Waves that travel very long distances are called ( )
- 未知题型 The word 'diurnal'(Line 3, Para 3) is closest in meaning to______.A.day-and-night'sB.everydayC.two daysD.yearly
- 未知题型 We all know that the normal human daily cycle of activity is of some 748 hours' sleep alternating with some 16,417 hours' wakefulness and that, broadly speaking, the sleep normally coincides with the hours of darkness. Our present concern is with how easily and to what extent this cycle can be modifieD.The question is no mere academic onE.The ease, for example, with which people can change from working in the day to working at night is a question of growing importance in industry where automation calls for round-the-clock working of machines. It normally takes from five days to one week for a person to adapt to a reversed routine of sleep and wakefulness, sleeping during the day and working at night. Unfortunately, it is often the case in industry that shifts are changed every week: a person may work from 12 midnight to 8 A.m. one week, 8 A.m. to 4 p.m. the next, and 4 p. m. to 12 midnight the third and so on. This means that no sooner has he got used to one routine than he has to change to another, so that much of his time is spent neither working nor sleeping very efficiently.The only real solution appears to be to hand over the night shift to a number of permanent night workers. An interesting study of the domestic life and health of night shift workers was carried out by Brown in 1957. She found a high incidence of disturbed sleep find other disorders among those on alternating day and night shifts, but no abnormal occurrence of these phenomena among those on permanent night work.This latter system then appears to be the best long-term policy, but meanwhile something may be done to relieve the strains of alternate day and night work by selecting those people who can adapt most quickly to the Changes of routinE.One way of knowing when a person has adapted is by measuring his body temperaturE.People engaged in normal day-time work will have a high temperature during the hours of wakefulness and a low one at night; when they change to night work the pattern will only adjust gradually back to match the new routine and the speed with which it does so parallels, broadly speaking, the adaptation of the body as a whole, particularly in terms of performancE.Therefore, by taking body temperature at intervals of two hours throughout the period of wakefulness it can be seen how quickly a person can adapt to a reversed routine, and this could be used as a basis for selection. So far; however, such a form. of selection does not seem to have been applied in practicE.Why is the question of 'how easily people can get used to working at flight' no mere academic one?A.Because few people like to reverse the cycle of sleep and wakefulness.B.Because sleep normally coincides with the hours of darkness.C.Because people are required to work at night in some fields of industry.D.Because shift work in industry requires people to change their sleeping habits.
- 不定项选择 温度对保留的影响大。
- 未知题型 Many professions are associated with a particular stereotypE.The classic (1)_____ of a writer, for example, is (2)_____ a slightly crazy-looking person, (3)_____ in an attic, writing away furiously for days (4)_____ enD.Naturally, he has his favorite pen and note-paper, or a beat-up typewriter, (5)_____ which he could not produce a readable worD.Nowadays, we know that such images bear little (6)_____ to reality. But are they completely (7)_____? In the case of at least one writer, it would seem not. Dame Muriel Spark, who (8)_____ 80 in February, in many ways resembles this stereotypical 'writer'. She is certainly not (9)_____, and she doesn't work in an attiC.But she is rather particular (10)_____ the tools of her tradE.She insists on writing with a (11)_____ type of pen in a certain type of notebook, which she buys from a certain stationer in Edinburgh called James Thin. In fact, so (12)_____ is she that, if someone uses one of her pens by (13)_____, she immediately throws it away. And she claims she (14)_____ enormous difficulty writing in any notebook other than (15)_____ sold by James Thin. This could soon be a (16)_____, as the shop no longer stocks them, (17)_____ Dame Muriel's supply of 72-page spiral bound is nearly (18)_____.As well as her 'obsession' about writing materials, Muriel Spark (19)_____ one other characteristic with the stereotypical 'writer': her work is the most (20)_____ thing in her lifE.It has stopped her from marrying; cost her old friends and made her new ones, and driven her from London to New York to Rome, Today she lives in the Italian province of Tuscany with a frienD.A.drawingB.imageC.descriptionD.illustration
- 未知题型 According to the context, the word 'effluents' in ParA.1 is closest in meaning towastes.D.risks.
- 单项选择题 （ ）是一种最有效和最经济的策略形式。 A. 正面进攻 B. 包围进攻 C. 迂回进攻 D. 侧翼进攻
- 未知题型 The world is undergoing tremendous changes. The rise of globalization, both an economic and cultural trend that has swept throughout the world, has forged new ground as we enter the 21st century. But are the effects of globalization always positive? Some say no.Michael Tenet, head of the International Institute for Foreign Relations in Atlanta, is worried about current resentment throughout the world toward the rise of globalization. 'Ever since the 1980s and the economic collapse of the Asian Tigers in the late 1990s, there has been a re-evaluation of the role of globalization as a force for good,' he saiD.'Incomes in many countries has declined and the gap between the most rich and the most poor has been aggravateD.Without further intervention by governments, we could see a tragedy expressed in an increased level of poverty throughout the Latin America and AsiA.'Yet George Frank, an influential economist who works on Wall Street, sees no such danger 'Economic liberalization, increased transparency and market based reforms have positive effect in the long run, even if market mechanisms can produce short-term destabilization problems,' he saiD.'What is most important is that barriers to trade continue to fall so that active competition for consumer goods reduces prices and in turn raises the average level of incomE.'Others feel that globalization's cultural impact may be more important than its economic implications. Janice Yawee, a native of Africa, feels strongly that globalization is undermining her local culture and languagE.'Most of the world's dialects will become extinct under globalization. We're paving the world with McDonald's and English slang. It tears me up inside,' she saiD.Governments of different countries have had mixed responses to the wave of globalization. The United States is generally seen as an active proponent of greater free trade, and it certainly has enormous cultural influence by virtue of its near monopoly on worldwide entertainment. But other countries, most notably in Europe and developing nations, have sought to reduce the impact that globalization has on their domestic affairs.'When I was a boy we had very little to speak of,' says one Singaporean resident. 'Now our country has developed into a booming hub for international financE.' Others, however, are not so optimistiC.'Globalization is an evil force that must be halted,' a union official at a car plant in Detroit recently commented, 'It's sucking away jobs and killing the spirit of our country.'Notes:slang 俚语tear up 撕碎，挖开proponent 支持者，拥护者hub 轮毂，中心suck away 减少As for globalization, Michael Tenet's attitude to it is most probably one ofA.firm support.B.cautious approval.C.serious worry.D.strong repentancE.
- 单项选择题 机体免疫系统接受抗原刺激发生一系列反应，并以排出或分解该抗原为目的的反应过程
- 问答题 Mother: Tell us of the accommodations in steerage, Mr. Dawson. I hear they're quite good on this ship. Jack: The best I've seen, ma'am. Hardly any rats. Fiancé: Mr. Dawson is joining us from the third ____1______. He was of some assistance to my fiancée last night. Rose: It turns out that Mr. Dawson is quite a fine ____2______. He was kind enough to show me some of his work today. Fiancé: Rose and I differ somewhat in our ____3______ of fine art. Not to impugn your work, sir. Jack: Are these all for me? Molly: Just start from the outside and work your way in. Man: guy: He knows every rivet in her, don't you, Thomas? Rose: Your ship is a wonder, Mr. Andrews. Truly. Andrew: Thank you, Rose. Waiter: How do you take your caviar, sir? Jack: No caviar for me, thanks. Never did like it much. Mother: And where exactly do you live, Mr. Dawson? Jack: Right now, my address is the RMS Titanic. After that, I'm on God's good humor. Mother: And how is it you have means to travel? Jack: I work my way from place to place. You know, tramp steamers and such. But I won my ticket on Titanic here at a lucky hand at _4_________. A very lucky hand. Man: All life is a game of luck. Fiancé: A real man makes his own luck, Archie. Right, Dawson? Mother: And you find that sort of rootless ___5_____ appealing, do you? Jack: Yes, ma'am, I do. I mean, I've got everything I need right here with me. I got air in my lungs and a few blank sheets of paper. I love ___6_______ up in the morning not knowing what's gonna happen or who I'm gonna meet, where I'm gonna wind up. Just the other night I was sleeping under a ____7______ , and now here I am on the grandest ship in the world, having champagne with you fine people. (to the waiter)I'll take some more of that. I figure life is a _____8_____ and I don't intend on ____9______ it. You never know what hand you're gonna get dealt next. You learn to take life as it comes at you. Here you go, Cal. To make each day _______10___. Molly: Well said, Jack. Rose: To make it count.
- 单项选择题 德国教育家凯兴施泰纳认为实施公民教育的机构应该是 A、国民学校 B、现代学校 C、职业学校 D、劳作学校