[考研类试卷]考研英语(阅读)模拟试卷100及答案与解析.doc
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1、考研英语(阅读)模拟试卷 100 及答案与解析Part ADirections: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)0 Before there were black holes and stars and galaxies, the universe went through a period just after the big bang known as the Dark Age of the Universe t
2、hat lasted until evolving structure ultimately led to the first stars. Jordi Miralda-Escude, an astronomer at Ohio State University in Columbus, describes the Dark Age as the epoch when the universe had become completely dark as it gradually cooled following the big bang and “all the matter that for
3、ms us today was spread around space and uniformly distributed.“Little differences in the density of matter that had been present since the beginning of the universe gradually grew larger as a result of gravitational attraction. Eventually the density was large enough to cause a gravitational collaps
4、e and the first star was born. These first stars, according to Miralda-Escude, were likely quite massive and when they exploded as supernovae they littered the universe with atoms heavier than hydrogen and helium which were required for the formation of planets in the next generation of stars. “In t
5、he beginning, the universe contained only hydrogen and helium, but at the present time planets like the Earth are made of heavier atoms,“ he said. “They all come from stars. So all the atomic nuclei on which life is basedexcept for hydrogenwere made in stars.“One of the curiosities Miralda-Escude is
6、 trying to pin down is when the first star was born after the Dark Age began. “Imagine you are an observer floating in space and looking through the universe in the Dark Age and around you it is completely dark,“ he said. “The temperature is decreasing so the cosmic background light has all shifted
7、to infrared wavelengths, and there is nothing in visual light. Then, all of a sudden you see the first star appear in the distance.“Miralda-Escude estimates that the first visible star probably appeared about 75 million years after the big bang. Today, the universe is nearly 14 billion years old and
8、 contains billions of galaxies, each one with billions of stars.1 In the text, the “Dark Age of the Universe“ refers to_.(A)the formation of the first stars(B) a period during which black holes were prominent(C) a period following the big bang(D)the time before the universe began2 What caused the di
9、fferences in the density of matter to grow larger?(A)Gravitational attraction.(B) Little differences in the density of matter.(C) The big bang.(D)Massive stars.3 How does the article suggest the matter that makes up the Earth was first spread through the universe?(A)Through expulsion from black hole
10、s.(B) Through the explosions of stars.(C) Hydrogen propulsion.(D)Theoretical balancing.4 When does Miralda-Escude estimate the first star appeared?(A)75 million years ago.(B) 14 billion years ago.(C) 14 billion years after the big bang.(D)75 million years after the big bang.5 The text tells us that
11、the universe_.(A)was formed by a random observer(B) has been in existence for an infinite amount of time(C) has undergone change over time(D)is constantly expanding5 Improving information technology is crucial to helping the transportation industry strengthen systems critical to the global economy,
12、says Greg Smith of IBMs Transportation Industry group. Advances in Internet use and the adoption of Just In Time delivery, along with other technological advances, have played a significant role in helping the transportation industry to increase efficiencies, reduce costs, and boost sales. For examp
13、le, in 2000, transportation accounted for 9.9 percent of the gross domestic product, compared with 14.9 percent in 1990. Shippers, carriers, forwarders and others continue to realize major savings from improved inventory control management as a result of increased operational efficiencies.“Today, in
14、formation technology is delivering significant increases in efficiency to all stakeholders in transportation, transportation infrastructure and governments, however, most of the transport modes still work independently of each other,“ says Smith. “The industry is in dire need of an integrated, inter
15、national network of information that will not only continue to improve inventory management, increase efficiencies and result in cost benefits, but also enhance safety and security.“Recently, there has been much attention focused on shipping in relation to security and how technology can enable the
16、tracking of shipped goods from point of origin to delivery. “As the government begins defining security-related directives, and the transportation industry works toward integration of all transport modes, the industry must implement solutions that enable it to access data from a fully-integrated sys
17、tem of computing, communications and sensor technologies,“ Smith emphasized.Smith warns that transportation companies must also build information centers on open standards because connectivity is one of the most important factors in the industrys future success. The industry must also change its cul
18、ture and standards to exceed consumer demands in terms of improved customer service and added convenience. Many transportation companies have already transformed from a “push“-driven business modelmanufacturer influencedto a “puH“-driven business modeladded value to the customer. Connectivity is ess
19、ential to enhancing security and efficiency for transportation today and in the future.6 What do we learn from the text?(A)Information technology is important for the transportation industry.(B) The transportation industry has completed the task of using information technology to improve critical sy
20、stems.(C) Many people fail to realize the importance of the transportation industry.(D)Many people fail to realize the importance of information technology.7 Using the Internet has helped the transportation industry_.(A)communicate more efficiently with their customers(B) communicate with suppliers(
21、C) reduce costs(D)reduce the gross domestic product8 One result that information technology has brought about for the transportation industry is_.(A)an integrated, international network of information(B) enhancements in safety and security(C) a significant increase in efficiency(D)increased governme
22、nt regulation9 How does Smith suggest the transportation industry respond to governmental directives related to security?(A)By decreasing their reliance on information technology.(B) By studying various ways in which information technology can help improve security.(C) By implementing solutions allo
23、wing the industry to access data from a fully integrated system.(D)By defining security-related directives.10 Which of the following best reflects the authors view of the transportation industry?(A)The transportation industry is well prepared for the future.(B) In recent years, the transportation in
24、dustry has failed to develop.(C) Connectivity is one of the most important factors in the industrys future success.(D)More effort must be made to communicate effectively with manufacturers.10 No two economic crises are identical. But the same questions recur. How did we get into this mess? How can w
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