原文： My father was a very soft-spoken man, however, he had some very definite ideas about money and work. He believed that work was good for the soul and, besides, money could come in very handy. Papa also felt that the best way to get a job was to already have one.
As a teenager, I remember my father being delighted when my brother landed a job working for a major hamburger chain. My brother wasn't very happy about the job but desperately wanted the money necessary to buy his own ear. Although the position was as unglamorous as they come, my father felt that it was a good beginning. He believed that if you had a job, it would show other employers that you are worth hiring.
Even to this day, I never resign a position until I am offered another one. Papa's wise counsel has helped me to be gainfully employed ever since I graduated from college. Although papa died a few years ago,' his wisdom will be passed on to generation upon generation.
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A．He was indifferent to his job.
B．He was happy about his job.
C．He was unhappy about his job.
D．He was satisfied with his job.
第7题
听力原文： Some psychologists maintain that mental acts such as thinking are not performed in the brain alone, but that one's muscles also participate. It may be said that we think with our muscles in somewhat the same way that we listen to music with our bodies. You surely are not surprised to be told that you usually listen to music not only with your ears but with your whole body. Few people can listen to music that is more or less familiar without moving their body or, more specifically, some part of their body. Often when one listens to a symphonic concert on the radio, one is tempted to direct the orchestra even though one knows there is a competent conductor on the job.
Strange as this behavior. may be, there is a very good reason for it. One cannot derive all possible enjoyment from music unless one participates, so to speak, in its performance. The listener "feels" himself into the music with more or less pronounced motions of his body.
The muscles of the body actually participate in the mental process of thinking in the same way, although this participation is less obvious because it is less pronounced.
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A．Thinking is not a mental process.
B．Thinking was only a mental action.
C．Thinking is a process that involves our entire body.
D．Thinking is a process that involves the muscles as well as the brain.
第8题
听力原文： The food we eat seems to have produced profound effects on our health. Although science has made enormous steps in making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has shown that eight percent of all human illnesses are related to diet and forty percent of cancer is relined to the diet as well, especially cancer of the colon (结肠). Different cultures are more prone to contract certain illness became of the food that is characteristic in these cultures. That food is related to illness is not a new discovery. In 1945, government researchers realized that nitrates (硝酸盐) and nitrites (亚硝酸盐), commonly used to preserve color in meats, and other food additives, caused cancer. Yet, these additives remain in our food, and it becomes more difficult to know which things on the packaging labels of processed foods are helpful or harmful. The additives that we eat are not all so direct. Farmers often give penicillin to beef and administered to animals not for medical purposes, but for financial reasons. The farmers are simply trying to fatten the animal in order to obtain a higher price on the market, Although the Food and Drug Administration has repeatedly tried to control these procedures, the practices continue.
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A．It has made many additives.
B．It has caused most cancers.
C．It makes some cultures more prone to cancer.
D．It has made many foods unfit to eat.
第9题
听力原文：(With) Other viruses, such as smallpox and measles, and polioneuromere, the majority of people mount an immune response even if they never been vaccinated that clears the natural infection. With H1V, there are virtually no incidents of a person who has completely cleared the virus from their body, which means that although some people can control the virus better than others, the body is having trouble making a protective immune response.
What is the point the speaker is trying to make about HIV virus？
A．HIV vaccines trigger an immune response, but that response has proven inadequate.
B．The body's natural immune response to HIV infection could eradicate the virus.
C．The majority of people could mount an immune response even without being vaccinated that clears the natural infection from every virus.
D．Some people can control HIV virus better than others and make a protective immune response.
第10题
听力原文： Although people often use the phrase "the dictionary", there are many different kinds of dictionaries, some general and some specialized. General dictionaries are all-purpose dictionaries that contain a broad range of words and common usage. The first general dictionary that you used was probably a school dictionary. These dictionaries contain relatively few words and emphasize common words that you are most likely to encounter in your school years.
Later, most people acquire a college dictionary. These dictionaries have more than 150, 000 entries with detailed definitions that are sufficient for most college students as well as general users. They also separately list abbreviations, biographical and geographical names, foreign words and phrases and tables of measures. The Random House Websters College Dictionary and the American Heritage Dictionary are well-known college dictionaries.
For scholars or researchers, un abridged dictionary provides as many as 500,000 entries that have detailed definitions and extensive word histories. You will find these dictionaries primarily in libraries and they often spend several volumes. Specialized dictionaries such as the drinking water dictionary or dictionary of legal terms are also very useful for scholars or researchers.
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A．One that is unabridged with detailed definitions.
B．One that contains fewer words and emphasizes on special words.
C．One that contains a broad range of words in common usage.
D．One that spans several volumes and has extensive word histories.
