The television camera is rather like the human eye. Both the eye and the camera have a lens(镜头)，and both produce a picture on a screen. In each case the picture is made up of millions of spots of light.?

Let us see how the eye works. When we look at an object a person, a house, or whatever it may be .we do not see all the details of the object in one piece. We imagine what we do, but this is not the case. In fact, the eye builds up the picture for us in our brain, which controls our sight, in millions of separate parts, and, although we do not realize it, all these details are seen separately.?

This is what happens when we look at something. Beams of light of different degrees of intensity（强度）, reflected from all parts of the object, strike the lens of the eye. The lens then gathers together the spots of light from these beams and focuses them on to a light sensitive plate the retina（视网膜） at the back of the eyeball. In this way an image of the object is produced on the retina in the form of a pattern of lights.?

The retina contains millions of minute light sensitive elements, each of which is separately connected to the brain by a tiny fibre in the optic（视力的）nerve. These nerve fibres, working independently, pick out minute details from the image on the retina and turn the small spots of light into nerve impulses（冲击）of different strengths. They then transmit these impulses to the brain. They do this all at the same time.?

All the details of the image are fed to the brain, and, as we have taught our brain to add them together correctly, we see a clear picture of the object as a whole.?Television, which means vision at a distance, operates on a similar principle.        A television picture is built up in thousands of separate parts.?

Beams of light reflected from the subject being televised strike the lens of the television camera, which corresponds to（相当于）the lens of the eye. The camera lens gathers together the spot of light from these beams and focuses an image of the subject on to a plate, the surface of which is coated with millions of photo electric elements sensitive to light.

1.In the first paragraph, we are told that the television camera is like the human eye in________

A. one way  B. two ways?C. three ways D. a large number of ways

2.Which of the following is NOT true according to the writer??

A. The eye produces a picture on a screen.?

B. Our sight is controlled by our brain.?

C. We see all the details of an object in one piece.?

D. The picture is made up of millions of spots of light.

3.All the rays of light reflected from objects are______________?

A. of the same intensity                B. not at all intense?

C. to some degree intense              D. of varying intensities

4.A camera lens focuses an image on to_____________.?

A. the subject B. a surface made up of millions of light sensitive elements?C. a television set   D. millions of photo electric beams of light

64.   These advertisements are most probably taken from         .

       A. a job application book                    B. a travel brochure 

       C. an entertainment magazine       D. the Internet

65.   If you are a native Chinese speaker from Jiangsu and fond of language teaching, you may

       contact         .

       A. Jane@conversation-piece.co.uk       B. astartuition@btinternet.com

       C. info@europlacements.it    D. frenchiefrenchcourse@hotmail.fr

66.   All of the four teaching jobs pay special attention to your         .

       A. speaking ability        B. writing ability

       C. master’s degree         D. teaching experience    

The television camera is rather like the human eye. Both the eye and the camera have a lens(镜头)，and both produce a picture on a screen. In each case the picture is made up of millions of spots of light.

Let us see how the eye works. When we look at an object a person, a house, or whatever it may be .we do not see all the details of the object in one piece. We imagine what we do, but this is not the case. In fact, the eye builds up the picture for us in our brain, which controls our sight, in millions of separate parts, and, although we do not realize it, all these details are seen separately.

This is what happens when we look at something. Beams of light of different degrees of intensity（强度）, reflected from all parts of the object, strike the lens of the eye. The lens then gathers together the spots of light from these beams and focuses them on to a light sensitive plate the retina（视网膜） at the back of the eyeball. In this way an image of the object is produced on the retina in the form of a pattern of lights.

The retina contains millions of minute light sensitive elements, each of which is separately connected to the brain by a tiny fibre in the optic（视力的）nerve. These nerve fibres, working independently, pick out minute details from the image on the retina and turn the small spots of light into nerve impulses（冲击）of different strengths. They then transmit these impulses to the brain. They do this all at the same time.

All the details of the image are fed to the brain, and, as we have taught our brain to add them together correctly, we see a clear picture of the object as a whole. Television, which means vision at a distance, operates on a similar principle.        A television picture is built up in thousands of separate parts.

Beams of light reflected from the subject being televised strike the lens of the television camera, which corresponds to（相当于）the lens of the eye. The camera lens gathers together the spot of light from these beams and focuses an image of the subject on to a plate, the surface of which is coated with millions of photo electric elements sensitive to light.

72. In the first paragraph, we are told that the television camera is like the human eye in__________________

A. one way                         B. two ways

C. three ways                      D. a large number of ways

73. Which of the following is NOT true according to the writer?

A. The eye produces a picture on a screen.

B. Our sight is controlled by our brain.

C. We see all the details of an object in one piece.

D. The picture is made up of millions of spots of light.

74. All the rays of light reflected from objects are______________

A. of the same intensity                 B. not at all intense

C. to some degree intense              D. of varying intensities

75. A camera lens focuses an image on to_____________.

A. the subject                    B. a surface made up of millions of light sensitive elements

C. a television set               D. millions of photo electric beams of light

 Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

Big climate changes in the last million years might have come from something very small: dust from outer space.

   Earth changes between ice ages and warm periods in a(n) __1.__ that includes several cycles, including a __2._ one that lasts 100,000 years. Scientists __3.__suggested this cycle might be due to changes in the inflow of cosmic(????) dust.

   The idea is that Earth _4.__above and below the imaginary plane that runs through the sun and Jupiter(???), completing a cycle every 100,000 years. So maybe it encounters __5._varying amounts of dust during each cycle that produce the climate trend.

   Now there is some __6.__, from ancient cosmic dust recovered in ocean-floor drilling near the Azores islands west of Portugal. The large quantity of the dust rises and falls with a wonderful 100,000 year cycle during the period analyzed, 253,000 years to 458,000 years ago. Periods of more dust are related to__7.__ climates.

   But that is a long way from showing that the dust __8.__ climate. Some scientists argue that it is not clear how cosmic dust would make the climate warmer while dust from volcanoes is known to make it cooler. They say the cosmic dust is so thin that it is hard to see how it could have any climate__9.__.

   Nevertheless, the new study shows scientists have to take the cosmic dust idea seriously.