The most convincing evidence of black holes comes from research into binary(由兩部分組成的) 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：補全短文 (第46～50題，每題2分，共10分)-
閱讀下面的短文，文章中有5處空白，文章后面有6組文字，請根據(jù)文章的內(nèi)容選擇5組文字，將其分別放回文章原有位置，以恢復(fù)文章原貌。請將答案涂在答題卡相應(yīng)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)
Once in your seat．simply pause for a few seconds and collect your thoughts．Close your eyes and take in a few slow,deep breaths to help you relax．When you turn over the test paper,
spend a short period reading through all the instructions and questxons，paying particular attention to key verbs such as"discuss"，"compare"and"evaluate"． (48)It is always wise to allow 10 minutes at the end of the exam to give yourself time to go back over your answers. Once you have selected the questions you wish to tackle，begin by attempting the one you think is your strongest．It will give you more confidence when you see a well-answered question down on paper Also remember to write clearly,and do not be afraid to express the unexpected：alter all，examiners call get very bored marking stereotypical(千篇一律的)answers．
(49)If you do need something else to focus on to help you collect your thoughts，choose a fixture(固定設(shè)施)in the room，Such as the ceiling-or anything else that will not allow you to be distracted．
Finally，once you have finished，never hang around outside afterwards to attend the discussion by other students． (50)
A Do not arrive too early,though，as other people's anxiety can be contagious(傳染性的),and you may suffer from undue panic．
B Try not to be tempted to look at those around you，or at the clock.
C When you get home．read the examination paper through and look up all the words you didn't understand．
D Sleep，exercise and relaxation are all just as important.
E Map out a quick plan of points you wish to make and how much time you should spend on each question．
F Go and have。a well．earned rest-then prepare for your next exam．
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：補全短文 (第46～50題，每題2分，共10分)-
閱讀下面的短文，文章中有5處空白，文章后面有6組文字，請根據(jù)文章的內(nèi)容選擇5組文字，將其分別放回文章原有位置，以恢復(fù)文章原貌。請將答案涂在答題卡相應(yīng)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)
Once in your seat．simply pause for a few seconds and collect your thoughts．Close your eyes and take in a few slow,deep breaths to help you relax．When you turn over the test paper,
spend a short period reading through all the instructions and questxons，paying particular attention to key verbs such as"discuss"，"compare"and"evaluate"． (48)It is always wise to allow 10 minutes at the end of the exam to give yourself time to go back over your answers. Once you have selected the questions you wish to tackle，begin by attempting the one you think is your strongest．It will give you more confidence when you see a well-answered question down on paper Also remember to write clearly,and do not be afraid to express the unexpected：alter all，examiners call get very bored marking stereotypical(千篇一律的)answers．
(49)If you do need something else to focus on to help you collect your thoughts，choose a fixture(固定設(shè)施)in the room，Such as the ceiling-or anything else that will not allow you to be distracted．
Finally，once you have finished，never hang around outside afterwards to attend the discussion by other students． (50)
A Do not arrive too early,though，as other people's anxiety can be contagious(傳染性的),and you may suffer from undue panic．
B Try not to be tempted to look at those around you，or at the clock.
C When you get home．read the examination paper through and look up all the words you didn't understand．
D Sleep，exercise and relaxation are all just as important.
E Map out a quick plan of points you wish to make and how much time you should spend on each question．
F Go and have。a well．earned rest-then prepare for your next exam．