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2009年职称英语考试理工类(B级)试题

[01-26 14:43:23] 来源：http://www.77xue.com 职称英语考试试题 阅读：8505次

概要：specific research into black holes．The most convincing evidence of black holes comes from research into binary(由两部分组成的) star systems．In some binary star systems，astronomers have shown that there is aninvisible companion star,a"partner"to the one which we can see in the sky．There is one star,called by its catalogue number HDE 226868．which must have a partner．This partner star,it seems．has a mass ten or twenty times greater than the sun-y

2009年职称英语考试理工类(B级)试题,标签：职称英语考试试题,职称英语考试答案,http://www.77xue.com
　　specific research into black holes．
　　The most convincing evidence of black holes comes from research into binary(由两部分组成的) star systems．In some binary star systems，astronomers have shown that there is an
　　invisible companion star,a"partner"to the one which we can see in the sky．There is one star,called by its catalogue number HDE 226868．which must have a partner．This partner star,it seems．has a mass ten or twenty times greater than the sun-yet we can't see it．Matter from HDE 226868 is being dragged towards this companion star．Could this invisible star,which exerts such a great force，be a black hole?Astronomers have evidence of a few other stars too，which might have black holes as companions．
　　4l Which of the following does NOT fit the definition of the black hole?
　　A The black hole is a region of space．
　　B The black hole sucks in any object that passes by it．
　　C The black hole is visible through an infrared telescope．
　　D The black hole has no matter．
　　42 Why does the author put"neutron star"in quotation marks?
　　A It is a special term of astronomy．
　　B It is an inventedterm．
　　C He is quoting an authority．
　　D He is using the term ironically．
　　43 What leads to the formation of a black hole?
　　A The structure of a star．
　　B A collision between two stars．
　　C The attraction of two large stars．
　　D The shrinking of a large star by its own gravitational force.
　　44 According to Einstein's theory,objects in the area of a black hole
　　A are gathered in its center．
B strike against one another frequently．
　　C do not have absolute space．
　　D are relatively brighter．
　　45 We learn from this passage that
　　A the sun is the heaviest star in the universe．
　　B a star in the sky might have an invisible partner．
　　C two black holes are dragged towards each other．
　　D the mass of a star is equal to that of its companion.
　　第5部分：补全短文 (第46～50题，每题2分，共10分)-
　　阅读下面的短文，文章中有5处空白，文章后面有6组文字，请根据文章的内容选择5组文字，将其分别放回文章原有位置，以恢复文章原貌。请将答案涂在答题卡相应的位置上。
　　How to Do Well in Exams
　　Do not underestimate(低估)the power of revision in the days and hours before an examination．The closer you are to the exam，the more chance you have of storing and retaining crucial information．But do not overdo it． (46)An effective daily routine can help you through an exam period，so in the days leading up to your first exam，get into the habit of being up and ready to work by game．It can be a shock to the system after months of working to your own timetable to be mentally alert at that time if you have not prepared for it．
　　On the day of the exam,have a good breakfast，pack two of everything you need (pens，pencils，erasers，etc．)，then make your way to the examination hall in good time． (47)

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