单选题Why did the man come back?

单选题What does the man mean?

单选题 {{B}}Text{{/B}} AIDS threatens not only lives but also-in poor countries - economic development. By{{U}} {{U}} 1 {{/U}} {{/U}}mainly at adults 20 to 49 years old, AIDS robs these societies{{U}} {{U}} 2 {{/U}} {{/U}}some of their most productive citizens. Ignorance and fear of the disease can disrupt families and communities and may even{{U}} {{U}} 3 {{/U}} {{/U}}political relations between nations. Because AIDS is a worldwide epidemic (传染病，流行病), nothing{{U}} {{U}} 4 {{/U}} {{/U}}than a worldwide effort can control and perhaps some day wipe the disease. Governments must{{U}} {{U}} 5 {{/U}} {{/U}}by fully informing their citizens{{U}} {{U}} 6 {{/U}} {{/U}}the epidemic and, most important, by telling people{{U}} {{U}} 7 {{/U}} {{/U}}actions they can take to prevent infection(感染). Public health agencies must also insure that blood transfusions (输血) and{{U}} {{U}} 8 {{/U}} {{/U}}are safe. Those already infected should receive{{U}} {{U}} 9 {{/U}} {{/U}}attention so they do not spread the virus to others. {{U}} {{U}} 10 {{/U}} {{/U}}, the U. S. government has committed more than two billion dollars to fight {{U}}{{U}} 11 {{/U}} {{/U}}AIDS in 1989 - including more than 600 million dollars for research. The screening of blood{{U}} {{U}} 12 {{/U}} {{/U}}has already ensured the safety of blood supplies in the U. S. , and American military personnel are required to take{{U}} {{U}} 13 {{/U}} {{/U}}blood tests. Public health groups have carried{{U}} {{U}} 14 {{/U}} {{/U}}AIDS education programs aimed particularly at homosexuals,{{U}} {{U}} 15 {{/U}} {{/U}}addicts, and others whose behavior makes them highly susceptible (易受影响的){{U}} {{U}} 16 {{/U}} {{/U}}the virus. U. S. government agencies are also{{U}} {{U}} 17 {{/U}} {{/U}}public health authorities throughout the developing world in their efforts to{{U}} {{U}} 18 {{/U}} {{/U}}the spread of the AIDS virus and to treat those afflicted with the disease.{{U}} {{U}} 19 {{/U}} {{/U}}the rapid spread of the disease and the number of people now infected, the battle against AIDS will be difficult to win. But it's a battle the world cannot{{U}} {{U}} 20 {{/U}} {{/U}}to lose.

单选题Much of what is called "alternative medicine" is in fact much earlier in origin and use than Orthodox (正统的) medicine called conventional medicine, and it adopts a more natural approach to healing. Orthodox medicine 1 people when they are ill, and lets preventive (预防性的) measures take a 2 place. Alternative medicine will treat people 3 they are well and seek to 4 them from becoming ill. There are other 5 between the two forms. Orthodox medicine mainly attacks the symptoms of the particular disease 6 which the patient is complaining. The alternative 7 treat the whole man, seeking to 8 his present condition to his whole lifestyle, 9 may need to be changed into part of the cure to prevent a 10 of the illness. This approach is of course also 11 to orthodox medical students 12 their early training but it is 13 lost when they go into general 14 . Alternative medicine refuses artificial drugs 15 the main, seeking to use natural 16 and to help the body to 17 itself. The methods are gentler in 18 to the patient and less violent in their action on his body. Supporters of alternative medicine believe that these approaches are safer and more natural and have been shown through 19 to work. In certain countries, alternative medical practices are the most widely used methods of health 20 .

单选题What does Susan mean?

单选题 IQuestions 14-17 are based on the following dialogue./I

单选题According to the text, advertising is important to ______.

单选题What is the probable relationship between the two speakers?

单选题Companies with large scale need a way to reach the savings of the public at large. The same problem, on a smaller scale, faces practically every company trying to develop new products and create new jobs. There can be little prospect of raising the sort of sums require from friends and people we know, and while banks may agree to provide short term finance, they are generally unwilling to provide money on a permanent basis for long-term projects. So companies turn to the public, persuading people to lend them money, or take a share in the business in exchange for a share in future profits. Thus they do by issuing stocks and shares in the business through the Stock Exchange. Only by doing so can they put into circulation the savings of individuals both at home and abroad. When the saver needs his money back, he does not have to go to the company with whom he originally placed it. Instead, he sells his shares through a stockbroker to some other savers who is ear- nest to invest his money. A lot of the services needed both by industry and by each of us are provided by the Government or by local authorities. The governments at all levels furnish us with hospitals, roads, electricity, telephones, equipment and other new development. The money raised through taxes alone can't serve us properly. The government, local authorities, and nationalised industries therefore frequently need to borrow money to support major capital expenses, and they too, come to the Stock Exchange. There is hardly a man or woman in this country whose job or whose living standard does not rely on the ability of his or her employers to raise money to finance new development. In one way or an- other, the money needed must be gathered from the public at home or abroad. The Stock Exchange exists to supply a channel through which these savings can reach those who need finance.

单选题 The value of money is going down. What you could buy in 1970 for ￡20, now, in 1979 costs￡56.40. That's inflation and nobody likes it, least of all the Bank of England. One of the results of inflation is that people need coins and notes of higher value. At the moment, the note of the highest value which is generally in circulation is the ￡20 note. Now, the Bank of England plans to introduce a new, ￡50 note. And the Bank is trying to decide which famous English man or woman to put on the back of the new note. Quite a problem. The Bank usually chooses safe, historical personalities. We already have Sir Isaac Newton, the scientist, the first duke of Wellington, the famous soldier who led the British army at Waterloo, Florence Nightingale, founder of English nursing and — of course — Shakespeare. So far, the list of possible choices for the ￡50 note is quite predictable. There's Sir Francis Drake, to represent the achievements of English explorers in the sixteenth century. Then we have Lord Nelson, another sailor and the man who won the battle of Trafalgar in 1805 for England. Isambard Kingdom Brunel, the engineer, is also on the list because of the magnificent bridges which he built. The Bank will not forget music this time either — Sir Edward Elgar, one of our most famous composers of the nineteenth century is a possible choice. If they choose a woman, the feminist movement has two representatives: Boadicea, Queen of the early English tribes of the first century, who fought against the Romans, or Emily Pankhurst, who fought to get the vote for women early in this century. What do you think of this selection? There's no one who was alive in the last fifty years on it and no political leader. Why not? Why doesn't the Bank choose popular heroes — like the Beatles, for example? Write and tell "BBC Modern English" who is on your list for this banknote. Imagine you have to choose some personality to go on a banknote in your own country. Who is your choice?

单选题How long did it take for a letter to get to the USA six years ago?

单选题It's raining hard will you give me a ______? [A] ride [B] trip [C] travel

单选题Automation refers to the introduction of electronic control and automatic operation of productive machinery. It reduces the human factors, mental and physical, in production, and is designed to make possible the manufacture of more goods with fewer workers. The development of automation in American industry has been called the "Second Industrial Revolution." Labor's concern over automation arises from uncertainty about its effects on employment, and fears of major changes in jobs. In the main, labor has taken the view that resistance to technological change is futile. In the long run, the result of automation may well be an increase in employment, since it is expected that vast industries will grow up around manufacturing, maintaining, and repairing automation equipment. Unquestionably, however, there will be major shifts in jobs within plants and displacement of labor from one industry to another. The interest of labor lies in bringing about this transition with a minimum of inconvenience and distress to the workers involved. Also, union spokesmen emphasize that the benefit of the increased production and lower costs made possible by automation should be shared by workers in the form of higher wages, more leisure, and improved living standards. To protect the interests of their members in the era of automation, unions have adopted a number of new policies. One of these is the promotion of supplementary unemployment benefits plans. It is emphasized that since the employer involved in a SUB plan has a direct financial stake in preventing unemployment, he will have a strong incentive for planning new installations so as to cause the least possible disruption in jobs and job assignments. Some unions are working for dismissal pay agreements, requiring that permanently laid off workers be paid a sum of money based on length of service. Another approach is the idea of the "improvement factor," which calls for wage increase based on increases in productivity. It is probable, however, that labor will rely mainly on reduction in working hours in order to gain a full share in the fruits of automation.

单选题 It is hard to track the blue whale, the ocean's largest creature, which has almost been killed off by commercial whaling and is now listed as an endangered species. Attaching radio devices to it is difficult, and visual sightings are too unreliable to give real insight into its behavior. So biologists were delighted early this year when, with the help of the Navy, they were able to track a particular blue whale for 43 days, monitoring its sounds. This was possible because of the Navy's formerly top-secret system of underwater listening devices spanning the oceans. Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies. Earth scientists announced at a news conference recently that they had used the system for closely monitoring a deep-sea volcanic eruption (爆发) for the first time and that they plan similar studies. Other scientists have proposed to use the network for tracking ocean currents and measuring changes in ocean and global temperatures. The speed of sound in water is roughly one mile a second-slower than through land but faster than through air. What is most important, different layers of ocean water can act as channels for sounds, focusing them in the same way a stethoscope (听诊器) does when it carries faint noises from a patient's chest to a doctor's ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.

单选题"We are not about to enter the Information Age, but instead are rather well into it. " Present predictions are that by 1990, about thirty million jobs in the United States, or about thirty percent of the job market, will be computer-related. In 1980, only twenty-one percent of all American high schools owned one or two computers for student use. In the fall of 1985, a new study showed that half of United States secondary schools have fifteen or more computers for student use. And now educational experts, administrators, and even the general public are demanding that all students become "computer-literate" . By the year 2000 knowledge of computers will be necessary in over eighty percent of all occupations. Soon those people not educated in computer use will be compared to those who are print-illiterate today. What is "computer literacy" ? The term itself seems to imply some degree of " knowing" about computers, but knowing what? The present opinion seems to be that this should include a general knowledge of what computers are, plus a little of their history and something of how they operate. Therefore, it is important that educators everywhere take a careful look not only at what is being done, but also at what should be done in the field of computer education. Today most adults are able to use a motor car without the slightest knowledge of how the internal combustion engine (内燃机) works. We effectively use all types of electrical equipment without being able to tell their histories or to explain how they work. Business people for years have made good use of typewriters and adding machines, yet few have ever known how to repair them. Why, then, attempt to teach computers by teaching how or why they work? Rather, we first must fix our mind on teaching the effective use of the computer as the tool is. "Knowing how to use a computer is what's going to be important. We don't talk about 'automobile literacy'. We just get in our cars and drive them. /

单选题Whatdoesthewomanmean?