单选题It was not until she arrived at the classroom {{U}}she realized{{/U}} she had forgotten her coursebook.

单选题The very real and far reaching implications inherent in the current changes being experienced by government spaceports, Uwith terms of/U their effect upon the whole international space community, are also highlighted.

单选题The field of medicine has always attracted its share of quacks and charlatans—disreputable women and men with little or no medical knowledge who promise quick cures at cheap prices. The reasons why quackery thrives even in modem times are easy to find. To begin with, pain seems to be a chronic human condition. A person whose body or mind hurts will often pay any amount of money for the promise of relief. Second, even the best medical treatment cannot cure all the ills that beset men and women. People who mistrust or dislike the truths that their physicians tell them often turn to more sympathetic ears. Many people lack the training necessary to evaluate medical claims. Given the choice between (a) a reputable physician who says a cure for cancer will be long, expensive and may not work at all, and (b) a salesperson who says that several bottles of a secret formula "snake oil" will cure not only cancer but tuberculosis as well, some individuals will opt for "snake oil". Many "snake oil" remedies are highly laced with alcohol or narcotic drugs. Anyone who drinks them may get so drunk or stoned that they drown their pains in the rising tide of pleasant intoxication. Little wonder that "snake oil" is a popular cure-all for minor aches and hurts ! But let there be no misunderstandings. A very few "home remedies" actually work. However, most remedies sold by quacks are not only useless, but often can be harmful as well.

单选题Consumer porcelains in Jingdezhen are not selling well in export market as compared with those made in Liling, Hunan Province and Zibo, Shandong Province.

单选题The advertisement for Super Suds detergent ______ that the sale has increased by 25 % in the first quarter of the year.

单选题Convergence of satellite and terrestrial telephony is certain to deepen as the technical Uhurdles/U of multi-standard handset development and infrastructure integration fall.

单选题Despite a flurry of diplomatic activity in Geneva, prospects for a peace settlement seemed as ______ as ever.

单选题Not until the advent of histochemistry could the anatomist see through the microscope which ceils carry specific enzymes or gauge how active these enzymes are in different cells under various conditions.

单选题Since it was so difficult for American Indians to negotiate a peace treaty or declare war in their native language, they used a universal understood form of sign language.

单选题What may be the oldest fossil footprint yet found was discovered in June 1968 by William J. Meister, {{U}}a non-professional{{/U}} fossil collector.

单选题According to some recent reports, the urban masses, particularly middle-class women, are continuing their spirited ______ of new products.

单选题The microscope enables scientists to distinguish an incredible number and variety of bacteri

单选题In any business situation, there comes a time to bring to a Uclose deliberation/U, discussion and analysis, and to take action.

单选题A new big oilfield is reported______in the west of the country. A．to have been found B．to be found C．found D．having been found

单选题It was not until she arrived at the classroom she realized she had forgotten her coursebook.

单选题We cannot be ______ with him due to his misbehavior at the meeting yesterday.

单选题Criticism without suggesting areas of improvement is not ______ and should be avoided if possible. A. constructive B. productive C. descriptive D. relative

单选题Scarcely had the van turned the comer than the mirror came off.

单选题{{B}}Passage Three{{/B}} 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The senator agreed that his support of the measure would jeopardize his chances for reelection. A. benefit B. endanger C. hinder D. disturb