单选题The more civilized man has become,______he is limited by the disadvantage of his environment.

单选题 As viewed from space, the Earth's distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million km (93 million miles), the Earth is the third planet from the Sun and the fifth largest planet in the solar system. Its rapid and molten nickel-iron core give rise to an extensive magnetic field which, coupled with the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Most meteors burn up in the Earth's atmosphere before they can strike the surface. The planet's active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it was formed. The Earth has a single natural satellite-the Moon.

单选题Junk Hunting 淘旧货 Anyone who thinks exploration always involves long journeys should have his head examined.Or, better, he should put on his oldest clothes and go off in search of a junk shop. There are three kinds—one full of discarded books, one full of discarded Government equipment, and one full of discarded anything.A junk shop may have four walls and a roof,or it may be no more than a trestle-table in an open air market;but there is one infallible test:no genuine junk shopkeeper will ever pester you to make up your mind and buy something. And you are no true junk shopper if you march purposefully round the shop as if you knew exactly what you wanteD．You must browse, gently chewing the cud of your idle thoughts, and nibbling here and there as a sight or a touch of the goods that lie about you. Yet you must also possess a penetrating glance, darting your eyes about you to spot the treasures that may lurk beneath the rubbish. This is what makes junk shopping such a satisfying voyage of exploration. You never know what interesting and unexpected thing you may discover next. For in a true junk shop, not even the proprietor is always quite sure what his dusty stock conceals. There is always the chance that you may pick up a first edition, a pair of exotic ear-rings, a piece of early Wedgwood china, or a cine camera—and possess it for the price of fifty cigarettes. But this kind of treasure hunt is only a sideline to the true junk shopper. The real attraction lies in finding something that catches your own especial fancy, though everybody else may pass it by. An ancient tarnished clock, whose brass beneath your hands will shine anew; empty boxes that you can see transformed into the framework of a bookcase; an old bound volume of magazines of three-quarters of a century ago, which will shed strange sidelights on the ways our great-grandparents behaved and looked at life. When you begin junk shopping, half the attraction is that you go with absolutely no intention of buying anything. You spend your first couple of Saturday afternoons ambling around among dusty shelves, savouring a page or a chapter as you please, or fingering the piles of oddments that litter counters or tables. At first, be warned, don't try to buy. You may, indeed you should, ask the price of this and that; but just to give you an idea of what the junk shopkeeper thinks you might be willing to pay him. Later, you will find yourself returning a second and third time to something that has caught your fancy. And when you can hold back no longer, bargaining begins in earnest. This is the other great attraction of the true junk shop. Not only may it hold every conceivable product from every imaginable country; it also transports you to the mediaeval market place or the oriental bazaar, where no price is fixed until buyer and seller have waged a friendly war together, and proved each other's mettle. And this is where your old clothes become important: let no one take you for a rich connoisseur, or you will find yourself paying a rich man's prices. And avoid at all costs the suspicion of an American accent, or in spite of the good nature of all good junk shopkeepers, you will be for it.

单选题This computer is up-to-date "______" a few shortcomings here and there. A. except B. except for C. except that D. but

单选题He didn't to return earlier than 3 o'clock. A. was not expected B. did not expect C. was expected not D. was not expecting

单选题Grover Cleveland was the first president ______ in the White House.

单选题Whatever happened, our people will always stand______you.

单选题Since Jonas Salk {{U}}came up with{{/U}} his polio vaccine, infantile paralysis has virtually disappeared from the United States.

单选题If you had done as I told you, this______.

单选题He cannot see anything without his glasses, so he made a ______ of remembering to get them fixed before he went to work. A. chore B. success C. point D. mess

单选题{{U}}When{{/U}} he fails his final examination, he is sure of a university place.

单选题After four years in America．he got______. A．a degree of doctor B．a doctor's degree C．the degree of a doctor D．a doctor degree

单选题He was so disappointed that he angrily chose______music he could find in the hope that it might at least seem funny.

单选题The boy had a bad fall. Will somebody send along a doctor?

单选题______superstitious beliesfs about the mandrake plant. A．People have had long B．Have people long had C．People have long had D．Long have had people

单选题No such weapons were used and none been found.

单选题Traffic is a perennial problem in Hong Kong. Over the years many suggestions have been 61 to ease transport difficulties. These include from constructing wider roads and an underground railway 62 to staggering hours for schools to open and close. One official report pressed 63 for working hours to be spaced out to 64 congestion at 65 periods. In England and other countries this system is called staggering working hours" because many business centers use it. It is 66 that greater working 67 can be achieved, employees are happier because they can arrange 68 personal working hours, buses and trains can be dispatched at suitable 69 , and so on. The idea of 70 working days follows on from staggering hour. Land in Hong Kong is extremely expensive, yet 71 and large, offices are empty at weekends and most evenings, too. This appears to be a waste of valuable assets and seems 72 in a place noted for its business 73 . 74 , Saturday and Sunday working is not easy. Church-going and family needs can"t be 75 , but it should be remembered that many already work at 76 hours. Nurses, firemen, doctors, pilots, TV stars, 77 , have to come to grips with the problems. It seems 78 to assume that others could do the same. In fact they might find some 79 in having a day or two 80 during the week.

单选题A man or woman makes direct contact with society in two ways: as a member of some Ufamilial/U, professional or religious group, or as a member of a crowd.

单选题At the beginning of the twentieth century, North American society held, as an ideal, the Nuclear Family. This presumably perfect residential, social, and economic unit consisted of an adult male, an adult female and their minor children. This structure was thought to be stable and long lasting. However, a few decades later, the structure of that ideal family was being altered radically even while it was being touted as the structure to be aimed for. Popular magazines bemoaned the loss of the Nuclear Family and its replacement with inferior forms. There are a number of factors that are acting in concert to apply pressure on the Nuclear Family and generate a variety of new structures. Some of these are: The definition of marriage has changed somewhat in that few people now consider it to last "until death do us part". The concept of monogamy (the marriage of one man and one woman) has been modified to a form now referred to as serial monogamy (the marriage of one man and one woman at a time). This reflects the increasing equality of women and men in terms of economic advantage and the recognition that many women no longer depend on men for their survival. Women are acquiring independence and have become empowered to make their own choices. With this independence, the need to form a relationship with a man becomes less important. This change embodies the concept that the marriage is temporary and can be terminated by either partner at any time. Associated with this, of course, is the relaxation of the divorce laws and the significant reduction of the shame that had one time been attached to divorce. The economy of North America has resulted in a two-tier system of a few rich who control most of the resources and a large portion of the population who control almost none of the resources. Because of this, many couples are forced to have both partners with full-time jobs outside the home. There are unintended byproducts of the need for a double income. The most important of these is the replacement of a mother-oriented socialization of children to a "stranger-oriented" socialization system reflected in the growth of the childcare industry. Also, either partner is financially able to end the marriage without significant hardship. The combination of these changes will in the coming decades have a profound effect on the structure of the family of North America. As a result, the family will be a fluid, constantly changing structure with variable household arrangements as the norm.

单选题Current demographic trends, such as the fall in the birth rate, should favor ______ economic growth in the long run.