The colour systems（系统）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 theatre.
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, magenta, yellow and black are used as the primary colours. When you mix all the colours, the result is gray.
1. How many colour systems are mentioned in the passage?
A. Two B. Three C. Only one D. Four
2.If an artist wants to get green, he must _______ .
A . mix blue and yellow
B. mix blue and red
C. mix red and yellow
D. mix red, yellow and blue
3.Which of the following is NOT true?
A. Red, green and blue are used in television sets.
B. If scientists want to get white, they will mix red, yellow and blue.
C. Most artists think red, yellow and blue are the pure colours.
D. In the print industry, if you mix all the colours, you will get gray.
完形填空
A good dictionary is an important tool. It will tell you not only what a word means but also how it is used. A dictionary needs to be printed again about every ten years. Languages develop and a good dictionary must show these new changes.
A new English dictionary will only tell you ________ most people use the language today. It will not tell you what is right ________ wrong. It may tell you the right time to use a word. If only ________people use a word, a dictionary will ________ tell you this or not list it.
Every dictionary will tell you many interesting facts. If you type a word and the word is too long, look it up in your dictionary. All dictionaries show you ________ to break a word. And they also show you how a word ________.
Every dictionary, of course, tells you what a word means. But some words, like “get” or “take”, may have lots of meanings. In some dictionaries, the main meanings are often listed first. In ________ , the newest meanings are listed last. So before you use your dictionary, you should always ________the front part. This part explains how to use it.
Some dictionaries also show you where a word comes from. Do you know that the word “brand” (标记) comes from an old word? This old word means “to burn”. This is because hundreds of years ago people burned their names on tables or boats to show who ________ them. They also burned their own names on their farm animals ________ they would not be stolen.
Your dictionary also has a lot of other interesting facts in it. After you have learned to use a dictionary, it can become your best useful book.
1.A. how B. what C. why D. if
2.A. and B. or C. but D. not
3.A. a little B. many C. a few D. a lot of
4.A. neither B. nor C. both D. either
5.A. when B. where C. why D. which
6.A. speaks B. is spoke C. be spoken D. is spoken
7.A. another B. the other C. others D. other
8.A. see B. watch C. look D. read
9.A. builds B. makes C. built D. made
10.A. when B. in order to C. so that D. before
--- I believe this is the best movie of the year.
--- Well, ________. Anyway, the ending is Ok.
A. that’s a good idea.
B. that may not be a good idea.
C. I’m not sure if you’re right.
D. I think you’re right.
I hear they will build an intercity railway _______Jintan _________ the cites in Changjiang Delta (长江三角洲) in the following years.
A. connecting； to B. connected； with
C. connects； to D. connect； with
I want to see the doctor, but you _______ with me, which answer is incorrect?
A. need not to go B. don’t need to go
C. need not go D. don’t have to go
______ good news ! We have never heard _____ wonderful news .
A. What a ； such a B. How ； so
C. What ； such D. How ； so a
