学科分类

已选分类 文学
问答题Please read the following article in Chinese carefully, and then write a summary of 200 words in English on the ANSWER SHEET. Make sure that you cover all the major points of the article. 科学家说,在第一批艾滋病例被发现以后的20年里,他们对这种病毒性疾病的了解已超过其他任何一种病毒性疾病。但是,联合国艾滋病规划署的负责人彼得?皮奥和国际艾滋病学会会长罗马的斯特凡诺?韦拉及其他一些专家都认为,全面考察那些尚未解决的问题,可能对艾滋病和其他疾病治疗的进展是一项有益的举措。 这些较广泛的重要科学问题包括: 为什么艾滋病使患者容易感染某些癌症和传染病? 一种传统的说法是,癌细胞在人体内不断繁殖,但受到健康免疫系统的控制。艾滋病的情况却不是这样。艾滋病人很容易患非何杰金氏淋巴瘤和卡波西氏肉瘤,但不易患美国最常见的乳腺癌、结肠癌和肺癌等。这说明,受损的免疫系统(至少是艾滋病患者的免疫系统)可以抑制普通癌细胞的发展。 艾滋病病毒侵入人体后通过什么途径摧毁免疫系统? 当艾滋病病毒通过性接触传播时,病毒必须穿过组织屏障进入人体。这个过程目前尚不清楚。病毒可能直接侵入,或许由一系列不同种类的细胞带入。最终,艾滋病病毒穿过淋巴管到淋巴结和淋巴系统的其他部分。但病毒是如何摧毁人体内负责打击入侵传染体的CD-4细胞的,目前还无法确定。 艾滋病病毒是怎样破坏免疫系统的? 艾滋病病毒能杀死对付自己的免疫细胞,但艾滋病病毒携带者患艾滋病的快慢却大不相同。因此科学家提出问题:免疫系统中那些使人患艾滋病时间出现差异的因素能否被识别出来?如果能,它们能否用于制止艾滋病患者病情的恶化,甚至在最初就可能防止人们感染艾滋病病毒? 最有效的艾滋病疗法是什么? 从理论上来说,尽早治疗可以提供维护免疫功能的最佳时机。但是新药物无法彻底清除体内的艾滋病病毒,因此患者不得不终身服用这些具有危险副作用的药物,而且还可能在产生抗药性时改服别的药物。因此新的方法可能建议在免疫系统出现衰退迹象时才开始治疗。 可能研制出疫苗吗? 毫无疑问,一种有效的疫苗是控制这种瘟疫的关键。但是目前只有一种疫苗进入了全面检验的阶段,而对其会有多大的保护功能,却有着很大的争议。世界各地流行的艾滋病在遗传类型上各不相同,目前还不清楚的是,从某种艾滋病病毒获得的疫苗能否防止其他类型的艾滋病。 如果没有疫苗,能否阻止艾滋病病毒的传播? 如果没有深入集中的行为研究,仅靠宣传是无法阻止这种全球性瘟疫的。
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问答题A Brief Introduction to a Tourist Attraction Your role: a tour guide Your audience: a group of foreign tourists Your introduction should include: (1) some welcoming words (2) the schedule for the day (3) a description of the place the tourists will be visiting (e. g. a scenic spot or a historical site, etc.)
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问答题The system of higher education in the United States is complex. It comprises four categories of institutions. The university, which may contain: (A) several colleges for undergraduate students seeking a bachelor's (four-year) degree and (B) one or more graduate schools for those continuing in specialized studies beyond the bachelor's degree to obtain a master or a doctoral degree; the four-year undergraduate institution— the college—most of which are not part of a university; the technical training institution, at which high school graduates may take courses ranging from six months to four years in duration and learn a wide variety of technical skills, from hair styling through business accounting to computer programming; and the two-year, or community college, from which students may enter many professions or may transfer to four-year colleges or universities. Any of these institutions, in any category, might be either public or private, depending on the source of its funding. There is no clear or inevitable distinction in terms of quality of education offered between the institutions which are publicly or privately funded; however, this is not to say that all institutions enjoy equal prestige nor that there are no material differences among them.
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问答题Doris Lessing
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问答题This part is to test your ability in practical writing. Now you are required to write a Letter of Invitation according to the information given in Chinese. Your writing should contain 100 to 120 words and you should write it on the Answer Sheet. 你叫李平,是学院学生会干部,获悉你的一位师兄王勇在毕业后工作仅一年,就被提升为公司销售部(Sales Department)经理,你写信邀请他来学院举办一场讲座,信的内容包括:消息的来源;表示高兴和祝贺;讲座内容(他成功的经验)。 温馨提示:不可将上面的说明文字直接翻译成英语;考生不能署真实姓名。
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问答题In this part, you are required to write an essay of no less than 200 words on Science and Humanity. The essay should be based on the outline below: 1. Your position on the topic; 2. Positive side of the issue; 3. Negative side of the issue; 4. Your suggestions.
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问答题Please read the following article in Chinese carefully, and then write a summary of 200 words in English on the ANSWER SHEET. Make sure that you cover all the major points of the article. 尽管冬季寒冷,但是仍需进行必要的体育锻炼。寒冷的气候条件下进行体育锻炼,一定要注意自我保健,否则,会适得其反,冻坏身体。冬季体育锻炼项目主要有滑冰、滑雪、晨练、冬泳等,下面结合冬季气候作介绍。 首先是着装问题。服装的隔热值必须与运动中增强的代谢产热过程平衡。在冷天中多穿衣服,衣服在皮肤之外包住一层温暖的空气,使传导散热过程减弱。但在运动时,机体的产热大大增加,如果穿得过多,反而有害,应穿轻便的衣服。这样在运动中产热增加时,可以方便地脱掉。近年来服装制造商在发展轻质服装方面不断改进,这样可以保证良好的隔热性,同时又保证了活动的自由性。 在寒冷环境下运动时,机体能量代谢增强,产热增加,此时机体血管扩展,大大降低了身体对寒冷的抵抗能力。因此,在运动间隙要特别注意保暖,及时加衣。寒冷环境中运动时能量消耗大,代谢水平高,使身体内的能源物质消耗增多,在代谢过程中还需要各种维生素的参与,如维生素B 1 、B 2 、B 3 、烟酸、维生素C等需求增加。 因此,对于从事滑冰、滑雪及在寒冷环境下锻炼者的膳食。应注意增加较多的热量。一般来说,冬季比春季从事同等强度的运动热量消耗高10%左右。据测算,一个成年人两小时的滑冰练习可增加消耗1000—1500千卡热量。在三大物质的比例中,因脂肪具有产热量多的特点,且增加脂肪有助于机体御寒,故应适当增加脂肪的供能比例,一般可占全部热量的25%一30%;而蛋白质也应偏高,占12%一18%;其余由糖来供给。体育运动者按每天消耗3500卡热量计算,蛋白质约需130克,脂肪150克,糖约480克,相当于每天应摄入米饭或馒头600克左右,鸡肉100克,瘦猪肉200克,鸡蛋两个,牛奶两杯,植物油50克等。 冰雪项目锻炼中,膳食中维生素也应相应增加,维生素C能增强人体对寒冷的适应能力。据文献,摄入大量维生素可明显减少寒冷环境中的体温下降幅度,缓解机体肾上腺的过度应激反应,增加机体耐寒能力。 冬泳是我国北方的一大特色,冬泳健身在理论上有其科学性,但冬泳毕竟是一项冒险的运动,必须掌握科学的方法。反之,就会影响身体健康,甚至诱发疾病。一是冬泳锻炼应从秋季的冷水浴开始,逐渐提高对寒冷的适应能力;冬泳期间应加强高能量饮食的补充,冬泳前不要喝酒;对于心、肝、肾有严重疾病的人或脑血管病、溃疡、关节炎患者,以及妇女在月经期均不宜冬泳。 冬季有晨练习惯的人,遇大雾天,最好在室内进行,一是雾天能见度低,容易发生交通事故;二是冬雾中含有对人体有害的酸和胺等污染物,吸人人体易引起气管炎、喉炎、结膜炎和一些过敏性疾病。另外,冬季晨练应尽量用鼻呼吸,鼻道能对吸入的冷空气预热,鼻粘膜能阻止吸入空气中的灰尘。对于严重的疾病患者,冬天的耐寒锻炼更应适度。锻炼时应根据病情变化适当减少或增加幅度,以防旧病复发。注意循序渐进,掌握体育锻炼与药物治疗相结合的原则。在天气过于寒冷时,最好不要外出锻炼。
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问答题The work is too difficult for you to finish.
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问答题{{B}}Directions:{{/B}} A) {{I}}Title: Parents are too Permissive with Their Children Nowadays{{/I}} B) {{I}}Your composition should be based on the Outline given in Chinese below:{{/I}} 1.孩子成为家庭的中心,父母日渐失去应有的权威。 2.父母对孩子的溺爱和忽视导致表少年犯罪。 3.孩子的生活过于安逸对他们日后的成长不利。 {{I}}You should write about 160-200 words neatly on ANSWER SHEET Ⅱ.{{/I}}
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问答题We are now in an inter-disciplinary integration era, the pervasion and cooperation among disciplines has become a general trend for the development of science. We wouldn't have today's advanced computer graphics systems if mathematician hadn't been able to solve problems related to surface geometric. We wouldn't have networks capable of handling massive amounts of data if physicists and astronomers hadn't continuously forged tools to look more deeply into subatomic structures and the cosmos. Chemists' efforts to simulate complex phenomtna and predict the properties of many-electron systems have inspired massively parallel architectures for computing. And the information made available by the sequencing of the human genome has caused us to rethink how to store, manipulate, and retrieve data most effectively. It will take new insights from studies of human cognition, linguistics, neurobiology, computing, and more to develop systems that truly augment our capacity to learn and create.
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问答题{{B}}Directions:{{/B}}A.Studythetwopicturesgivenbelowcarefullyandwriteanessayofabout200words.B.Youressayshouldcoverailtheinformationofthepicturesandmeetthefollowingrequirement:(1)interpretthepictures;(2)causesofthephenomenon;(3)yourcomments.
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问答题The Great Video Pacifier Last spring, my husband and I loaded our three children into the car and drove off to see friends in the United States. Over the course of a week, we visited half a dozen households, each with children of its own. 1 And I found myself struck, again and again, by the frequency with which we modern parents use television to silence young children. Get a couple of families together, and when noise from the kids rises too much, one goes the video and all is gratifying silence until the credits roll. 2 It"s like throwing a blanket over a noisy parrot"s cage: With one motion, the parrot"s stimulating surroundings vanish and its squawking instantly subsides. Hit the "play" button and the same thing happens. Children might be wrestling or running around, but let that mesmerizing box light up and they"ll stop to stare at the screen. Nearby, the adults smile as the caterwauling ceases: "Phew! That"s better." The video has become a member of every family I know. Need to finish a project on a Sunday afternoon? Popping a video buys you an hour or two. Often my children go to play in someone"s basement room and a video is on from the time they arrive until they leave. Guilty as I am myself. I find promiscuous use of this sedative disquieting. Children don"t stand a chance against videos. 3 No matter how imaginative or independent they may be or how much they may like playing with visiting friends, they cannot escape the stupefying effects of the box. 4 Child-development expert Paul Smith attributes this to the brain"s "orienting response", a reaction discovered by Parlor early in the last century. "We humans are programmed to look at abrupt changes in our Visual field." she writes, "It"s part of our survival mechanism. The colorful, quick images on TV are difficult to resist." 5 Years ago, I read in a newspaper about a study that found if people can choose between watching a lecturer behind a podium and a video projection of that same lecturer, they"ll gaze at the screen . The TV trumps real life every time.
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问答题信息安全问题日益重要 2.信息安全事故可能导致的危害 3.如何做到信息安全
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问答题Harlem Renaissance
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问答题Translate the following passage into Chinese. Write your translation on the ANSWER SHEET.(20 points) Montaigne fully accepted human weaknesses and understood that no philosophy could be effective unless it took into account our deeply ingrained imperfections, the limitations of our rationality, the flaws that make us human. It is not that he was ahead of his time; it would be better said that the later scholars(advocating rationality)were backward. He was a thinking fellow, and his ideas did not spring up in his tranquil study, but while on horseback. He went on long fides and came back with ideas. He was never a dogmatist: he was a skeptic with charm, a fallible * , personal, introspective writer, and, primarily, someone who, in the great classical tradition, wanted to be a man. fallible; able to make mistakes
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问答题大陆架
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问答题discount market
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问答题老子在中国传统思想史上的主要贡献表现在:一是提出了抽象的“道”,突出了宇宙的统一性,使中国传统思想从具体思维转向创造性的抽象思维:二是丰富发展了辩证法思想,使辩证思想成为中国古代思想的光荣传统:三是提出了一种逆向思维的模式,使道家思想与儒家思想并立互补,成为中国传统思想的两大主干思想。
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问答题cast pearls before a swine
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问答题Make a statement about the use of the techniques of stream of consciousness and interior monologue in modern American fiction.
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