新视野大学英语3期末试题(3)

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 the lens of the eye. The camera lens gathers together the spots of light from these beams and focuses an image of the subject on to a place, the surface of which is coated with millions of photo-electric elements sensitive to light.

The spots of light forming the image on the plate cannot be transmitted as light. So they are temporarily converted by an electronic device into millions of electrical impulses; that is, into charges of electricity.

These electrical impulses are then sent through space on a wireless wave to the homes of the viewers. They are picked up by the aerials and conveyed to the receivers — to the television sets. There, they are finally converted back into the spots of light that make up the picture on the television screen.

1. In the first paragraph we are told that the television camera resembles the human eye in

________________.

A. one way B. two ways

C. three ways D. a large number of ways

2. The retina is _______________.

A. a lens B. a beam of light

C. a part of the brain D. a light-sensitive plate

3. The nerve fibers connecting these light-sensitive elements to the brain ________________.

A. all work together B. help each other

C. work independently D. work in small groups

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

5. The spots of light forming the image on the plate in a television camera are converted into

_____________.

A. electricity B. pictures C. an electronic device D. a wireless

Passage two

At sixteen Ron Mackie might have stayed at school, but the future called to him excitedly. “Get out of the classroom into a job,” it said, and Ron obeyed. His father, supporting the decision, found a place for him in a supermarket. “You’re lucky, Ron,” he said. “For every boy with a job these days, there’s a dozen with-out.” So Ron joined the working world at twenty pounds a week. For a year he spent his days filling shelves with tins of food. By the end of that time he was looking back on his school-days as a time of great variety and satisfaction. He searched for an interest in his work, with little success.

One fine day instead of going to work Ron got a lift on a lorry going south. With nine pounds in his pocket, a full heart and a great longing for the sea, he set out to make a better way for himself. That evening, in Bournemouth, he had a sandwich and a drink in a café run by an elderly man and his wife. Before he had finished his sandwich, the woman had taken him for the rest of

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