2022年考博英语-清华大学考前模拟强化练习题（附答案详解）1. 单选题When you prepare for your speech, be sure to cite（ ）qualified sources of information and examples.问题1选项A.unbiasedB.manipulatedC.distortedD.conveyed【答案】A【解析】形容词辨析。Unbiased 公正的, 无偏见的; manipulated 熟练控制的；distorted 扭歪的，受到曲解的；conveyed 传达的，传输的。句中 “qualified sources of information”应该指合格的信息, 故A项unbiased “公正不偏不倚的”符合逻辑。2. 单选题The collapse of the Earths magnetic field which guards the planet and guides many of its creatures appears to have started seriously about 150 years ago, the New York Times reported last week.The fields strength has decreased by 10 or 15 percent so far and this has increased the debate over whether it signals a reversal of the planets lines of magnetic force.During a reversal, the main field weakens, almost vanishes, and reappears with opposite polarity （极）.The transition would take thousands of years. Once completed, compass needles that had pointed north would point south. A reversal could cause problems for both man and animals. Astronauts and satellites would have difficulties. Birds, fish and animals that rely on the magnetic field for navigation would find migration confusing. But experts said the effects would not be a big disaster, despite claims of doom and vague evidence of links between past field reversals and species extinctions.Although a total transition may be hundreds or thousands of years away, the rapid decline in magnetic strength is already affecting satellites. Last month, the European Space Agency approved the worlds largest effort at tracking the fields shifts. A group of new satellites, called Swarm, is to monitor the collapsing field with far greater precision. “ We want to get some idea of how this would evolve in the near future, just like people trying to predict the weather，” said Gauthier Hulot, a French geophysicist working on the satellite plan. “Im personally quite convinced we should be able to work out the first predictions by the end of the mission. No matter what the new findings, the public has no reason to panic. Even if a transition is coming on its way, it might take 2, 000 years to mature. The last one took place 780,000 years ago, when early humans were learning how to make stone tools. Deep inside the Earth flow hot currents of melted iron. This mechanical energy creates electromagnetism. This process is known as the geophysical generator. In a cars generator, the same principle turns mechanical energy into electricity.No one knows precisely why the field periodically reverses. But scientists say the responsibility probably lies with changes in the disorderly flows of melted iron, which they see as similar to the gases that make up the clouds of Jupiter.1.According to the passage, the Earths magnetic field has（ ） .2.During the transition of the Earths magnetic field （ ）.3.The author says the public has no reason to panic” because（ ） .4.The cause of the transition of the Earths magnetic field comes from（ ） .问题1选项A.misguided many a man and animalB.begun to change in the opposite directionC.caused the changes on the polaritiesD.been weakening in strength for a long time问题2选项A.the compass will become uselessB.man and animals will be confused in directionsC.the magnetic strength of the Earth will disappearD.the magnetic strength of the Earth will be stronger问题3选项A.the transition is still thousands of years from nowB.the transition can be precisely predicted by scientistsC.the process of the transition will take a very long time to finishD.the new transition will come 780, 000 years from now问题4选项A.the movement deep inside the EarthB.the periodical reverses of the EarthC.the force coining from outer spaceD.the mechanical movement of the Earth【答案】第1题:B第2题:B第3题:C第4题:D【解析】1.细节题。文章前两段指出地球磁场开始发生变化，后来指出正在向相反的方向发生变化。故选B。2.细节题。根据题干关键词transition 定位至第三段。由此推测B项 “人和动物在方向上会混淆”正确。3.细节题。根据题干关键词public has no reason to panic定位至第五段。由此推测B项 “人和动物在方向上会混淆”正确。关键词public has no reason to panic后面就讲了原因: it might take 2, 000 years to mature(可能要2000年才能成熟)。 故选C。4.细节题。根据题干关键词cause of the transition of the Earths magnetic field 定位至最后一段:changes in the disorderly flows of melted iron, 即原因是地球内部深处流动着液体铁，这种机械能会产生电磁。3. 单选题Psychologists believe that children are easily influenced by their（ ）.问题1选项A.conditionsB.combinationsC.peersD.granaries【答案】C【解析】语义题。空格填入的词应与children同类型。因此C项peer （同龄人，同辈人）符合要求。4. 单选题（ ）and hard work are the cornerstones of this company.问题1选项A.MutilationB.InnovationC.EmpireD.Strength【答案】B【解析】语义题。句中and 连接空格跟hard work , 因此B 项innovation (创新，革新)正确。5. 单选题It is apparent that winning the scholarship is （ ）of ones intelligence in the field of physics.问题1选项A.parallelismB.alliterationC.testimonyD.rhythm【答案】C【解析】名词辨析。parallelism 平行，对应；allitera