To avoid the various foolish opinions to which mankind is liable, no superhuman genius is required. A few simple rules will keep you, not from all errors, but from silly errors. If the matter is one that can be settled by observation, make the observation yourself. Aristotle could have avoided the mistake of thinking that women have fewer teeth than men, by the simple device of asking Mrs. Aristotle to keep her mouth open while he counted. He did not do so because he thought he knew. Thinking that you know when in fact you don’’t is a fatal mistake, to which we are all liable. Many matters, however, are less easily brought to the test of experience. If, like most of mankind, you have strong convictions on many such matters, there are ways in which you can make yourself aware of your own prejudice. If an opinion contrary to your own makes you angry, that is a sign that you subconsciously are aware of having no good reason for thinking as you do. If someone maintains that two and two are five, or that Iceland is on the equator, you feel pity rather than anger, unless you know so little of arithmetic or geography that his opinion shakes your own contrary conviction. The most savage controversies are those about matters as to which there is no good evidence either way. So whenever you find yourself getting angry about a difference of opinion, be on your guard; you will probably find, on examination, that your belief is going beyond what the evidence justifies. For those who have enough psychological imagination, it is a good plan to imagine an argument with a person having a different opinion. This has one advantage, and only one, ascompared with actual conversation with opponents; this one advantage is that the method is not subject to the same limitations of time and space. Mahatma Gandhi (圣雄甘地) considered it unfortunate to have railways and steamboats and machinery; he would have liked to undo the whole of the industrial revolution. You may never have an opportunity of actually meeting anyone who holds this opinion, because in Western countries most people take the advantage of modern technology for granted. But if you want to make sure that you are right in agreeing with the prevailing opinion, you will find it a good plan to test the arguments that occur to you by considering what Gandhi might have said in refutation of them. I have sometimes been led actually to change my mind as a result of this kind of imaginary dialogue. Furthermore, I have frequently found myself growing more agreeable through realizing the possible reasonableness of a hypothetical opponent. Most people are unlikely to be subject to silly errors
A. when they do not violate the rules of observation and imagination.
B. if they refute their opponents’’ opinions in a fairly reasonable way.
C. unless they are convinced of their unjustifiable knowledge of things.
D. until they reconcile with their opponents through imaginary dialogue
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If you intend using humor in your talk to make people smile, you must know how to identify shared experiences and problems. Your humor must be relevant to the audience and should help to show them that you are one of them or that you understand their situation and are in sympathy with their point of view. Depending on whom you are addressing, the problems will be different. If you are talking to a group of managers, you may refer to the disorganized methods of their secretaries; alternatively if you are addressing secretaries, you may want to comment on their disorganized bosses. Here is an example, which I heard at a nurses’’ convention, of a story which works well because the audience all shared the same view of doctors. A man arrives in heaven and is being shown around by St. Peter. He sees wonderful accommodations, beautiful gardens, sunny weather, and so on. Everyone is very peaceful, polite and friendly until, waiting in a line for lunch, the new arrival is suddenly pushed aside by a man in a white coat, who rushes to the head of the line, grabs his food and stomps over to a table by himself. "Who is that" the new arrival asked St. Peter. "Oh, that’’s God,"came the reply,"but sometimes he thinks he’’s a doctor." If you are part of the group which you are addressing, you will be in a position to know the experiences and problems which are common to all of you and it’’ 11 be appropriate for you to make a passing remark about the inedible canteen food or the chairman’’ s notorious bad taste in ties. With other audiences you mustn’’ t attempt to cut in with humor as they will resent an outsider making disparaging remarks about their canteen or their chairman. You will be on safer ground if you stick to scapegoats like the Post Office or the telephone system. If you feel awkward being humorous, you must practice so that it becomes more natural. Include a few casual and apparently off-the-cuff remarks which you can deliver in a relaxed and unforced manner. Often it’’ s the delivery which causes the audience to smile, so speak slowly and remember that a raised eyebrow or an unbelieving look may help to show that you are making a light-hearted remark. Look for the humor. It often comes from the unexpected. A twist on a familiar quote "If at first you don’’t succeed, give up" or a play on words or on a situation.Search for exaggeration and understatements. Look at your talk and pick out a few words or sentences which you can turn about and inject with humor. To achieve the desired result, humorous stories should be delivered
A. in well-worded language.
B. as awkwardly as possible.
C. in exaggerated statements.
D. as casually as possible.
可以采用______的方法使并励直流电动机反转。
A. 对调转子绕组接头
B. 改变外加电压极性
C. 对调励磁绕组接头
D. 对调转子和励磁绕组接头
E. 改变转子绕组接头
下列关于三相异步交流电动机的叙述中,正确的有______。
A. 三相异步电动机可以通过改变转差率进行调速
B. 直接起动的电流约为额定电流的5~7倍,电动机严重过热,以致烧坏
C. 电动机在额定电压下起动称为直接起动
D. 直接起动的电路中,不需要时间继电器
E. 大功率的三相交流异步电动机可以采用星形—三角形降压启动
One of the questions that is coming into focus as we face growing scarcity of resources of many kinds in the world is how to divide limited resources among countries. In the international development community, the conventional wisdom has been that the 2 billion people living in poor countries could never expect to reach the standard of living that most of us in North America enjoy, simply because the world does not contain enough iron ore, protein, petroleum, and so on. At the same time, we in the United States have continued to pursue superaffluence as though there were no limits on how much we could consume. We make up 6 percent of the world’’s people; yet we consume one-third of the world’’s resources. As long as the resources we consumed each year came primarily from within our own boundaries, this was largely an internal matter. But as our resources come more and more from the outside world, "outsiders’’’ are going to have some say over the rate at which and terms under which we consume. We will no longer be able to think in terms of "our" resources and "their" resources, but only of common resources. As Americans consuming such a disproportionate share of the world’’s resources, we have to question whether or not we can continue our pursuit of superaffluence in a world of scarcity. We are now reaching the point where we must carefully examine the presumed link between our level of well-being and the level of material goods consumed. If you have only one crust of bread and get another crust of bread, your well-being is greatly enhanced. But if you have a loaf of bread, then an additional crust of bread doesn’’t make that much difference. In the eyes of most of the world today, Americans have their loaf of bread and are asking for still more. People elsewhere are beginning to ask why. This is the question we’’re going to have to answer, whether we’’re trying to persuade countries to step up their exports of oil to us or trying to convince them that we ought to be permitted to maintain our share of the world fish catch. The prospect of a scarcity of, and competition for, the world’’s resources requires that we reexamine the way in which we relate to the rest of the world. It means we find ways of cutting back on resource consumption that is dependent on the resources and cooperation of other countries. We cannot expect people in these countries to concern themselves with our worsening energy and food shortages unless we demonstrate some concern for the hunger, illiteracy and disease that are diminishing life for them. According to the text, it has long been believed that
A. people in poor countries fail to enjoy a higher standard of living.
B. people in underdeveloped countries are deprived of better living conditions.
C. most Americans know that the world’’s resources are going scarce.
D. it is impractical for all the people in the world to raise their living standards.