问题 问答题 简答题

什么是太阳黄经?为什么太阳黄经及其变化能体现地球公转角度和角速度变化?

答案

参考答案:

太阳黄经是从春分点到太阳之间的黄道大圆弧角度,从春分点沿黄道向东度量为正。

②太阳黄经直接表达太阳在黄道上相对于春分点所转过的角度,因而也就体现着地球在公转轨道上相对于春分时位置所转过的角度,地球在轨道上转过多少度,太阳在黄道上也相应的黄经变化多少度,由于分至点或分至时位置相对恒星西移量很小,太阳黄荆叶可以说就是太阳周年视运动或地球公转中相对量转过的角度。由此缘故地球公转的不均性将在太阳黄经变化直接反映出来。例如,在近日点附近地球每日公转61´,太阳黄经也相应变化61´,远日点附近,地球公转57´/日,太阳黄经也相应每日变化57´。

多项选择题
填空题

[A] By contrast, somewhat more than 25 percent of the earth’s population can be found in the industrialized societies. They lead modern lives. They are products of the first half of the twentieth century, molded by mechanization and mass education, brought up with lingering memories of their own country’s agricultural past. They are, in effect, the people of the present.

[B] The remaining 2 or 3 percent of the world’s population, however, are no longer people of either the past or the present. For within the main centers of technological and cultural change, in Santa Monica, California and Cambridge, Massachusetts, in New York and London, and Tokyo, are millions of men and women who can already be said to be living the way of life of the future. Trend-makers often without being aware of it, live today as millions will live tomorrow. And while they account for only a few percent of the global population today, they are already from an international nation of the future in our midst. They are the advanced agents of man, the earliest citizens of the worldwide super-industrial society now in the throes of birth.

[C] It is, in fact, not too much to say that the pace of life draws a line through humanity, dividing us into camps, triggering bitter misunderstanding between parent and child, between Madison Avenue and Main Street, between men and women, between American and European, between East and West.

[D] What makes them different from the rest of mankind Certainly, they are richer, better educated, more mobile than the majority of the human race. They also live longer. But what specifically marks the people of the future is the fact that they are already caught up in a new, stepped-up pace of life. They "live faster" than the people around them.

[E] The inhabitants of the earth are divided not only by race, nation, religion or ideology, but also, in a sense, by their positions in time. Examining the present population of the globe, we find a tiny group who still live, hunting and food-foraging, as men did millennia ago. Others, the vast majority of mankind, depend not on bear-hunting or berry-picking, but on agriculture. They live, in many respects, as their ancestors did centuries ago. These two groups taken together compose perhaps 70 percent of all living human beings. They are the people of the past.

[F] Some people are deeply attracted to this highly accelerated pace of life--going far out of their way to bring it about and feeling anxious, tense or uncomfortable when the pace slows. They want desperately to be "where the action is." James A. Wilson has found, for example, that the attraction for a fast pace of life is one of the hidden motivating forces behind the much-publicized "brain-drain"--the mass migration of European scientists and engineers who migrated to the U. S. and Canada. He concluded that it was no higher salaries or better research facilities alone, but also the quicker tempo that lure them. The migrants, he writes, "are not put off by what they indicated as the ’faster pace~ of North America; if anything, they appear to prefer this pace to others."

[G] The pace of life is frequently commented on by ordinary people. Yet, oddly enough, it has received almost no attention from either psychologists or sociologists. This is a gaping inadequacy in the behavioral sciences, for the pace of life profoundly influences behavior, evoking p and contrasting reactions from different people. (578 words)

Notes: gaping是gape的现在分词;gape vi. 裂开。not too much 一点也不多,一点也不过分。Madison Avenue麦迪逊街(纽约一条街道的名字。美国主要广告公司、公共关系事务所集中于此。常用以表示此等公司之作风、做法等。)。Main Street 实利主义社会。food-foraging 觅食的。millennium 千年。trend-maker (=trend-setter) 领导新潮的人。in the throes of 为……而苦干、搏斗。be caught up in陷入。going far out of their way to bring it about 远远没有阻碍它的诞生。brain-drain (高科技)人才流动(从欧洲到美洲)。

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