电子技术专业英语期末考试试卷

《电子技术专业英语》课程期末考试
考试时间：100分钟，考核方式：笔试
Part ІVocabulary and Grammar
Directions：There are 20 incomplete sentences in this part.For each sentence there are four choices marked A,B,C and D.Choose the ONE answer that best completes the sentence.(20 points)
( )1. -Where is Frank now?
- He _______his bike in the yard.
A.fixes up
B. fixing up
C. is fixing up
D. fixed
( )2. -You’ve left the light on, Tracy.
-Oh, yes. _________ to turn it off right now.
A. I’d go
B. I’ve gone
C. I’ll go
D. I go
( )3.“The World Without Thieves” is a very moving film. I ____ it twice already.
A. will see
B. see
C. saw
D. have seen
( )4. The Oriental Pearl TV Tower ________ tens of thousands of visitors since l995.
A. attracted
B.attracts
C. has attracted
D.will attract
( )5. -Did you see the traffic accident yesterday?
-Yes. It happened when I past the museum.
A. walk
B. am walking
C. will walk
D. was walking
( )6. -Have you read this book?
-Yes．I____ it two weeks ago．
A．is reading B．have read C．will read D．read
( )7.- What are you doing ,Jim?
-I _________a beautiful horse.
A. draw
B. drew
C. am drawing
D. was drawing
( )8. They______ all their money, so they have to walk home now.
A. have spent
B. spend
C. spent
D. are spending
( )9. Jim is a student and ________in Town High School.
A. studies
B. studied
C. had studied
D.study
( )10.Sandy ________his old friend Tom when he was crossing the street.
A. had met
B. has met
C. met
D.meet
( )11.A FET has three terminals: a souce,a drain and a ________.
A.gate
B.substract
C.base
D.collector
( )12.Transistor may be roughly grouped into two major divisions: ________ and field-effect. A.single B.polar C.bipolar D.collector
( )13.In general,all material may be classified in three major catagories:conductors, ________and insulators.
A.conductivity
B.carbon
C.diamond
D.semiconductors
( )14.A diode is an electrical device allowing current to move through it in ________ direction(s) with far greater ease than in the other.
A one. B.two C.three D.four
( )15.A diode may be thought of as a kind of switch:” ________” when forward-biased. Aopen. B. on C.closed D. off
( )16.The BJT consists of ________region(s) of semiconductor material.
A one. B.two C.three D.four
( )17.VLSI is short form of “very large-scale________”.
A.integrating
B.integration
C.integrate
D.integrator
( )18.Bipolar transistors work as ________-controlled current regulators.
A. current
B.voltage
C.potential
D.drop
( )19.Tomorrow we________ go for an outing unless it rains.
A.will
B.shall
C.should
D.would
( )20.I ________ eighteen years old next year.
A.am going to
B.shall be
C.should be
D.would be
Part ІІCloze
Directions: Read the following text. Choose the best word or phrase for each numbered blank and mark A, B, C, or D.(10 points)
The United States is a confederation（联邦）of states. Each state has the (26) to make laws with regard to the state. (27) , based on public opinion, states can (28) policies regarding education, and they may (29) a state income tax; they also determine the speed (30) , housing codes, and the drinking age.
In most parts of the United States, you (31) be 21 years old to buy alcohol in a liquor (液体，
溶液)store, bar, (32) restaurant. In some states you may buy beer in a grocery （杂货，食品）store. If a store sells alcohol to a minor, the (33) of the store is usually (34) a large sum of money. (35) , many areas have an open-container law, (36) means that people may not drink alcohol on the street or in a car. Anyone (37) with an open container of alcohol may be arrested.
(38) , with all of these laws, the (39) of alcohol is a serious (40) in the United States and Canada. Drinking on college campuses, (41) there are many underage drinkers has (42) greatly. In fact, alcohol sales have gone up (43) the legal drinking age was (44) from 18 to 21. Some people believe that if there were no legal drinking age, (45) in some other countries, North American youth would drink less.
( )21.A privilege B advantage C right D tradition
( )22.A As a result B For example C In other words D In this case
( )23.A demand B disagree C discuss D determine
( )24.A collect B issue C demand D implement
( )25.A limit B control C stop D regulation
( )26.A can B shall C will D must
( )27.A and B or C also D not
( )28.A clerk B salesperson C owner D host
( )29.A fined B charged C punished D suffered
( )30.A In addition B In fact C In reality D In general
( )31.A that B this C it D which
( )32.A exposed B suspected C caught D detected
( )33. A nevertheless B Anyway C Moreover D Therefore
( )34.A application B consumption C expenditure D usage
( )35.A condition B crisis C question D problem
( )36.A though B as C where D which
( )37.A raised B increased C peaked D climaxed
( )38.D climaxed B since C before D after
( )39.A shifted B upgraded C uplifted D changed
( )40.A same B for C as D like
Part ШReading Comprehension
Directions: Read the following text. Answer the questions on each text by choosing A,B,C or D. (10 points)
The ostrich（鸵鸟）, the largest bird in the world at present, lives in the drier regions of Africa outside the actual deserts. Because of its very long, powerful legs and the floating effect of its extended wings, it is able to run at great speed over considerable distances.
The female（雌性的）ostrich normally produces about twenty eggs every rainy season. When the female ostrich begins to lay her eggs, however, she does not begin in her own nest（巢、窝）.Instead she goes off in search of the nests of neighboring females and lays two or three eggs in each of them. By the time she has laid eight or nine eggs, she returns and lays the rest in her own nest.
Because of the size of the eggs, the female ostrich cannot lay more than one every two days, so it takes her three weeks to finish laying in her own nest. During that period, she spends a lot of time away from her nest looking for food. And while she is off her nest, other females visit it to
lay their eggs amongst hers. By the time she is ready to sit on the eggs to hatch（孵化）them, there could be up to thirty eggs in her nest, over half of which are not her own.
The female ostrich can comfortably cover only about twenty eggs when she is sitting on the nest so before settling down she pushes the surplus（剩余，过剩的）ten or so eggs out of the nest. The rejected eggs, however, never include any of her own. Each female is remarkably consistent in the size and shape of the eggs she produces, so it is not difficult for her to distinguish her own from those of strangers.
Of all the eggs laid by a colony of （群体）ostriches, only a very small number hatch into young birds. There are times when nests are left unprotected, for there are too few males to sit on all the nests at night. Thus there are ample（充足的）opportunities for their natural enemies to raid （袭击）the nests and eat the eggs. In fact, nearly 80% of the nests are destroyed. But even if a particular female’s nest suffers this fa te, there is a good chance that one or two of her eggs will be hatched in the nest of one of her neighbors.
56.We learn from the text that an ostrich can go a long distance at high speed as ______.
A.it is a special kind of bird
B.it lives in large desert areas
C.it has special wings and legs
D.it is the largest bird in the world
57.Normally, in every rainy season, the female ostrich produces about ______.
A.12 eggs in her nest
B.18 eggs in her nest
C.20 eggs in her nest
D.30 eggs in her nest
58.The female ostrich would push some of the eggs out of her nest because ______.
A.she can only hatch her own eggs
B.those eggs are unlikely to be hatched
C.those eggs are to be hatched by others
D.she can only hatch a limited number of eggs
59.The female ostrich identifies her own eggs by their size and ______.
A.color
B.number
C.shape
D.weight
60.The female ostrich lays her eggs in her neighbors' nests most probably because ______.
A.her nest is not big enough
B.she cannot protect all her eggs
C.she cannot tolerate all her eggs
D.her nest is not comfortable enough
Part IV Translation
Section A
Directions:There are 10 phases in this part.You are to translate the phases into Chinese or vice verse,and write them down in the blank.(20 points)
1.threshold voltage( ) 6.运算放大器( )
2.Schottky diode( ) 7.正向偏置( )
3.differential amplifier( ) 8.电阻系数( )
4.unity-gain buffer( ) 9.电容( )
5.negative feedback( ) 10.电感( )
Section B
Directions:There are 2 passages in this part.You are to translate the passages into Chinese or vice verse,and write them down in the blank.(20 points)
Passage 1
The resistance of an electrical conductor depends on 4 factors, these being:
(a) The length of the conductor. Resistance, R, is directly proportional to length, l, of a conductor, i.e. R∝l.
(b) The cross-sectional area of the conductor. Resistance, R, is inversely proportional to cross-sectional area, a, of a conductor, i.e. R∝1/a.
(c) The type of material.
(d) The temperature of the material.
Passage 2
The only functional difference between a p-n-p transistor and an n-p-n transistor is the proper biasing (polarity) of the junctions when operating. For any given state of operation, the current directions and voltage polarities for each type of transistor are exactly opposite each other.
Part V Writing
Directions:For this part,you should write a short essay entitled How to Learn Electronic ESP Well.You should write at least 100 words following the outline given below.(20 points)
1.电子专业英语学习的重要性
2.电子专业英语学习的内容
3.如何学好专业英语
How to Learn Electronic ESP Well。