The colour systems used by scientists and artists are completely different. An artist will mix blue and yellow paint to get a shade of green; a scientist will mix green and red light to create yellow. The printed page in a magazine is yet another system.
Scientists recognize the light primaries(原色) are red, green and blue. When mixed, red and green light rays produce yellow, blue and green produce cyan, red and blue produce magenta. Red, green and blue mix to create white light. This colour model is used in computer monitors, television sets and theaters.
Most artists recognize red, yellow and blue as the three basic primary colours. These primaries are the pure colours which cannot be created by mixing any other colours.
In the print industry, cyan (青色) , magenta ( 紫红色) , yellow and black are used as the primary colours. When you mix all the colours, the result is grey.
1.How many colour systems are mentioned in the passage?
A. Two. B. Three. C. Only one. D. Four.
2.If a scientist wants to get yellow, he will probably
A. mix blue and green B. mix blue and red
C. mix red and green D. mix red, green and blue
3.Which of the following is NOT true?
A. Red, green and blue are used in television sets.
B. Most artists think red, yellow and blue are the pure colours.
C. In the print industry, if you mix all the colours, you will get gray.
D. Scientists agree with artists on the colour systems.
I had walked along the sea for about an hour until I began to feel hungry. It was seven. At that time I was not far from a favourite ______ of mine, where I often went to eat two or three times a week. I knew the owner well.
I went into the restaurant, which was already crowded, and ordered my meal. While I was waiting, I looked _______to see if I knew anyone in the restaurant. Then I saw a man sitting at a corner table near the door keeping looking in my direction, as if he knew me. I certainly didn't know him, for I ______ forgot a face. The man had a newspaper ______ in front of him, _______I could see that he was keeping an eye on me. When the ______ brought my soup, the man was puzzled by the familiar_______ that waiter and I called each other. He could see that I was well taken in the restaurant. At last, he got up and went into the kitchen. After a few minutes he came out again, _____ for his meal and left.
When I had finished, I called the owner of the restaurant and asked him ______ the man had wanted. The owner told me he was a detective. "Really?" I was ______. "He was certainly interested in ______. But why?" I asked.
"He followed you because he thought you were the man he was looking ______ ," the owner said. "When he came into the kitchen, he showed me a _______ of the man. You certainly looked like him! Of course, since we know you, I told him that he had ________ .'
It was lucky I came to a restaurant where I was known, or I might have been _____!
1.A. supermarket B. restaurant C. playground D. store
2.A. for B. at C. around D. like
3.A. always B. often C. sometimes D. never
4.A. open B. closed C. folded D. broken
5.A. and B. but C. so D. or
6.A. waiter B. cook C. cashier D. driver
7.A. person B. food C. way D. manner
8.A. paid B. took C. spent D. cost
9.A. that B. what C. when D. which
10.A. worried B. excited C. surprised D. sad
11.A. you B. her C. us D. me
12.A. up B. like C. at D. for
13.A. book B. photo C. paper D. magazine
14.A. made a mistake B. told the truth C. told a lie D. kept secret
15.A. punished B. awarded C. arrested D. encouraged
--The English exam is coming tomorrow! I'm worried about it.
-- I'm sure you will make it.
A. Bad luck. B. Don't mention it.
C. What a pity! D. Take it easy.
--When the road ? --last year.
A. does; build B. did; build C. was; built D. will; be built
_____ carefully, Michael! There’s a school ahead.
A. Drive B. To drive
C. Drove D. Driving
--How' 1 miss my parents and friends! I'll never stay out any more without my family.
-- , huh?
A. A miss is as good as a mile B. All roads lead to Rome
C. Good beginning is half done D. East or west, home is the best
