2022年考博英语-天津师范大学考前模拟强化练习题（附答案详解）1. 单选题While the population of the United States includes a great variety of racial and ethnic back grounds, Japans population is （ ）.问题1选项A.autonomousB.homogeneousC.ambitiousD.anonymous【答案】B【解析】考查形容词辨析。autonomous意为“自治的”；homogeneous意为“同性质的，同类的”；ambitious意为“有雄心的”；anonymous意为“无名的”。句意：虽然美国的人口包括各种各样的种族和民族背景，但日本的人口是同性质的。2. 单选题In the atmosphere, carbon dioxide acts rather like a one-way mirror or the glass in the roof of a greenhouse which allows the suns rays to enter but prevents the heat from escaping.According to a weather experts prediction, the atmosphere will be 3C warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate. If this warming-up took place, the ice caps in the poles would begin to melt, thus raising sea level several metres and severely flooding coastal cities. Also, the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere, possibly resulting in an alteration of the earths chief food growing zones.In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming, in other words, by a warming on the scale that will possibly take place in the next fifty years from the burning of fuels.Satellite pictures show that large areas of Antarctic ice are already disappearing. The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the earth.However, most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling. Scientists conclude, therefore, that up to now natural influences on the weather have gone beyond those caused by man. The question is: Which natural cause has most effect on the weather?One possibility is the variable behavior of the sun. Astronomers at one research station have studied the hot spots and cold spots (that is, the relatively less hot spots) on the sun. As the sun rotates, every 27. 5 days, it presents hotter or colder faces to the earth, and different aspects to different parts of the earth. This seems to have a considerable effect on the distribution of the earths atmospheric pressure, and consequently on wind circulation. The sun is also changeable over a long term: its heat output goes up and down in cycles, the latest trend being downward.Scientists are now finding shared relations between models of solar weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is not. One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia of the earths climate. If this is right, the warming effect of carbon dioxide might thus be serving as a useful opposed balance to the suns fading heat.1.It can be concluded that a concentration of carbon dioxide in the atmosphere would （ ）.2.The article was written to explain（ ）.3.Although the fuel consumption is greater in the northern hemisphere, temperatures there seem to be falling. This is（ ）.4.On the basis of their models, scientists believe the opinion that （ ）.5.If the assumption about the delay of a new Ice Age is correct, （ ）.问题1选项A.prevent the suns rays from reaching the earths surfaceB.mean a warming-up in the ArcticC.account for great changes in the climate in the northern hemisphereD.raise the temperature of the earths surface.问题2选项A.the greenhouse effectB.the solar effects on the earthC.the models of solar-weather interactionsD.the causes affecting weather问题3选项A.mainly because the levels of carbon dioxide are risingB.possible because the ice caps in the poles are meltingC.exclusively due to the effect of the inertia of the earths climateD.partly due to variations in the output of solar energy问题4选项A.the climate of the world should be becoming coolerB.it will take thousands of years for the inertia of the earths climate to take effectC.the man-made warning effect helps to increase the solar effectsD.the new Ice Age will be delayed by the greenhouse effect问题5选项A.the best way to overcome the cooling effect would be to burn more fuels.B.ice would soon cover the northern hemisphere.C.the increased levels of carbon dioxide in the astrosphere could warm up the earth even more quickly.D.the greenhouse effect could work to the advantage of the earth.【答案】第1题:D第2题:D第3题:D第4题:A第5题:B【解析】第1题:推理判断题。文章第一段的内容为：在大气中，二氧化碳的作用就像一面单面镜子或温室屋顶上的玻璃，它允许阳光进入，但阻止热量溢出。因此选D，在大气中二氧化碳的浓度将提高地球表面的温度。第2题:主