填空题It was once thought that the main difference between animals and plants was that the former could move about while the latter could not.

填空题In order to acquaint you ______ the textiles we handle, we take pleasure ______ sending you by air our latest catalogue for your perusal.

填空题Translate the following two Chinese paragraphs into English．(对外经济贸易大学2009研，考试科目：综合英语)发问是思想的进步，研究的动力。一切知识的获得，大都从发问而来；新发明、新创造也常常由发问开端。能发问、勤发问的人，头脑自然会日益丰富，眼光自然会日益敏锐。别人不肯动脑筋的地方，他偏会想出惊人的见解；别人以为平常的事物，他偏会看出不平常的道理。我们虽然不一定人人能成为大科学家、大思想家，但是不能不求知识，不能不明道理。要求知识、明道理，处处都会碰到问题。不能勤于发问，是多么可惜啊!

填空题It is hardly necessary to point out that we live in a world of increasing industrialization. While this process enables us to raise our standard of living at an ever-accelerating rate, it also leads to a corresponding growth of interdependence between the different regions of, the world. 41) ______. What, then, is to be done? Although it is difficult to know where to begin to deal with such a large subject, the first step is perhaps to consider the main economic difficulties an underdeveloped or emerging region has to face. 42) ______ A number of quite common occurrences are therefore sufficient to cause immediate-and serious interference with this. export production: unfavorable weather conditions, plant or animal epidemics, the exhaustion of soil fertility or mineral deposits, the development of substitute products in the industrialized regions, etc. The sensitivity of the economy is greatly intensified in cases where exports are confined only to one or two products--"monocultures" as they are sometimes called. 43) ______ This also applies to the manufactured goods required to provide their populations with the "necessities of life". This economic structure makes it difficult for them to avoid being politically dependent on the countries which absorb their exports and provide their essential imports. Since, under modern conditions, a rapid rise in population is a phenomenon closely associated with underdevelopment. This cause alone can subject the economy to severe and continuous stress. 44) ______ In the first place, to set up modern industries necessitates capital on a large scale, which only industrialized regions are able to provider secondly, they lack the necessary trained manpower; thirdly, their industries--when established--are usually not efficient enough to compete with foreign imports, and any restriction on these imports is likely to lead to counter-action against their own exports. From another point of view, it is necessary to bear in mind that there are invariably political, educational, social and psychological obstacles which tend to interfere seriously with any measures taken to deal with the economic difficulties outlined above.45) ______. To conclude, it seems clear that if we are to succeed in solving the many inter-related problems of underdevelopment, only the fullest and most intelligent use of the resources of all branches of science will enable us to do so. Notes: be orientated... toward 被引导到......。 monoculture 单一作物耕种。[A] For example, the economies of such countries are orientated primarily toward the production of raw materials, i. e. agricultural and mineral products; these are then exported to the industrialized countries.[B] Given these conditions, it is easy to see that any permanent economic or political instability in one area is bound to have an increasingly serious effect upon the rest of the world. Since the main source of such instability is underdevelopment, it is clear that this now constitutes a problem of international dimensions.[C] As far as "necessities of life" are concerned, they represent a concept which is continually being enlarged through the mass media of communication such as newspapers, films, the radio and advertising.[D] Although it is obvious that industrialization is the key to development, it is usually very difficult for emerging countries to carry out plans of this nature.[E] Being under-industrialized, these countries are largely dependent on imports to supply the equipment needed to produce the raw materials they export.[F] To consider 0nly one point: it is obviously useless to devote great efforts and expense to education, technical training and planning if, for psychological reasons, the population as a whole fails to turn theory into effective action.[G] This sudden increase in the population of the underdeveloped countries has come at a difficult time. Even if their population had not grown so fast they would have been facing a desperate struggle to bring the standard of living of their people up.

填空题This text is ______ than the one we learned last week． 这篇课文比我们上学期学的稍微难一点。

填空题The Atmosphere The atmosphere is a mixture of several gases. There are about ten chemical elements which remain permanently in gaseous form in the atmosphere under all natural conditions. Of these permanent gases, oxygen makes up about 21 percent and nitrogen about 78 percent. Several other gases, such as argon, carbon dioxide, hydrogen, neon, krypton and xenon, comprise the remaining one percent of the volume of the dry air. The amount of water vapor and its variations in amount and distribution is of extraordinary importance in weather changes. Atmospheric gases hold in suspension great quantities of dust, pollen, smoke and other impurities which are always present in considerable, but variable amounts. The atmosphere has no definite upper limits but gradually thins until it becomes imperceptible. Until recently it was assumed that the air above the first few miles gradually grew thinner and colder at a constant rate. It was also assumed that upper air had little influenceon weather changes. Recently studies of the upper atmosphere, currently being conducted by earth satellites and missile probing, have shown these assumptions to be incorrect. The atmosphere has three well-defined strata. The layer of the air next to the earth, which extends upward for about ten miles, is known as the troposphere (对流层). On the whole, it makes up about 75 percent of all the weight of the atmosphere. It is the warmest part of the atmosphere because most of the solar radiation is absorbed by the earth"s surface which warms the air immediately surrounding it. A steady decrease of temperature with the increasing elevation is a most striking characteristic. The upper layers are colder because of their greater distance from the earth"s surface and rapid radiation of heat into space. The temperatures within the troposphere decrease about 3.5 degrees per 1,000 feet increase in altitude. Within the troposphere, winds and air currents distribute heat and moisture. Strong winds, called jet streams are located at the upper levels of the troposphere. These jet streams are both complex and widespread in occurrence. They normally show a wave shaped pattern and move from west to east at velocities of 150 mph, but velocities as 400 mph have been noted. The influences of changing locations and strengths of jet streams upon weather conditions and patterns are no doubt considerable. Current intensive research may eventually reveal their true significance. Above the troposphere to a height of about 50 miles is a zone called the stratosphere. The stratosphere is separated from the troposphere by a zone of uniform temperatures called the tropopause. Within the lower portions of the stratosphere is a layer of ozone gases which filter out most of the ultraviolet rays from the sun. The ozone layer varies with air pressure. If this zone were not there, the full blast of the sun"s ultraviolet light would burn our skins, blind our eyes and eventually result in our destruction. Within the stratosphere, the temperature and atmospheric composition are relatively uniform. The layer upward of about 50 miles is the most fascinating but the least known of the three strata. It is called the ionosphere because it consists of electrically charges particles called ions, thrown from the sun. The northern lights (aurora borealis) originate within this highly charged portion of the atmosphere. Its effect upon weather conditions, if any, is as yet unknown. A. a layer of ozone gases. B. about 42 degrees colder than on the ground. C. earth satellites. D. less than 1% of xenon by volume. E. jet planes. F. is warmed by the earth"s heat. G. 50 miles above the troposphere.

填空题A. What have they found? B. Is it true that laughing can make us healthier? C. So why do people laugh so much? D. What makes you laugh? E. How did you come to research it? F. So what"s it for? G. When should laughing be banned? Why are you interested in laughter? It"s a universal phenomenon, and one of the most common things we do. We laugh many times a day, for many different reasons, but rarely think about it, and seldom consciously control it. We know so little about the different kinds and functions of laughter, and my interest really starts there. Why do we do it? What can laughter teach us about our positive emotions and social behaviour? There"s so much we don"t know about how the brain contributes to emotion and I think we can get at understanding this by studying laughter. 41. ______ Only 10 or 20 per cent of laughing is a response tohumour. Most of the time it"s a message we send to other people—communicating joyful disposition, a willingness to bond and so on. It occupies a special place in social interaction and is a fascinating feature of our biology, with motor, emotional and cognitive components. Scientists study all kinds of emotions and behaviour, but few focus on this most basic ingredient. Laughter gives us a clue that we have powerful systems in our brain which respond to pleasure, happiness and joy. It"s also involved in events such as release of fear. 42. ______ My professional focus has always been on emotional behaviour. I spent many years investigating the neural basis of fear in rats, and came to laughter via that route. When I was working with rats, I noticed that when they were alone, in an exposed environment, they were scared and quite uncomfortable. Back in a cage with others, they seemed much happier. It looked as if they played with one another—real rough and tumble—and I wondered whether they were also laughing. The neurobiologist Jaak Panksepp had shown that juvenile rats make short vocalisations, pitched too high for humans to hear, during rough and tumble play. He thinks these are similar to laughter. This made me wonder about the roots of laughter. 43. ______ Everything humans do has a function, and laughing is no exception. Its function is surely communication. We need to build social structures in order to live well in our society and evolution has selected laughter as a useful device for promoting social communication. In other words, it must have a survival advantage for the species. 44. ______ The brain scans are usually done while people are responding to humorous material. You see brainwave activity spread from the sensory processing area of the occipital lobe, the bit at the back of the brain that processes visual signals, to the brain"s frontal lobe. It seems that the frontal lobe is involved in recognising things as funny. The left side of the frontal lobe analyses the words and structure of jokes while the right side does the intellectual analyses required to "get" jokes. Finally, activity spreads to the motor areas of the brain controlling the physical task of laughing. We also know about these complex pathways involved in laughter from neurological illness and injury. Sometimes after brain damage, tumours, stroke or brain disorders such as Parkinson"s disease, people get "stonefaced syndrome" and can"t laugh. 45. ______ I laugh a lot when I watch amateur videos of children, because they"re so natural. I"m sure they"re not forcing anything funny to happen. I don"t particularly laugh hard at jokes, but rather at situations. I also love old comedy movies such as Laurel and Hardy and an extremely ticklish. After starting to study laughter in depth, I began to laugh and smile more in social situations, those involving either closeness or hostility. Laughter really creates a bridge between people, disarms them, and facilitates amicable behaviour.

填空题primary

填空题 Whenever some new and specialized field becomes a matter of public interest, there is usually a group of words that gain particular ____.

填空题Next, the scientist tries to learn 尽可能多 about it.

填空题They are determined to strike {{U}}regardless of what the law says{{/U}}.