【考研类试卷】考研英语-885及答案解析.doc
《【考研类试卷】考研英语-885及答案解析.doc》由会员分享,可在线阅读,更多相关《【考研类试卷】考研英语-885及答案解析.doc(22页珍藏版)》请在麦多课文档分享上搜索。
1、考研英语-885 及答案解析(总分:100.00,做题时间:90 分钟)一、Section Use of Eng(总题数:1,分数:10.00)Capital City and Smithsville are two fairly large towns in the midwest near Chicago. Neither is as well known as Chicago. (1) the inhabitants of both are equally proud of their (2) hometown.People in Capital City love its quiet
2、narrow (3) streets and its many small neighborhood parks, the boast (4) their hometown has no ugly slums, a low rate (5) crime, and very little heavy traffic. Because it is the seat of the state legislature, Capital City has many stately old buildings (6) the lawyers club in the park by the lake, an
3、d the country museum (7) its pioneer farm exhibits.Smithsville, (8) ,is a bustling, thriving, industrial center. It too has a lake, but (9) that of Capital City, its lake is the center of the citys industrial development. (10) trees and park benches, Smithsvilles lake is surrounded by factories and
4、smoking chimneys. Smithsville is also (11) its quieter neighbour in its style of (12) . The tall modern office buildings downtown, the new shopping center in the suburbs, and the wide crowded streets seem (13) to Smithsvilles residents than the old-fashioned neighbourhoods (14) .When people from the
5、 more rural city (15) from a visit to Smithsville, they always say, “Im glad to be home again. That lake makes me (16) . Its a fine place to visit, (17) I wouldnt want to live (18) .“ (19) a visit to Capital City, citizens of Smithsville say (20) the same.(分数:10.00)A.ButB.AndC.ThusD.ThereforeA.relat
6、iveB.respectableC.reliableD.respectiveA.tree-linedB.trees-liningC.trees-linesD.tree-liningA.aboutB.howC.thatD.ofA.inB.asC.atD.ofA.so thatB.so asC.such asD.such thatA.withB.inC.byD.besideA.on the other handB.as usualC.for exampleD.in the caseA.alikeB.unlikeC.likeD.asA.BesidesB.Taken into accountC.Ins
7、tead ofD.As forA.the same asB.different fromC.the same toD.different aboutA.architectureB.lifeC.pleasureD.peopleA.less attractiveB.much attractiveC.as attractiveD.more attractiveA.they live inB.they took placeC.it took placeD.they replacedA.goB.returnC.turnD.travelA.disappointedB.nervousC.satisfiedD
8、.unpleasantA.soB.as a resultC.butD.in a wordA.itB.thatC.hereD.thereA.WhenB.AfterC.BeforeD.UntilA.exactlyB.hardlyC.properlyD.leisurely二、Section Reading Co(总题数:0,分数:0.00)三、Part A(总题数:0,分数:0.00)四、Text 1(总题数:1,分数:10.00)Nuclear fission is the splitting of the nucleus of an atom. Only a few elements are s
9、uitable for use in this way, the most important ones being Uranium-235, Uranium-233, and Plutonium-239. When a nucleus of one of these elements is struck by a free neutron it breaks down into two lighter nuclei which fly apart at high speed, colliding with surrounding atoms. Their kinetic energy is
10、converted into heat energy. At the same time, two or three free neutrons are released and one of them enters the nucleus of a neighbouring atom, causing fission to occur again; and so on. The reaction spreads very quickly, with more and more heat energy released. This is called a “chain“ reaction be
11、cause the splitting of each nucleus is linked to another, and another and another.If this reaction takes place in an atomic bomb, where nothing is done to slow it down, the result is a violent explosion that can destroy a town in a few seconds. Fission can also, however, take place within a construc
12、tion called a nuclear reactor, or atomic pile. Here the highly fissile material (U-235, U-233, Pu-239) is surrounded by a substance that is non-fissile, for instance graphite. This material is called a moderator. The neutrons lose some of their energy and speed through colliding with the atoms of th
13、e moderator. Energyheat energyis still created on an enormous scale, but no expansion takes place. The moderator has another function: by slowing down the speed of the free neutrons, it makes it more likely that one of them will collide with the nucleus of a neighbouring atom to continue the chain r
14、eaction.The chief advantage of nuclear energy is that it does not depend on any local factors. A nuclear reactor, unlike an oil-well or a coalmine, does not have to be sited on top of a fossil-fuel source; unlike the solar energy unit, it does not have to go out of production when the sun is not shi
15、ning; unlike hydro-electric power, it does not depend on a large flow of water which may be reduced during some seasons of the year. With an atomic power station, the only limiting factor is that of safety.In the opposite process, nuclear fusion, two nuclei come together, to form a new nucleus of a
16、different kind and this process also releases energy on an enormous scale. Fusion can only occur under conditions of very great heatat least 50000000 degrees Celsius. (The temperature at the centre of the sun is estimated as 130000000 degrees Celsius.) A fusion reaction on earth has already been cre
17、atedthe hydrogen bomb. This is an uncontrolled reaction. It is not yet possible to produce a controlled fusion reaction that can be used for the production of useful energy.Nuclear energy can be thought of as a kind of square, Three of the quarters of the square are known and used, but the fourth ca
18、nnot yet be used.(分数:10.00)(1).Which of the following headings is that of Paragraph Two?(分数:2.00)A.Nuclear FusionB.The Nuclear Fission Chain ReactionC.Uncontrolled and Moderated Nuclear ReactionsD.The Advantages of Nuclear Energy(2).The aim of a nuclear reactor is _.(分数:2.00)A.to establish a control
19、led chain reaction in low concentrations of fissile materialB.to absorb neutrons travelling at a particular speedC.to cause a rapid chain reaction in order to realease the greatest amount of energyD.to last the chain reaction forever(3).Destructive weapons can be obtained from _.(分数:2.00)A.nuclear f
20、usionB.nuclear fissionC.both nuclear fusion and nuclear fissionD.nuclear splitting(4).In nuclear fusion, two nuclei come together and _.(分数:2.00)A.form a new nucleusB.both splitC.give off free neutronsD.reduce energy(5).Which of the following statements is incorrect?(分数:2.00)A.Few elements are suita
21、ble for use as atomic fuel.B.An atomic power station can supply the same quantity of energy all the year round.C.A hydro-electric power station can be built anywhere.D.Graphite is a non-fissile material.五、Text 2(总题数:1,分数:10.00)The period of adolescence, i.e., the period between childhood and adultho
22、od, may be long or short, depending on social expectations and on societys definition as to what constitutes maturity and adulthood. In primitive societies adolescence is frequently a relatively short period of time, while in industrial societies with patterns of prolonged education coupled with law
23、s against child labor, the period of adolescence is much longer and may include most of the second decade of ones life. Furthermore, the length of the adolescent period and the definition of adulthood status may change in a given society as social and economic conditions change. Examples of this typ
24、e of change are the disappearance of the frontier in the latter part of the nineteenth century in the United States, and more universally, the industrialization of an agricultural society.In modern society, ceremonies for adolescence have lost their formal recognition and symbolic significance and t
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
2000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 考研 试卷 英语 885 答案 解析 DOC
