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更多“［A］ scarce ［B］ little ［C］ rare…”相关的问题
St. James in this passage is ______.
A．a small village
B．a little farm
C．a tiny city
D．a little town
A．terminal
B．benefit
C．fate
D．estimate
Mr. Harris cites the example of De Beers in order to show that______.
A．valuable things will value less in the connected world
B．feeling of dissatisfaction comes after easy fulfillment of desire
C．people are cheated to buy at a price higher than the real value
D．the more scarce a thing is, the more people treasure it
According to the passage, it has long been believed that ______.
A．people in poor countries scarcely know how to enjoy a high standard of living
B．the world's resources being limited, people in underdeveloped countries are bound to live a poor life
C．most Americans know that the world's resources of many kinds are becoming scarce
D．it is impossible for all the people in the world to improve their living standards
A.to avoid being eaten by arctic animals
B.because fertilizer is not readily available
C.to minimize exposure to the cold
D.because unfrozen water supplies are very scarce
When his master is moved to travel, the dog has to be on hand to help pull whatever load is put on the sledge(雪撬), and often such loads are very heavy. The Eskimo dog in his region is tough, savage, quarrelsome animal with a hairtrigger(一触即发的) temper. On his home ground he re quires stern handling--and he gets it.
An Eskimo uses his whip ______.
A．to kill animals when food is scarce
B．to earn his keep
C．with amazing accuracy
D．for making his dogs tough
It is not only luxuries which are wrapped in this way, With so many goods now produced centrally and sold in supermarkets it is becoming increasingly difficult to buy anything from nails to potatoes that is not already done up in plastic or paper.
The wrapper itself is of no interest to the shopper, who usually throws it away immediately. Useless wrapping accounts for much o the 31 pounds in weight of rubbish put out by the average London household each week. So why is it done？ Some of it, like the wrapping on meat, is necessary, but most of the rest is simply competitive selling. This is stupid. Packaging is using up scarce energy and raw materials and ruining all the time. One big firm reports that its glass, cans and paper have all gone up by 30 per cent in the last couple of months, while plastic has increased by 50 percent and all these prices are still rising. This seems as yet to have had surprisingly little effect on the packaging practice of manufacturers.
Little research is being carried out on the costs in energy and materials of other possible types of packaging. Just how practical is it, for instance, for local authorities to save waste paper and re-manufacture it as egg-boxes？ Would it be cheaper to plant another forest to produce new paper？
One reason for the unorganized behavior. of everyone concerned is probably the varied nature of the packaging industry. So many people, with so many different interests of their own, are affected that it is extremely hard to reach any agreement on what should be done. Also, packagers say that preserving forests and preventing waste is not their concerns.
The shopper gets rid of the wrapper immediately because______.
A．he is careless.
B．it adds to the weight.
C．it is difficult for him to handle.
D．it has no importance for him.
根据以下内容回答题：
No one knows for sure why birds migrate．One theory of migration says that ancient birds of the northern part of the earth were forced southward during the Ice Age，when ice covered large parts of Europe，Asia and North America．As the ice melted，the birds came back to their homelands，spent the summer，and then went south again in winter．Gradually，these comings and goings became habits，and birds now migrate though much of the ice has gone． Another theory proposes that the ancient home of all modern birds was the tropic areas．There lived so well that the region became overcrowded．Many species had to move northward．During the summer，these birds found plenty of room and food．In winter，however，food be-came scarce and they had to return to the south． A newer theory is that increasing daylight stimulates certain glands（腺）in the bird’s body and prepares it for migration．One scientist is able to make birds migrate in midwinter by expo-sing them for two months to artificial daylight．Recoveries of marked birds indicate that they fly north as soon as they are set free．The conclusion is that the urge to migrate is determined by changes in the bird’s body which take place under seasonal changes in the length of daylight． This theory would account for the fact that not all birds migrate at the same time．Each sDecies seems to have its own schedule．The theory would also account for the regular time and rou‘tes of migration．Birds arrive at a given place year after year．Unfavorable weather delays them only a few days．Total hours of daylight，rather than weather，start them on the way． How birds find their way to the same place year after year and why they follow their own Darticular route are still mysteries．They evidently do not follow known landmarks，for many young birds migrate alone without the help of experienced adults．
We can conclude from the first paragraph that__________ ．
A.during the Ice Age，the whole Europe was covered with ice
B.the south used to be the homelands of all birds
C.scientists can confidently explain why birds migrate now
D.migration of birds can be explained by the change of ice on earth
