题目内容

2.On December 14,NASA(National Aeronautics and Space) blasted a small but mighty telescope into space.The telescope is called WISE and is about as wide around as a trashcan.Don't let its small size fool you:WISE has a powerful digital camera,and it will be taking pictures of some the wildest objects in the known universe,including asteroids,faint stars,blazing galaxies and giant clouds of dust where planets and stars are born.
"I'm very excited because we're going to be seeing parts of the universe that we haven't seen before,"said Ned Wright,a scientist who directs the WISE project.
Since arriving in space,the WISE telescope has been circling the Earth,held by gravity in a polar orbit(this means it crosses close to the north and south poles with each lap (一圈).Its camera is pointed outward,away from the Earth,and WISE will snap a picture of a different part of the sky every 11minutes.After six months it will have taken pictures across the entire sky.
The pictures taken by WISE won't be like everyday digital photographs,however.WISE stands for"Wide-field Infrared Survey Explorer."As its name suggests,the WISE camera takes pictures of features that give off infrared radiation (红外线辐射).
Radiation is energy that travels as a wave.Visible light,including the familiar spectrum of Light(光谱) that becomes visible in a rainbow,is an example of radiation.When an ordinary digital camera takes a picture of a tree,for example,it receives the waves of visible light that are reflected off the tree.When these waves enter the camera through the lens,they're processed by the camera,which then puts the image together.
Waves of infrared radiation are longer than waves of visible light,so ordinary digital cameras don't see them,and neither do the eyes of human beings.Although invisible to the eye,longer infrared radiation can be detected as warmth by the skin.
That's a key idea to why WISE will be able to see things other telescopes can't.Not everything in the universe shows up in visible light.Asteroids,for example,are giant rocks that float through space-but they absorb most of the light that reaches them.They don't reflect light,so they are difficult to see.But they do give off infrared radiation,so an infrared telescope like WISE will be able to produce images of them.During its mission WISE will take pictures of hundreds of thousands of asteroids.
Brown dwarfs(褐矮星)are another kind of deep-space object that will show up in WISE's pictures.These objects are"failed"stars-which means they are not massive enough to jump start the same kind of reactions that power stars such as the sun.Instead,brown dwarfs simply shrink and cool down.They're so dim that they're almost impossible to see with visible light,but in the infrared spectrum they glow.

74.What is so special about WISEA?
A.Its digital camera can help astronomers to see the unknown space.
B.It is as small as a trashcan.
C.It is small in size but carries a large camera.
D.Never before has a telescope carried a digital camera in space.
75.The camera on WISED.
A.is not different from an ordinary camera
B.does not see infrared radiation while the ordinary camera does
C.reflects light that human eyes can see
D.catches the infrared radiation while the ordinary camera does not
76.Which of the following is NOT correct about"asteroids"according to paragraph 7B?
A.Asteroids do not reflect light that reaches them.
B.Asteroids float through space giving off visible light.
C.It is difficult to take asteroids'pictures by ordinary cameras.
D.The WISE telescope can take pictures of asteroids.
77.What is implied in the last paragraphC?
A.Brown dwarfs give off visible light.
B.Brown dwarfs are power stars like the sun.
C.Brown dwarfs give off infrared radiation.
D.Brown dwarfs are impossible to see with the WISE telescope.

分析 本篇文章主要介绍了WISE望远镜的特殊之处,它虽然体积小,但它的数码相机能拍到任何天体,所以能够帮助天文学家观测到宇宙空间中的未知天文现象.并对为什么它比其他普通镜头优越做了科学解释.

解答 74 A.细节理解题.短文的第一段的it will be taking pictures of some the wildest objects in the known universe和第二段内容可知,WISE 的特殊之处就在于它虽然体积小,但它的数码相机能拍到任何天体,所以能够帮助天文学家观测到宇宙空间中( in the known universe )的未知天文现象.且其他选项都不是短文表达的意思. 故选A.
75.D.细节理解题.短文第四段中ordinary digital cameras don't see them,and neither do the eyes of human beings以及最后一段That's a key idea to why WISE will be able to see things other telescopes can't可知,人类的肉眼和普通相机看到的光是可见光,看不见红外线辐射,而WISE 的相机能够看到. 故选D.
76.B.理解判断题.由最后一段中的they absorb most of the light that reaches them.They don't reflect light.小行星会吸收大多数光,不反射光,因此他们不会发光,B错误,故选B.
77.C.理解推断题. 最后一段的第一句Brown dwarfs(褐矮星)are another kind of deep-space object that will show up in WISE's pictures,褐矮星能出现在WISE 照片中.而据上文对WISE 望远镜的描述只有WISE 望远镜才能拍到红外线射线,所以推出褐矮星发出红外射线.故选C.

点评 科教类阅读难度比一般阅读较大,它存在的生词比较多,因此考生应当综合略读、跳读和查读,猜词等阅读技巧来做题,平时也应加强练习.

练习册系列答案
相关题目
7.Look at the keyboard of any standard typewriter or computer."Q","W","E","R","T"and"Y"are the first six letters.Who decided on this arrangement of the letters?And why?
People tried for centuries to invent the typewriter.In 1714in England,Henry Mill filed a patent for a machine called An Artificial Machine or Method for the Impressing or Transcribing of Letters,Singly or Progressively one after another,as in Writing.With this machine,whatever writing can be shown on paper or parchment,so neat and exact as not to be distinguished from print.That machine probably didn't sell because no one could remember its name!
The first practical typewriter was patented in the United States in 1868by Christopher Latham Sholes.His machine was known as the type-writer.It had a movable carriage,a lever for turning paper from line to line,and a keyboard on which the letters were arranged in alphabetical order.
But Sholes had a problem.On his first model,his"ABC"key arrangement caused the keys to jam when the typist worked quickly.Sholes didn't know how to keep the keys from sticking,so his solution was to keep the typist from typing too fast.Sholes asked his brother-in-law to rearrange the keyboard so that the commonest letters were not so close together and the type bars would come from opposite directions.Thus they would not clash together and jam the machine.The new arrangement was the QWERTY arrangement typists use today.Of course,Sholes claimed that the new arrangement was scientific and would add speed and efficiency.The only efficiency it added was to slow the typist down,since almost any word in the English language required the typist's fingers to cover more distance on the keyboard.
The advantages of the typewriter outweighed the disadvantages of the keyboard.Typists memorized the crazy letter arrangement,and the typewriter became a huge success.By the time typists had memorized the new arrangement of letters and built their speed,typewriter technology had improved,and the keys didn't stick as badly as they had at first.

41.Who invented the first practical typewriter?C
A.Henry Mill  
B.Sholes'brother-in-law
C.Christopher Latham Sholes      
D.Albert Einstein
42.The author thinks the machine invented by Henry Mill could not be sold becauseC.
A.it was difficult for people to accept new things
B.there were great disadvantages of the keyboard
C.the name of the machine was too long
D.the writing could not be distinguished from print
43.Sholes decided the QWERTY arrangement of the keyboard in order toB.
A.arrange the letters in alphabetical order
B.solve the problem of the keys jamming
C.cause the keys to jam when the typist worked quickly
D.compete with"ABC"key arrangement
44.We can infer that the QWERTY arrangement of the keyboardA.
A.keeps the typist from typing too fast       
B.adds speed and efficiency of typists
C.is easy for typists to memorize      
D.is the most scientific arrangement
45.Which of the following can be the best title of the passage?B
A.The Story of Christopher Latham Sholes    
B.The Arrangement of the Letters on Keyboard
C.How to Invent the Typewriter             
D.The First Practical Typewriter.
14.A.concentration
B.working from the base course
C.sticking to what you achieve
D.aiming high
E.Not putting all your eggs in one basket
F.reasons for failures in business

Road to Success
61.B
 Many of the leading businessmen of Pittsburgh had a serious responsibility thrust upon them at the initial stage of their career.They were introduced to the broom,and spent the first hours of their business lives sweeping out the office.I notice we have professional sweepers now in offices,and our young men unfortunately miss that useful branch of business education.But if by chance the professional sweeper is absent any morning,the boy who has the genius of the future partner in him will not hesitate to try his hand at the broom.It does not hurt the newest comer to sweep out the office if necessary.I was one of those sweepers myself.
62.D
Assuming that you have all obtained employment and are fairly started,my advice to you is to be ambitious.I would think nothing of the young man who does not already see himself the partner or the head of an important firm.Do not rest content for a moment in your thoughts as head clerk,or foreman,or general manager in any concern,no matter how extensive.Say to yourself,"My place is at the top."Be king in your dreams.
63.C
Persistence is the consistent factor in most people who succeed,no matter what they are succeeding at.Yet,in the work place we often seem to forget to persist what we are doing.It's easy to get discouraged when you continually try to achieve something and it doesn't work out.But remember that if you try long enough,hard enough and make adjustments along the way,sooner or later you will get to your goal.
64.A
And here is another prime condition of success,the great secret:focus your energy,thought,and capital totally upon the business in which you are engaged.Having begun in one line,resolve to fight it out on that line,to lead in it,adopt every improvement,have the best machinery,and know the most about it.
65.F
The companies which fail are those which have scattered their capital,which means that they have scattered their brains also.They have investments in this,or that,or the other,here there,and everywhere."Don't put all your eggs in one basket."is all wrong.I tell you to"put all your eggs in one basket,and then watch that basket."Look round you and take notice,men who do that not often fail.It is easy to watch and carry the one basket.It is trying to carry too many baskets that breaks most eggs in this country.He who carries three baskets must put one on his head,which is easy to fall and trip him up.
To summarize what I have said:aim for the highest; never enter a bar room; never speculate; never indorse beyond your surplus cash fund; make the firm's interest yours; put all your eggs in one basket,and watch that basket; for as Emerson says,"no one can cheat you out of ultimate success but yourselves."

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网