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大学英语考试题库

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4、If the earth were spinning just like a rubber ball， there would only be day and night on earth， but no seasons， and days would always be the same length as nights --- 12 hours each.But this is not how the earth spins.It spins with its axis tilted(倾斜).Its axis is always at the angle(角度)to the plane of its orbit(地球的轨道平面)--- an angle of about 231/2 degrees.It is this tilting that accounts for(说明，解释清楚)our four seasons and the lengthening and shortening of days and nights.For this reason also， the Equator(赤道)(an imaginary line (一条想象出来的线)drawn around the earth at equal distance from the two poles)is not always directly under the sun’s rays.For six months the earth is tilted towards the sun， and the Northern Hemisphere(北半球)gets more than its share(份量)of sunlight every day.Days are longer than nights， and what is more， the sun’s rays come down more perpendicularly(垂直地，直射地)instead of slanting down(斜射).

答案：答：如果地球完全像一个像皮球一样转动，那么地球上就只有白天黑夜，没有季节，而白天永远与夜晚一样长---各是十二小时。但是地球并不是那样转动的。它旋转时旋转时地轴是倾斜的。地轴同地球轨道平面总是成一个角度---大约是二十三度半的角度。
就是这样的倾斜度才使我们有四个季节，有昼夜长短的变化。由于同样的缘故，赤道(离两极距离相等的地方围绕地球的一条假想线)并不总是在阳光垂直照射之下。有六个月地球向太阳倾斜着，北半球就每天得到较多的阳光，白天比黑夜长，而且，阳光不是斜射，而是以比较直的角度向下照射。

大学英语考试题库

5、Next morning， four words from the book--- “take the long view” --- were still in my mind.At my desk， I had a long-view look at my problems.Once more， super-slow reading had given me not only pleasure but perspective， and helped me in my everyday affairs.I discovered its worth years ago … Previously， if I had not been really interested in a book， I would race from page to page， eager to know what came next.Now， I decided， I had to become a miser(吝啬鬼，守财奴)with words and stretch(拉伸，拖延)every sentence like a poor man spending his last dollar.I had started with the practical object of making my book last.But by the end of the second week I began to realize how much I was getting from super-slow-reading itself.Sometimes just a particular phrase caught my attention， sometimes a sentence.I would read it slowly， analyze it， read it again --- perhaps changing down into an even lower gear(速度，变速)--- and then sit for 20 minutes thinking about it before moving on.I was like a pianist studying a piece of music， phrase by phrase， rehearsing(演练，彩排)it， trying to discover and recreate exactly what the composer (作曲家)was trying to convey(表达).

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6、The pollution of groundwater by nitrates(硝酸盐)is of concern to public health authorities and environmental organizations because high nitrate concentration(高硝酸含量)s in drinking water can cause methaemoglobinaemia(高铁血红蛋白血)in infants.Another environmental problem associated with high nitrate concentration in groundwater is eutrophication(富营养化)of receiving waters(供水).Virtually all decisions about the control of nitrate pollution of ground water are made in the face of uncertainties that frustrate(阻止，挫败)efforts to guarantee the desired results.The decisions also have to be made in an adversarial(意见相左，敌对不可调和的)environment in which the goals of society and those of the agricultural sector(农业部门)are often different.

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7、Contracts， in law， is an agreement that creates an obligation binding upon the parties thereto.The essentials of a contract are as follows: (1)mutual assents; (2)a legal consideration(法律:约因、对价)， which in most instances need not pecuniary(与金钱有关的); (3)parties who have legal capacity to make a contract; (4)absence of fraud(欺诈，诈骗)or duress(胁迫); and (5)a subject matter that is not illegal or against public policy.In general， contracts may be either oral or written.Certain classes of contracts， however， in order to be enforceable， must be written and signed.These include contracts involving the sale and transfer of real estate(不动产); contracts to guarantee or to answer for(对…承担责任)the miscarriage(不履行合同)， debt， or default(拖欠)of another person， etc.

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8、I have always wondered at the passion many people have to meet the celebrated(名人).The “advantage” you acquire by being able to tell your friends that you know famous men proves only that your are yourself of small account.The celebrated develop a technique(技艺，技能)to deal with the persons they come across.They show the world a mask， often an impressive one， but take care to conceal(隐藏)their real selves.They play the part that is expected from them， and with practice learn to play it very well， but you are stupid if you think that this public performance of theirs corresponds(符合)with the man within.

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9、Prices determine how resources are to be used.They are also the means by which products and services that are in limited supply are rationed(定量配给)among buyers.The price system of the United States is a complex network composed of the prices of all the products bought and sold in the economy as well as those of a variety of services， including labor， professional， transportation， and public services.The interrelationships(相互关系)of all these prices make up the “system” of prices.The price of any particular product or service is linked to a broad， complicated system of prices in which everything seems to depend more or less upon everything else.

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大学英语考试题库

4、If the earth were spinning just like a rubber ball， there would only be day and night on earth， but no seasons， and days would always be the same length as nights --- 12 hours each.But this is not how the earth spins.It spins with its axis tilted(倾斜).Its axis is always at the angle(角度)to the plane of its orbit(地球的轨道平面)--- an angle of about 231/2 degrees.It is this tilting that accounts for(说明，解释清楚)our four seasons and the lengthening and shortening of days and nights.For this reason also， the Equator(赤道)(an imaginary line (一条想象出来的线)drawn around the earth at equal distance from the two poles)is not always directly under the sun’s rays.For six months the earth is tilted towards the sun， and the Northern Hemisphere(北半球)gets more than its share(份量)of sunlight every day.Days are longer than nights， and what is more， the sun’s rays come down more perpendicularly(垂直地，直射地)instead of slanting down(斜射).