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The long years of food shortage in this country have suddenly given way to apparent abundance. Stores and shops are choked with food. Rationing is virtually suspended, and overseas suppliers have been asked to hold back deliveries. Yet, instead of joy, there is widespread uneasiness and confusion Why do food prices keep on rising, when there seems to be so much more food about Is the abundance only temporary, or has it come to stay Does it mean that we need to think less now about producing more food at home No one knows what to expect.The recent growth of export surpluses on the world food market has certainly been unexpectedly great, partly because a strange sequence of two successful grain harvests in North America is now being followed by a third. Most of Britain’s overseas suppliers of meat, too, are offering more this year and home production has also raised.But the effect of all this on the food situation in this country has been made worse by simultaneous rise in food prices, due chiefly to the gradual cutting down of government support for food. The shops are over- stocked with food not only because there is more food available but also because people, frightened by high prices, are buying less of it. Moreover, the rise in domestic prices has come at a time when world prices have begun to fall with the result that imported food, with the exception of grain, is often cheaper than the home- produced variety. And now grain prices, too, are falling. Consumers are beginning to ask why they should not be enabled to benefit from this trend. The significance of these developments is not lost on farmers.The older generations have seen it all happen before. Despite the present price and market guarantees, farmers fear they are about to be squeezed between cheap food imports and a shrinking home market. Present production is running at 51 percent above pre-war levels, and the government has called for an expansion to 60 percent by 1956; but repeated ministerial advice is carrying little weight and the expansion program is not working very well. The main purpose of the first paragraph is ().
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W: I want to register for this mathematics course.M: I’m sorry registration has dosed.W: Closed The clerk told me I could come back and register any time during the first week of classes.M: Well. that’s not possible The computer’s official student account has already been sent to the state, And that’s what our budget is based on. Who told you that anywayW: Some woman here when I tried to register three weeks ago. She said I just had to pay a late fee.M: She must have been a temporary worker. They don’t have much training. Why didn’t you register thenW: She said I couldn’t until I had my birth certificate Here it is.M: You birth certificateW: Well. I’m a new part-time student. So she asks for identification. I don’t drive so I don’t have a driver’s license.M: Huh. That’s no reason to demand a birth certificate. We only need to establish residency: a phone bill with your name and address on it would’ve been fineW: Really Only prove of my addressM: Yes. I’m afraid she gave you the wrong information. Still you’ll have to wait and take your math’s class next semester.W: But that’s not fair.M: Well, I sympathize with your problem, but frankly, I don’t think there is anything anyone can do for you. You were trapped in the system. If you want to, you can talk to the director. She will help you if she can.W: Great.M: Don’t get your hopes up. What problem does the woman have()
数据模型是严格定义的一组概念的集合。通常由数据结构、数据操作和 【17】 3部分组成。
Broadly speaking, the Englishman is a quiet, shy, reserved person who is fully (21) only among people he knows well.In the presence of strangers or foreigners he often seams inhibited. (22) embarrassed. You have only to (23) a commuter train any morning or evening to see the truth of this. Serious looking businessmen and women sit reading their newspapers or dozing in a corner; no one speaks. In fact, to do so would seem most unusual. (24) , there is here an unwritten but clearly understood code of behavior which. (25) broken, makes the person immediately the object of (26) .It is a well-known fact that the English have a (27) for the discussion of their weather and that, given half a chance, they will talk about it (28) . Some people argue that it is because English weather (29) forecast and hence is a source of interest and. (30) to everyone. This may be so. (31) Englishmen cannot have much (32) in the weathermen, who, after promising fine, sunny weather for the following day, are of- ten proved wrong (33) a cloud over the Atlantic brings rainy weather to all districts! The man in the street seems to be as accurate — or as inaccurate — as the weathermen in his (34) . The overseas visitors may be excused for showing surprise at the number of references (35) weather that the English make to each other in the course of a single day. Very often conversational greetings are (36) by comments on the weather. "Nice day, isn’t it" "Beautiful!" may well be heard instead of "Good morning, how are you" (37) the foreigner may consider this exaggerated and comic, it is worthwhile pointing out that it could be used to his ad- vantage. (38) he wants to start a conversation with an Englishman but is (39) to know where to begin, he could do well to mention the state of the weather. It is a safe subject which will (40) an answer from even the most reserved of Englishmen. 21().
存在于人和脊椎动物血清及组织液中的一组具有酶样活性的球蛋白称为( )
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